Water Pollutants Discharge Permit Systems of the United States and China: A Comparison Using Referential Method

Using a referential method, a comparative study is carried out on the USA Clean Water Act (CWA) and the PRC Water Pollution Prevention and Control Law (WPPCL). Both laws employ a discharge permit system to achieve their respective environmental goals. The focus of the study is on the comparison of the CWA/National Pollutants Discharge Elimination System and the WPPCL/Water Pollution Discharge Permit system. It is first pointed out that the comparison of environmental laws is not a “better-law comparison”. Instead, an environmental law in one country may be used as reference to examine how an environmental law in another country can be developed and implemented within the respective legal framework. Comparison between the USA CWA/NPDES and the PRC WPPCL/WPDP is made from the perspec-tives of law objectives, implementation procedures and enforcement actions. Several recommendations are then made to better design and implement the permit system in China, with respect to ethical premise, concrete law, discharge standards and enforcement.

DOI: 10.4236/blr.2020.112035 582 Beijing Law Review cluding but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, or vessel or other floating craft, from which pollutants are or may be discharged. 14 Factories and sewage treatment plants are two common types of point sources. 15 The CWA established technology-based effluent standards for specific industry categories and water quality standards for all contaminants in surface waters. 16 In order to abide by the limitations set by the CWA, industries should treat wastewater prior to disposal in a water body (Vicario & Ohliger, 2015). Since its implementation, "the NPDES permitting program has been the 'centerpiece' of the CWA and the primary method for enforcing the effluent and water quality standards established by the Environmental Protection Agency and state governments." The NPDES is the CWA's "most effective weapon against pollution," and therefore plays a significant role in water pollution litigation (Mims, 2015).
The US permit practice of the past four decades provides China with an important reference. We are thus motivated to compare the US CWA/NPDES and China's WPPCL/WPDP to identify the major pillars of the permit system and to examine the feasibility of an effective permit system in China's legal framework.

Research Methodology: Referential Approach to Environmental Law Comparison
Comparative law studies the differences and similarities among the different legal systems. A number of disciplines have developed, including comparative constitutional, administrative, civil, commercial, and criminal laws. Also, many studies on environmental law comparison have been published (Griggs, Peck, & Xue, 2009). While this is now an important part of comparative law studies, well-suited methods are yet to be developed. Zweigert and Koetz suggested that "the basic methodological principle of all comparative law is that of functionality" (Zweigert & Koetz, 1998). Under this theory, the starting-point of a comparative analysis is not the rules themselves, but the problems they help to solve. So this approach considers that institutions are comparable if they fulfill similar functions in different legal systems. It places the emphasis on the comparison of law in practice (Reimann & Zimmermann, 2006). In the end, comparative law becomes a "better-law comparison"-the better of several laws is that which fulfills its function better than the others. Functional approach is today a leading theory of comparative law.
The functional approach has been for years the leading strategy for law comparison, but it is not well equipped for comparison of complex laws, for which functionality is no longer the largest common denominator and the prerequisites for the functional method to work often do not exist. In this study, I attempt to use a referential approach to comparison of environmental laws. While the func-14 33 U.S.C. §1362(14).
tional approach uses law functionality to define law comparability, the referential approach does not place its emphasis on this "norm". Instead, it analyzes the histories of a developed and a developing law and the political and social-economic conditions under which the laws are implemented and to identify the verified strengths and weaknesses of the respective laws, in order to improve the developing law. Junker (2014) provided an in-depth examination of the history of comparative law. He pointed out that "too often, foundational questions such as why one compares and whether comparative law goals are really achievable are ignored. Instead, we jump ahead immediately into the method of how one compares". Junker observed "that while functionalism has come under criticism, a single, new ship sailing forward upon which to fly the flag of comparativism has yet to emerge. The critical legal studies movement criticized functionalism heavily, but has not put forward an agreed-upon replacement".
The functional method, widely used for comparative law studies, may not be well-suited for environmental law comparison because the functionality of the environmental law is subject to the political, social-economic-cultural and technological conditions of the respective countries. The law impacts normally on the environment as a whole, not only on individual cases, but the impacts can only be evaluated over a long period of time. Thus, the functional approach does not qualify for environmental law comparison from the space and time dimension. A "referential approach" is therefore proposed here.

