Opinion for the court filed by Circuit Judge TAMM.
TAMM, Circuit Judge:
Though Rock Creek flows placidly through the Maryland countryside and the heart of Washington, D. C., apprehension about future quality of the creek’s water has erupted into a dispute between these two jurisdictions. The District of Columbia (District) sought injunctive and declaratory relief against the United States Environmental Protection Agency (EPA or Agency), the state of Maryland, and their respective officials to revoke the operating permit of an advanced wastewater treatment plant that discharges effluent into the creek. The United States District Court for the District of Columbia denied relief, finding the District had not been harmed by operation of the plant. We agree and in addition conclude that Congress intended limited federal court review of state National Pollution Discharge Elimination System (NPDES) permits. Accordingly, we remand the case to the district court with instructions that it dismiss certain counts of the District’s complaint, and we otherwise affirm.
I. BACKGROUND
A.
Federal Water Pollution Control
One scar on America’s record of technological and economic progress has been the pollution of its air and water. After several ineffective legislative responses to the pollution problem,
Congress passed the Water Pollution Control Act Amendments of 1972 (Clean Water Act), Pub.L.No. 92-500, 86 Stat. 816 (current version at 33 U.S.C. §§ 1251-1376 (1976 & Supp. I 1977)), “to restore and maintain the chemical, physical, and biological integrity of the Nation’s waters.” H.R.Rep.No. 911, 92d Cong., 2d Sess. 71 (1972),
reprinted in
1 Cong.Research Serv., A Legislative History of the Water Pollution Control Act Amendments of 1972, at 758 (1973) [hereinafter cited as Legislative History], Congress established a goal of “eliminat[ing] the discharge of pollutants into the waters of the United States by 1985 and . . . achievpng] water quality which provides for the protection and propagation of fish, shellfish, and wildlife and provides for recreation in and on the water to be achieved by 1981.”
Id.
To reach this goal, Congress has established strict limitations on the discharge of
effluents into the nation s waterways. 33 U.S.C. §§ 1311-1328.
Congress has created the National Pollution Discharge Elimination System (NPDES) to enforce the limitations. Anyone wishing to discharge effluent into a waterway needs an NPDES permit, which limits the amount and types of pollutants which may be discharged into an affected waterway.
Congress also has enlisted the states in the battle against water pollution. Recognizing “the primary responsibilities and rights of States to prevent, reduce, and eliminate pollution,”
id.
§ 1251(b), Congress has let states assume the regulatory duties. A state may apply to the EPA to take responsibility for licensing under the NPDES all discharges into navigable waters
within its boundaries. If the state program meets certain requirements,
see id.
§ 1342(b); 40 C.F.R. § 123.1-.62 (1979),
the Agency approves the program and suspends its own NPDES licensing program in that state. 33 U.S.C. § 1342(c). The Agency continues to receive copies of applications for NPDES permits and retains the power to veto state NPDES permits.
Id.
§ 1342(d). It may waive this notice requirement, however,
id.
§ 1342(e), and the responsibility for supervising state programs,
id.
§ 1342(d)(3). Congress in this scheme thus placed on the states the burden of administering and approving NPDES applications.
B.
Maryland NPDES Permit Program
Maryland has established its own water quality control program under its Department of Natural Resources and Water Resources Administration to administer requests for NPDES permits. The Regional Administrator of the EPA approved this program in September 1975. In their Memorandum of Agreement, state officials and the Regional Administrator concluded that the state would assume primary responsibility for the NPDES program, and the “Regional Administrator’s role [would] be one primarily of issuing guidance, providing financial and technical assistance, and reviewing applications and other program accomplishments (to the extent possible) as required or deemed desirable by the parties involved.” Memorandum of Agreement Regarding the NPDES Permit Program Between Maryland Department of Natural Resources and the Environmental Protection Agency, Region III at 2,
reprinted in
Joint Appendix (J.A.) at 36, 37.
Maryland and the EPA also has established a joint review program for certain NPDES applications. Under this procedure, the Regional Administrator participates more actively in the permit issuance process in conjunction with the state and the applicant. He must concur in the effluent limitations and in any other conditions included in the permit by the state. Once the permit is issued, he again assumes an advisory role.
C.