Different Evolution Patterns of Permit Systems in the USA and China
Both US CWA and China's water pollution law have chosen effluents discharge permit as the leading pollution control instrument to limit the water pollutants discharge through administrative grant, which is pursuant to the technology-based effluent limitation of end-of-pipe and the quality standard of receiving water. The legal philosophy of permit is the discharge of pollutants to water bodies of respective countries shall not be a right. The public resources can only be used for waste disposal when a permit has been obtained and the effluent limitations written by the permit are to be complied. 17 However, the two countries own their different legal patterns with regard to sewage permit.

Legal Pattern of US Permit
The most significant earlier water pollution control law in the USA was the 1948 FWPCA 18 which depended on the states to establish their own water quality standards. In that Act, the free use of waters was presumed.  (Su et al., 2014), while a national-wide regulation has yet been developed by the State Council, due to lack of systematic and national-wide Effluent Guidelines and the respective regulatory requirements, including the best available technology (BAT) system (Xie, 2018). US EPA identifies the best available technology that is economically achievable for that industry and sets regulatory requirements based on the performance of that technology, which represents a "spare no expense" doctrine and precautionary principle, and prescribes the acquisition of the best state of the art technology available, without regard for traditional cost-benefit analysis (Sinden. 2014). The Effluent Guidelines do not require facilities to install the particular technology identified by EPA; however, the regulations do require facilities to achieve the regulatory standards which were developed based on a particular model technology. 23 There are four levels of control technology under the NPDES, from least to most stringent, they are: Best practicable control technology currently available (BPT), Best available control technology economically achievable (BAT), Best conventional pollutant control technology (BCT), New Source Performance Standards (NSPS) reflecting the most stringent controls attainable through the application of the best available demonstrated control technology for all pollutants (i.e., conventional, non-conventional, and priority pollutants). BPT is the minimum standard for existing point sources of conventional, toxic, or non-conventional pollutants. If local water quality standards require more treatment, then the permitting authority may require permit applicants to install BCT (for conventional pollutants) or BAT (for toxic or non-conventional pollutants).

The Legal Pattern of PRC WPPCL/WPDP
When the CWA was enacted in 1972, an environmental legal framework was non-existent in China. The WPPCL is a pioneering environmental law in the legislation history of the PRC. It was enacted in 1984, five years ahead of the Environmental Protection Law (EPL). For the implementation of the WPPCL, the underlining legal mechanisms of the related regulations have evolved considerably over time from "concentration control" and "end of pipe control" to "total emission control" (TEC) and "pollution prevention", from administrative "region-based management" to "river-basin-based management", from "point source control" to "all sources control" and from "single administrative mandatory orders" to "economic and legal tools".
Currently, TEC is the leading strategy to control pollution and regulated by Art. 18 of WPPCL of 1996 and its successors. The total permissible emission of certain pollutant is determined on the national level, and the central government allocates the emission targets to provincial governments, then to city-country level governments, in the end, to industries, by use of a permitted pollutants load allocation. The TEC strategy has been proved to be useful to allow the government to make macroscopic adjustment to meet certain target, for example, the reduction of CO 2 emission through promoting energy efficiency or closure of emission producers.
The role of the WPDP is on the one hand similar to the NPDES of the USA, a legal institution which creates technological requirements for pipe-end discharge, and on the other hand, is used as an instrument to support the TEC strategy. In the USA, the final elimination goal of water pollutants discharge depends on the success of the permit system, which relies heavily on TBS, the WQS and TMDL strategies are then initiated when the former fails. In contrast, China relies on TEC, because it is more easily achieved through governmental actions such as administrative order to close certain industries.

The USA Technology Based Standard and Water Quality Standard
The basic strategy of the CWA/NPDES is to prevent water pollution through technological innovation and advancement. TBSs are established to limit the discharges from point sources and demand wastewater treatment before discharged. The TBSs are determined based on a number of factors, including the available technology of different industries, the type of pollutants, the amount of pollutant production, the techniques for wastewater treatment etc. The TBSs require the EPA to determine what pollution reduction controls are available to best meet the goals, and require the industry to select the technology that best satisfies the controls. The EPA has established more than 50 sets of standards for a spectrum of industries (McGaffey, 2003). The TBSs are then incorporated into the NPDES as criteria for permits issuance of specific facilities. With that, the NPDES sets concrete and measurable limits on the amount of pollutants discharged.
The technology-based regulation is even-handed in that all members of the same industry are treated equally. Because the TBSs set minimal levels of control with which all states must comply, these standards take away incentives for industry to relocate in states with less stringent standards (Glicksman, 2009). Also, as the standards are incorporated into the NPDES, the permit compliance and enforcement are simplified: the permittee knows what is expected and regulators what is required of the various sources. The determination of violations becomes relatively simple, because each permittee must periodically file "discharge monitoring report" which allows a comparison of the discharger's actual performance with the permit requirements.
While TBS limits waste water discharge from point sources, WQS focuses on the quality of the receiving water. The considerations taken in WQS include 1) designations of the water beneficial uses; 2) water quality criteria necessary to protect the beneficial uses; and 3) anti-degradation policies. WQS is a regulatory strategy because compliance with TBS does not guarantee water quality. For waters that do not meet WQS after the application of TBS, the states are to establish TMDL and allocate the pollutant loading among the responsible sources (Andreen, 2007). WQS allows the states to 1) identify waters which fail to meet WQS despite the application of TBS; 2) target these waters by taking into account of the severity of the pollution; and 3) determine the TMDLs so that these waters meet the applicable WQS.
If the TMDL sets much stricter requirements than the TBS on the point sources, then the states must work to reduce pollution sources so that the WQS can be met, as the CWA Section 303 rules the NPDES permits must include more stringent limitations necessary to meet the WQS. Accordingly, when the TMDL is established, dischargers must comply with the more stringent permit limitations to meet the waste load allocation under the TMDL.

The PRC Effluent Discharge Standard
The Environmental Quality Standard for Surface Water was first published in 1983 and revised in 1988, 1999 and 2001. The quality of the water bodies was divided into five grades (Grade I has the best and V the worst water quality). For Y. Yuan, Y. S. Li DOI: 10.4236/blr.2020.112035 each grade, a WQS is specified using 24 basic pollutant concentrations and 85 other drinking-water specific items. To design the discharge standards, wastewaters are first divided into 8 major categories, including industrial, agricultural, domestic, transport, service, water-treatment, surface-runoff, and the remainder wastewaters. For each category, sub-categories are defined and for each sub-category, the MEP defines the discharge standards for a variety of pollutants. 24 In practice, the discharge standards are commonly established by the MEP and the administrative authority responsible for given industries. These standards are made in accordance with the national water quality requirement and take into consideration the national economic and technical conditions, according to Article 13 of WPPCL. China's provincial governments also have the power to make their own effluent discharge standards in absence of the corresponding national standards or to make stricter standards than the national ones. Whether a discharger has complied with the standards depends on the statistics of its discharge outlet or of the outlet of processing workshop. 26 In practice, local standards play a leading role in discharge permit issuance, and prevail over the national standards. If local and national standards are in conflict, the local standards often apply.