The Rock Creek Plant Project
This particular controversy involves the issuance of an NPDES permit by the state
of Maryland to the Washington Suburban Sanitary Commission (Sanitary Commission) to operate for five years an advanced wastewater treatment plant that may discharge up to three million gallons per day of treated effluent into Rock Creek. Officials and developers in Maryland proposed the plant to relieve the overburdened Blue Plains Sewage Treatment Plant by diverting sewage from Blue Plains and discharging the treated effluent into Rock Creek. The plant would allow continued growth in Montgomery County, Maryland, and at the same time give area officials time to devise a permanent solution to metropolitan Washington’s acute shortage of sewage treatment capacity.
The Montgomery County Council approved the proposal to construct the plant in July 1975.
The Washington Suburban Sanitary Commission then submitted the proposal to the Maryland Water Resources Administration for an NPDES permit. The Water Resources Administration in turn notified the EPA of the application, which designated the application as meriting joint review. During a year-long study of the permit application, Maryland authorities mailed notices of the application to interested parties
and published classified advertisements in newspapers announcing public hearings on the application.
See
J.A. at 251, 257.
After the EPA indicated under its joint review procedures that it had no objections to the project, Maryland issued a permit to the Sanitary Commission on October 4, 1976. Pursuant to 33 U.S.C. § 1311(b)(1)(C) (1976), the permit established limitations on the discharge of effluent that incorporated both federal and more stringent state standards,
see
1:1 Md.Reg. 40^41 (1974) (codified at COMAR [Code of Maryland Regulations] 08.05.04.03 (1979)).
The District became involved seven months after issuance of the permit. District and Maryland officials exchanged letters and held meetings to resolve differences over the plant, which was under construction during this period. On May 2, 1978, after efforts at accommodation failed, the District filed suit in federal district court seeking declaratory relief and an injunction against the discharge of effluent by the plant into Rock Creek. Named as defendants were the EPA; the State of Maryland; and officials of the EPA, the Washington Suburban Sanitary Commission, and the Maryland Water Resources Administration.
The plant began operation on September 14, 1978. Eleven days later, the court held a hearing on the District’s complaint and on its consolidated motion for a temporary injunction prohibiting operation of the plant. Both sides presented witnesses and documentary evidence.
On September 25,1978, the court entered judgment for the defendants. The court held that the plaintiff had
failed to show that it will suffer irreparable injury because of the operation of the [plant]; plaintiff has not shown that the discharge of the treated effluent has had or will have an adverse impact on the water quality of Rock Creek or that it will violate the adopted water quality standards for Rock Creek.
District of Columbia v. Schramm,
No. 78-0785, at 4 (D.D.C. Sept. 29, 1978),
reprinted
in
J.A. at 449, 452. Having found no harm from the operation of the plant, the court did not resolve the District’s claim regarding the lack of notice. In addition, the court found that issuance of an injunction would not be in the public interest. The court therefore denied injunctive and declaratory relief, citing the standards announced in
Virginia Petroleum Jobbers Association v. Federal Power Commission,
259 F.2d 921 (D.C.Cir.1958).
II. FEDERAL COURT REVIEW OF STATE NPDES DECISIONS
A.
EPA’s Acquiescence in Issuance of State NPDES Permit
The District charges that the EPA’s failure to veto Maryland’s grant of an NPDES permit did not comport with the provisions of the Clean Water Act. The District views Maryland’s failure to notify it, a downstream jurisdiction, as a fatal defect that compels revocation of the permit and closure of the plant until new studies are completed. Furthermore, the District argues that the Clean Water Act required the EPA and Maryland officials to consult with the Department of the Interior and the National Capital Planning Commission regarding a treatment plant that would degrade Rock Creek’s waters. Finally, the District believes the EPA and Maryland impermissibly failed to incorporate limitations on infectious viruses in the permit itself and unlawfully included a treatment bypass provision that will allow the discharge of untreated sewage into Rock Creek. These errors, according to the District, justify granting injunctive relief barring the discharge of effluent into Rock Creek.
At the outset, however, the EPA raises a threshold jurisdictional issue. It contends that its decision not to object to a state-issued permit is one “committed to agency discretion by law,” 5 U.S.C. § 701(a)(2) (1976), and therefore not re viewable in federal court. The District responds that the EPA’s participation in the joint review and approval of the permit application constituted final agency action reviewable under the Administrative Procedure Act,
id.
§ 702 (1976).
Federal courts clearly may review Agency vetoes of state NPDES decisions. Under section 509(b)(1)(F), 33 U.S.C. § 1369(b)(1)(F), the United States courts of appeals are empowered to “[rjeview . the Administrator’s action in issuing or denying any permit under [33 U.S.C.] section' 1342 .. . .”