Comparing USA Water-Quality-Based Standard with China's Total Effluent Control
The 1988 "Interim Regulations for WPDP Management" acclaimed TEC to be the core of the permit program. In theory, permit holders should not only comply with the requirement of effluent standards but also satisfy the allocated responsibilities of effluent reduction based on the TEC strategy.
China's TEC is similarly designed as the WQS being exercised in the USA.
Both of them provide the "pollutants reduction load allocation mechanism" through which the amount of pollution entering the water bodies is controlled. China's TEC strategy aims at establishing the total allowed discharge amount of pollutants within a limited region or watershed and during a limited period, taking into consideration the water quality goal and pollution assimilating capacity of the water body. It is finalized by the allocation of pollutants reduction loads among dischargers. They differ with each other in following four aspects: 1) Preconditions for TEC: In the USA, only when the water body is identified as impaired, can TMDL be initiated by the states. It is not a nationwide TEC plan, but a corrective approach to restore the quality of some waters. TEC is thus a strategy far distant from a comprehensive water quality protection, because controlling only four pollutants is insufficient for protection of a water body, along the uncertainty inherent in any the total pollutants calculation.
3) Implementation of TEC: The USA TMDL is a pollution "budget" for a water body or watershed that establishes the pollutant reduction needed from each pollutant source to meet WQSs. 30 Therefore, each TMDL plan expresses the relationship between the necessary reduction of the pollutant of concern and the attainment of the WQS. To develop a TMDL plan, states 1) select the pollutant; 2) estimate the water body's assimilative capacity; 3) define all sources; 4) make a predictive analysis and determine the total allowable pollution load; and 5) allocate the allowable pollution among the different pollution sources so that WQS is achieved. 31 TMDL takes into consideration the seasonal variation of a water body and accounts for the different requirements for the dry and wet seasons. dies, but by political intent and public concern. 32 Second, the TEC targets are determined every five years. In such a long period, pollutants accumulation, pollution sources, water purification capacity and water mass vary significantly and affect the adequacy of the TEC target. Third, the permitted amount of discharge is first allocated among provinces, then among city-county level regions, and finally among the discharge entities, in the form of "total allowed discharge concentration", or "total allowed discharge speed" or "total allowed discharge amount of unit product" (Song, 2000). Then, the permit holders are requested to comply with the minimum level of effluent standard requirement and the pollutants reduction requirement. There is however no legal document for explanation of their relationship. Forth, unlike TMDL, China currently uses a total yearly load even five year load control. 4) Public participation into TEC: Once initiated, the TMDL will be integrated into the USA CWA/NPDES, public has access to the reports about the implementation of it, such as Chesapeake Bay TMDL case (Copeland, 2012). In comparison, China's WPPCL regulates to react to the local governments and dischargers that did not meet the load reduction goals by "publishing their names" on the web of MEP. The named entities must take corrective actions under MEP's supervision. This is another way of public participation, not at the same time with implementation but after the failure of it.
The functioning of the TEC strategy is as illustrated in Figure 1. The MEP establishes the WQSs for waters to be achieved by TEC through discharge allocation and discharge standards. But according to the WPPCL, technological and This is a complex model with considerable potential of failure, because the total emission of pollutants becomes uncontrollable if the discharge standards are inadequate and violated. Although China has already published a large set of discharge standards, explicit information as to how they are designed is not publically available. The risk of the TEC strategy can be illustrated using a simple analysis. As Chapra (2008) explains (Chapra, 2008) the accumulation for pollutant (e.g. COD) in a water body is given by: where P equals the discharged wastewater times the concentration of that water Cd, and A equals the waterbody mass M times the pollution concentration of the waterbody C. C is steady if discharge equals purification, P = R. If P is larger than R, then C increases and water quality deteriorates. Even for this simple case, using C (concentration-based water quality standard) to determine Cd (concentration-based discharge standard) is problematic if R is unknown. C also depends on M (or the water pollution carrying capacity). In times of low water levels, C is poorer for the same discharge. Thus, during low waters, C can be large and pollution disasters more likely.
While the application of TMDL strategy requires sophisticated water management capability, as the major setbacks of its implementation in the USA and decades of legal battles and controversies suggest (May, 2004(May, , 2005, the application of the TEC strategy is even more difficult. It is extremely difficult to estimate the required total emission on national scales. The pollutants purification capacity (R), the pollutants carrying capacity (M) and the demand for discharge of polluted water (P) must be known on basin scales. While R involves complex bio-geochemical processes and M, hydro-climatological processes, P involves social-economic activities, making the estimate of TEC a formidable task. The TEC strategy is particularly risky if the permit system is not well monitored and enforced. If the monitoring is limited to the quality of discharged water, and not the daily load, then the TEC target is vulnerable. More recently, China has invested heavily in building up the water quality monitoring network and the MEP has commissioned the "Major Science and Technology Program for Water Pollution Control and Treatment" 33 , so that implementing a TMDL within the WPDP may be possible in the near future.

Permit Compliance and Legal Enforcement in the USA and in China
In the USA and China, the permit compliance and legal enforcement relies primarily on the administrative action. That is proved to be the most quick and ef-

Compliance and Enforcement of Permit in the CWA
The CWA is supported by a compliance/enforcement scheme within the general framework of the environmental law enforcement. The concept of "environmental justice" is a widely accepted premise and the moral basis of environmental law enforcement in the USA. It has also been one of the EPA's top priorities to integrate environmental justice into compliance/enforcement programs and program-implementations (Cory et al., 2012).
The USA EPA employs an array of tools to achieve law compliance, including monitoring, investigation, administrative and judicial actions, as well as compliance assistance and incentives. These tools balance compliance through provision of guidance/assistance and violation correction by imposition of penalties and legal actions. In practice, the EPA takes a pragmatic approach with its compliance/enforcement programs relying more on pollution control technologies and focusing judicial actions on cases that are expected to result in large environmental benefits. The EPA and the delegated states are empowered by the CWA to take enforcement actions (Earnhart & Glicksman, 2006). The CWA Section 309 34 rules that the primary enforcement options for the EPA include issuing administrative compliance orders, assessing administrative penalties, referring civil cases for penalties and criminal cases for prosecution. 35 In practice, the USA EPA takes tough civil and criminal enforcement actions against violators only as the last option. Most CWA/NPDES violations are dealt with and settled through Administrative Enforcement Actions. An administrative enforcement action either 1) requires violator to take action to comply, 2) revokes permit, 3) imposes penalties or 4) supplements environment projects. Most administrative enforcement actions lead to either consent agreements or administrative orders.
The most frequent enforcement action is administrative penalty. In 2013, the EPA processed 1440 final administrative penalty orders and referred 138 civil cases to the USA DOJ; it was reported the assessment of nearly $1.15 billion in civil penalties and $4.5 billion in combined criminal fines, restitution, and court-ordered environmental projects (Esworthy, 2014). However, the CWA compliance/enforcement scheme has also shown deficiencies. At the present, about 50% of the NPDES (small-individual) permit holders violate the permit requirements. The overall effectiveness of the compliance/enforcement strategy of the EPA is now of considerable concern.
Environment law enforcement in the USA operates within a complex frame- and local governments, etc. Figure 2 depicts the USA environmental law compliance/enforcement framework and the key players. In case of the CWA, the states assume primary enforcement responsibilities and conduct a large proportion of inspections and enforcement actions. Citizens have standings to raise a lawsuit against government that has neglect of duty or polluters. They identify and report violations, comment on enforcement cases and initiate enforcement proceedings against violations; bring actions against the federal or state EPA for non-diligence. Citizens can lodge online complaints, and assist in locating alleged environmental criminal fugitives. Civil cases are a large component of the enforcement actions, second only to administrative cases. They are lawsuits filed in court against permit holders for alleged violation of permit requirements or administrative orders. As with administrative cases, most civil cases lead to a consent decree. The CWA authorizes criminal enforcement actions against individuals or entities who negligently or deliberately violate the statute. The criminal enforcement scheme includes imprisonment, monetary penalties, or both.
Citizen enforcement is indispensable to the CWA enforcement. Citizens are empowered to act as "Private Attorney Generals" to enforce compliance (Morrison, 2005). In particular, the CWA Section 505 states that any person has the right to commence a civil action on his own behalf against either 1) any person who violates an effluent standard or limitation, or 2) the EPA for failure to perform any act or duty…which is not discretionary. 36 The first issue concerning citizen action is the citizen legal standing. To have an individual standing, citizens must show that 1) they have suffered an injury in fact that is concrete and particularized, actual and imminent; 2) the injury is traceable to the defendant's challenge action; and 3) it is likely that the injury will be redressed by a favorable court decision. Plaintiffs need not establish the causal connection with absolute scientific rigor. Citizen claimants need not show prudential standing. Citizens are also empowered to act against the EPA if it fails to perform nondiscretionary act or duty. Citizen suits are also important to develop new regulatory programs and to improve existing regulatory programs.