Id.
When the EPA objects to a state permit, “the precise effect is to ‘deny[]’ a permit within the meaning of section 509(b)(1)(F).”
Crown Simpson Pulp Co. v. Costle,
445 U.S. 193, 196, 100 S.Ct. 1093, 1095, 63 L.Ed.2d 312 (U.S. Mar. 17, 1980) (per curiam);
Republic Steel Corp. v. Costle,
581 F.2d 1228, 1230 n.l (6th Cir. 1978),
cert. -denied,
440 U.S. 909, 99 S.Ct. 1219, 59 L.Ed.2d 457 (1979). Direct review by the courts of appeals ’ “ensure[s] prompt resolution of challenges to EPA’s actions and . . . recognize[s] that EPA’s veto of a state-issued permit is functionally similar to its denial of a permit in States which do not administer an approval permit-issuing program.”
Crown Simpson Pulp Co. v. Costle,
445 U.S. at 1094, 100 S.Ct. at 1094.
Review of the Agency’s decision not to veto a state permit is a more difficult question.
When the Agency vetoes a permit, a clear record exists of its actions and reasons; when the Agency decides not to
act, there may be no record to review. Having examined the legislative scheme, the policies of the Clean Water Act, and the case law, we conclude that the Agency’s decision not to veto a state NPDES permit is not reviewable in federal district court.
In considering the Clean Water Act, Congress carefully constructed a legislative scheme that, imposed major responsibility for control of water pollution on the states. Once the EPA approves a state program for issuing NPDES permits, Congress envisioned the EPA’s role as largely a supervisory one. The Agency retains a veto over the issuance of state permits, but it may also waive responsibility for objecting to noncomplying state permits and even waive notice of the NPDES applications. 33 U.S.C. § 1342(d)(3), (e).
The course of the Clean Water Act through Congress demonstrates the emphasis Congress placed on giving responsibility to the states and letting the Agency exercise discretion in supervising the NPDES program. The Senate version of the Act, S. 2770, 92d Cong., 1st Sess. (1971),
reprinted in
2 Legislative History 1534, originally required Agency approval for all major state-issued permits.
See
S.Rep.No. 414, 92d Cong., 1st Sess. 71-72 (1972),
reprinted in
2 Legislative History 1489-90. The House version, H.R. 11896, 92d Cong., 1st Sess. (1971),
reprinted in
1 Legislative History at 893, however, entrusted more responsibility to the states; states with Agency-approved programs would themselves issue permits, subject only to a discretionary veto by the Agency.
See
H.R.Rep.No. 911, 92d Cong., 1st Sess. 127 (1972),
reprinted in
1 Legislative History 814. This provision placed the major burden for regulating water pollution on the states. The House committee considering the bill stated:
representatives of the States, almost unanimously, stressed the need to put the maximum responsibility for the permit process in the States. They deplored the duplication and second guessing that could go on if the Administrator could veto the State decisions. The Committee believes that the States ought to have the opportunity to assume the responsibilities that they have requested.
Id.
The bill that emerged from the conference committee and became the Clean Water Act featured provisions of H.R. 11896 that gave the states the primary responsibility for issuing NPDES permits. The bill also made the EPA approval of state programs meeting the statutory requirements mandatory rather than discretionary, as in S. 2770. In addition, the final version incorporated the waiver provisions of the House and Senate bills, thereby permitting the EPA to waive the notification requirement under section 1342(e) and to waive its right to veto an application for failure to follow the guidelines under section 1342(d)(3).
These provisions reflect the desire of Congress to put the regulatory burden on the states and to give the Agency broad discretion in administering the program. As Representative James Wright stated in describing the NPDES permit process,
If the Administrator determines that a State has the authority to issue permits consistent with the act, he shall approve the submitted program. In that event, the States, under State law, could issue State discharge permits. These would be State, not Federal actions .
. The managers expect the Administrator to use this authority [over state programs] judiciously; it is their intent that the act be administered in such a manner that the abilities of the States to control their own permit programs will be developed and strengthened. They look for and expect State and local interest, initiative, and personnel to provide a much more effective program than that which would result
from control in the regional offices of the Environmental Protection Agency.
118 Cong.Rec. 33761 (1972),
reprinted in
1 Legislative History 262 (remarks of Rep. Wright).
This legislative history compels the conclusion that the Agency’s decision not to review or to veto a state’s action on an NPDES permit application is “committed to agency discretion by law.” 5 U.S.C. § 701(a)(2) (1976). Although section 701(a)(2) has a narrow scope,
see Citizens to Preserve Overton Park, Inc. v. Volpe,
401 U.S. 402,91 S.Ct. 814, 28 L.Ed.2d 136 (1971), it applies here, where “ ‘the statutes are drawn in such broad terms that . there is no law to apply.’ ”
Id.
at 410, 91 S.Ct. at 821 (quoting S.Rep.No. 752, 79th Cong., 1st Sess. 26 (1945)). The Clean Water Act allows the EPA to choose whether to participate in the application for a state NPDES permit. The Act also gives the EPA freedom to waive notice of the application and to waive any violations in the permit. Certain guidelines apply to the application process, but these guidelines do not bind the Agency in its supervisory role of monitoring state permits. In reaching substantially the same conclusion, the Court of Appeals for the Fifth Circuit noted that
the legislative history makes very clear that Congress intended EPA to retain discretion to decline to veto a permit even after the agency found some violation of applicable guidelines. That legislative history, more explicit and unequivocal than generally found, leans in almost every expression toward minimal federal intervention when a state plan has been approved.
. In light of the pervasiveness of this theme, . . . and the conferral of broad discretion to waive review of individual permits, we conclude that Congress intended to allow the Administrator to consider the significance of any guideline violations in terms of the overall goal of the [Act] ....
Save the Bay, Inc. v. EPA,
556 F.2d 1282, 1294 (5th Cir. 1977).
That the Agency participated in a joint review of the application with Maryland officials does not alter this conclusion. Though the Agency fulfilled its responsibility of reviewing the “limitations and other conditions imposed as part of a draft permit,” Memorandum of Agreement at 10,
reprinted in
J.A. at 45, by advising state officials concerning the effluent limitations and regional sewage treatment planning,
see
Letter from Charles W. Sapp to Arnold Schiffman (June 14,1976),
reprinted in
J.A. at 127, such participation does not make the Agency’s actions reviewable in federal district court. EPA involvement is still discretionary, and its involvement in the issuance of the plant’s permit did not undercut the primary responsibility of the state of Maryland to consider and approve the NPDES application. Granting federal court review of the Agency’s actions in cases such as this one would upset the federal-state balance struck by Congress: it would allow parties to create a basis for federal jurisdiction when federal involvement is merely secondary. As the Ninth Circuit stated in
Shell Oil Co. v. Train,
585 F.2d 408 (9th Cir. 1978),
a holding that statutorily sanctioned advice by the EPA to a state constitutes final federal agency action reviewable in the federal courts would permit an applicant, dissatisfied with a decision of a state board, to circumvent the appellate process envisioned by the statute and bestow jurisdiction upon a federal court simply by alleging coercion or undue influence.
Id.
at 414.
See generally
Note,
Jurisdiction to Review Informal EPA Influence Upon State Decisionmaking Under the Federal Water Pollution Control Act,
92 Harv.L. Rev. 1814 (1979). Such a result would be unacceptable. Therefore, we hold that the Agency’s actions regarding Maryland’s approval of the NPDES permit for the plant are not reviewable in federal court.
B.
EPA’s Obligation to Prepare an Environmental Impact Statement
The District further contends that the Agency had a duty to prepare an environmental impact statement under the National Environmental Policy Act of 1969, 42 U.S.C. §§ 4321-4347 (1976). The District cites as support for its contention 33 U.S.C. § 1371(c),
which states in part that “the issuance of a [NPDES] permit for the discharge of any pollutant by a new source” can be a “major Federal action significantly affecting the quality of the human environment.”
Id.
Such “major Federal action” requires an environmental impact statement. 42 U.S.C. § 4332(2)(C).
We disagree with the District’s fundamental premise that the EPA “issued” the permit for the Rock Creek plant. After the study under the joint review program was completed, the EPA elected not to veto the project under 33 U.S.C. § 1342(d)(2). It was the state of Maryland that approved and issued the permit. As a district court considering the same question stated, “the determination of the federal government not to object . . . ‘cannot realistically be classified as “Federal action” much less “major” Federal action’ . . . .”
Chesapeake Bay Foundation, Inc. v. Virginia State Water Control Board,
453 F.Supp. 122, 125 (E.D.Va.1978) (quoting
Molokai Homesteaders Cooperative Association v. Morton,
506 F.2d 572, 580 (9th Cir. 1974)).
See generally
McGarity,
The Courts, the Agencies, and NEPA Threshold Issues,
55 Tex.L.Rev. 801, 837-38 & n.139, 851 (1977). These being no “major Federal action,” the Agency was not required to prepare an environmental impact statement.