Compliance Instrument and Legal Enforcement Mechanism of WPPCL of China
According to Ma & Zhou (2012), because of the large discrepancy between the water quality standard and the low water pollutants discharge standard, the industries only need to pay a low fee for wastewater treatment to achieve an eco- To combat the problem, the government took highly publicized actions. The well known example is the "Taihu Zero Action" in 1999 (Sun, 2003). The State Council jointly with the relevant provinces launched a massive clean-water campaign in the 1990s with an ambitious goal of "Taihu Clean Water" by 2000.
The campaign reached its climax in 1998. The action was claimed to be a major success, i.e. by 0:00 on 1 Jan 1999 all key sources of waste water discharged to Taihu, comprising 1035 enterprises, had met the standard. However, the water quality of Taihu continued to deteriorate. In the 1990s, the wastewater discharges into Taihu was estimated to be 860 Mt per year. By 2000, it was a massive 5.33 Gt (Qin, 2008). reported that less than 1% of the environmental disputes could be dealt through the court system, about 0.4% of all legal cases in that province . The obstacles for the lack of court activities are 1) complex requirements for a civil public interests litigation; 2) difficulty in collecting evidence; 3) high cost of expert testimony; and 4) high probability of losing.
The enforcement actions in China appear to be weak to protect citizens from environmental harm. According to the law, an effluent discharger must have a permit. But pollution discharge without permit, non-compliance with permit requirements and non-renewal of expired permit are so widely spread that local governments often ignore them. Most polluters prefer to pay the small penalty rather than to stop illegal discharges. For example, it was exposed in 2015 that the Huaxing Pharmaceutical Factory directly discharged waste gases and water. This state-owned company ended up with only having to pay the administrative penalties.
China's legislators have struggled for a long time to define whether NGOs have standing to raise environmental lawsuit. The WPPCL side stepped defining the standing, as its Article 99 regulates that local EPBs and social organizations could "support" pollution injurers to raise a lawsuit, and the legal service institutions and lawyers are "encouraged" to provide "legal assistance" for the persons who are suffering from water pollution. The first clarification can be seen in Article 55 of the Civil Procedural Law of PRC (2012), which stipulates that activities leading to environmental pollution and harm of public interests could be prosecuted by authorized agencies or related organizations. The interpretation for "authorized agencies or related organizations" is up to court's discretion. In 2013, the All-China Environment Federation has brought as plaintiff eight litigations, but all were refused to be heard by the courts with the reason of no standing (Zhao, 2014). Until 2015, the EPL clearly allows an NGO to file litigation under the following conditions: 1) it is registered at a municipal level or higher level government; 2) it is engaged in activities for environmental protection for 5 years or more and has no law violation records; and 3) it does not seek economic benefits from litigation. 47 In 2015, the All-China Environment Federation raised two civil litigations, both accepted for hearing. But in the Environmental Protection Federation of Taizhou vs. Chang Long Chemical Engineer Company case (2014, Middle-Level Court of Taizhou), the defendant questioned the plaintiff's standing, because it was founded for only two years, according to the draft of EPL, only NGO with more than 5 years experiences could have standing. Court recognized the Environmental Protection Federation of Taizhou as a qualified plaintiff, according to the Civil Procedural Law, and decided a penalty of 160 million CNY on the defendant for water environmental compensation and reparation. The EPL 2015 has set more stringent requirements for NGOs than Civil Procedural Law 2012.
Governmental enforcement action is the primary mechanism for WPPCL/WPDP mostly in the form of administrative penalties including: Temporary closure and safety checks of the particular polluting facility; Fines on the polluters; Temporary demotion or transfer of the responsible administrators; Punishment of EPB officers.
The characteristics of this type of enforcement are clearly seen in the Nov. 2005 severe water pollution case of the Songhua River. Only in rare cases, the criminal law is invoked and imprisonment of polluters followed. The framework and organizational setting for environmental law enforcement in China, including the WPPCL, are illustrated in Figure 3.

Summary and Recommendations
Using the referential method, we carried out a comparative study on the USA CWA and the PRC WPPCL. Both laws are designed in response to water pollution problems in the respective countries, and both employ a discharge permit system as a vehicle to achieve the environmental management goals. However, while the CWA/NPDES has enjoyed much success in improving the water quality of the USA, the WPPCL/WPDP has not been able to curb the trend of increased water pollution in China. Then, what are the reasons?
Our study shows that substantial differences exist between the USA CWA/NPDES and the PRC WPPCL/WPDP. The results of the comparison can be summary from the following perspectives: 1) Objectives of the laws: the CWA aims to restore and maintain the chemical, physical, and biological integrity of the waters, while the WPPCL aims to balance economic development and environmental protection. The objective of the CWA places water integrity high on the national agenda and reflects the ethical premise of clean water. In contrast, the WPPCL retains economic development as the highest national agenda and water quality protection secondary. As a result, although the WPPCL provides a legal basis for water quality protection in China, it at the same time provides an implicit justification of economic development at the expense of water quality. The water pollution levels China experienced in recent years demonstrate that the destructive powers of the economy to the water integrity are much beyond the jurisdiction of the WPPCL.
2) Roles of the laws: The roles the laws play in the two countries also differ. While the CWA/NPDES plays a central role in the USA, the WPPCL/WPDP is in general supportive. The most noticeable results in water pollution control achieved in China so far cannot be attributed to the law but to the political decisions of the government and the direct investment by the government to develop the water treatment facilities. These measures do not necessarily make use of the law. Changes in government policies can achieve quick results, but they are often ad-hoc and inconsistent.
3) Jurisdiction: The CWA has a broad scope of jurisdiction, i.e., it extensively defines all waters of the USA are protected by the law, while the WPPCL is more specific and dedicated primarily to drinking water safety and then to industrial and municipal wastewater control. The legislation procedures in the USA and China are also very different. The CWA is a detailed law, further concretized via the NPDES to be directly executable and enforceable. By doing so, the NPDES becomes an integral part of the law. In contrast, the WPPCL only stipulates the principles and its implementation are realized via the regulations of the State Council, which until now are still in preparation. The legislation and implementation are thus not an integral part and consequently, although the WPPCL was amended in 2008, it remains to be properly implemented. The legislation-implementation process in China is further complicated, because the WPPCL can also be interpreted by the provincial legislative bodies, and the provincial governments need to respond to these interpretations and develop the corresponding regulations for implementation. So far, the WPDP is implemented based on the regulations of local governments. This process separates the law from implementation and generates a large degree of variations. The outcome in the reality becomes very different from what the law is supposed to achieve. 4) Implementation: On the technical level, the NPDES employs a dual-standard system. TBS has proved to be very successful, but WQS, despite its potential, has not produced convincing results. Interestingly, China's TEC strategy is more similar to the WQS approach, and the WPDP becomes merely a method for discharge allocation. The TEC strategy has large risks of failure if the WPDP is not checked by maximum loading. TBSs also exist in China, but they give permissive conditions for water pollutant discharge. The administrative fines are mostly much lower than the cost needed for WPDP compliance. This practically encourages permit holders to discharge pollutants without compliance. There have been very few cases of criminal enforcement actions against direct polluters in China, but quite a few cases against local EPB's officers for non-diligence of duty.
Several recommendations can be to better design and implement the WPPCL/WPDP in China: 48 1) Ethical Premise: China should promote its traditional ethical premise of "nature-human harmony" and the new ethical premise that "water must be clean". The economic factor should no longer serve as the dominant consideration for the social welfare and people's happiness. This ethical premise is now increasingly realized in China and the request of the people for a better environment is becoming stronger. Thus, the objective of the WPPCL should no longer be the "balance" between economic development and environment protection, but the protection of water quality. Only by doing so, environmental protection can be placed among the highest priorities in the national agenda.
2) Concrete Law: The WPPCL only stipulates the principles while its implementation is done through regulations at various administrative levels. The disjunction between the law and practice has the unusual consequence, that after eight years of its enactment (in 2008), the WPPCL is still waiting for regulations for its full implementation. Given China's reality, embedded in the regulations are the priorities of the governments, which are not always consistent with the original purpose of the law. It is thus desirable for the NPC to legislate concrete environmental laws that are directly implementable and are subject only to supplementary regulations, rather than heavy reliance on regulations.
3) Discharge Standards: The main function of China's WPDP is to allocate the pollution discharge load to enterprises to serve the TEC strategy which has inherent risks. The dual-standard system of the USA functions better. In particular, the TBS has proven to be very successful, and the TMDL technique is necessary for the WQS to work, although the implementation of TMDL encountered considerable difficulties. China's WPPCL/WDPD should adopt in future the dual standard approach. The law should authorize the MEP to establish TBS and to introduce TMDL to secure the effective implementation of WQS. China's environmental legal framework has been evolving at a fast pace in the past few years. The authors have observed that some of the recommendations made in this thesis are fully consistent with the new developments in China. alleged polluters and duty-negligent administrative bodies. Finally, the law should promote the culture of cooperative responsibility and allow for incentives for the regulated community to comply with the law.

Funding
This paper is supported by the "Fundamental Research Funds for the Central Universities, Hohai University", as part of the Project "Research on the Rights and Responsibilities of Governments, Enterprises and citizens in the New Environmental Legal System-from the Perspective of the Sewage Permit System".