C.
Maryland’s Issuance of the NPDES Permit
Congress did not explicitly provide a federal cause of action to persons seeking review of state decisions on NPDES applications. The District nonetheless claims that it has a federal cause of action implicit in the statutory scheme. The Maryland defendants, on the other hand, contend that federal law does not create such a cause of action and that the District is relegated to whatever rights and remedies may be available under Maryland law.
A cause of action may exist where the federal statute does not explicitly provide one.
See, e. g., J. I. Case Co. v.
Borak,
377 U.S. 426, 84 S.Ct. 1555, 12 L.Ed.2d 423 (1964). A court must look to Congress’s intent when enacting the federal statute to determine whether a corresponding federal right of action is created.
See Cannon v. University of Chicago,
441 U.S. 677, 688, 99 S.Ct. 1946, 1953, 60 L.Ed.2d 560 (1979);
Cort v. Ash,
422 U.S. 66, 95 S.Ct. 2080, 45 L.Ed.2d 26 (1975). In determining whether a private right of action exists, a court must consider four questions: (1) Is the plaintiff a member of the special class for whom the statute was created? (2) Is there evidence of legislative intent to confer or deny a right? (3) Is it consistent with the purpose of the legislative scheme to imply the right? (4) Is the subject matter an area traditionally relegated to state law, so that a cause of action based solely on federal law would be inappropriate?
Id.
at 78, 95 S.Ct. at 2088.
Having considered these factors, we believe a federal right of action is not implicit in the Clean Water Act. The District is a member of the general class designed to be protected by the Act. The Act’s structure and legislative history, however, argue strongly against implying a federal cause of action.
In authorizing the creation of state NPDES permit programs, Congress made clear that state permits would be issued “under State law [and] would be State, not Federal, actions . . . .” 118 Cong.Rec. 33761 (1972),
reprinted in
1 Legislative History at 262 (remarks of Rep. Wright). Before granting a state authority to issue these permits, Congress requires the state to create adequate enforcement mechanisms for administering its program. 33 U.S.C. § 1342(b). A state can qualify to “establish and administer under State law” its own NPDES program only if the state attorney general submits a statement “that the laws of such State . . provide adequate authority to carry out the program:” Id.
Among other requirements,
the state must have sufficient authority “[t]o abate violations of the permit or the permit program, including civil and criminal penalties and other ways and means of enforcement.”
Id.
§ 1342(b)(7). By requiring states to maintain or create sufficient legal and equitable rights and remedies to deal with violations of state permits in order to exercise permit-granting powers under the Act, Congress must have intended that states apply their own law in deciding controversies involving state permits.
Given the existence of adequate state remedies and the strong current of federalism in the Clean Water Act, we believe we should not infer a federal right of action in this case. The state courts are the proper forums for resolving questions about state NPDES permits, which are, after all, questions of state law. We therefore remand this case to the district court with instructions to dismiss the complaint insofar as it deals with Maryland’s issuance of an NPDES permit for the Rock Creek plant.
III. FEDERAL COMMON LAW OF NUISANCE
The District also contends that the Maryland defendants are violating the federal common law of nuisance by discharging effluent into Rock Creek., In
Illinois v. City of Milwaukee,
406 U.S. 91, 92 S.Ct. 1385, 31 L.Ed.2d 712 (1972), the Supreme Court recognized such a cause of action for states
injured by pollution of interstate or navigable waters. The Court concluded that such pollution presented a general federal question, with the action cognizable under federal common law in federal district court under 28 U.S.C. § 1331 (1976).
To be entitled to equitable relief, the complainant must demonstrate “that the defendant is carrying on an activity that is causing an injury or significant threat of injury to some cognizable interest of the complainant.”
Illinois v. City of Milwaukee,
599 F.2d 151, 165 (7th Cir. 1979). The District has failed to make such a showing and therefore is not entitled to equitable relief.
The district court in its opinion held that the District had failed to demonstrate any harm from the operation of the plant. We believe this finding is clearly supported in the record. The District did not have reliable data documenting the impact of the discharge of effluent by the plant on the quality of water in Rock Creek; in fact, the District’s data on water quality came entirely from tests taken before the plant began operations. J.A. at 332-33. Furthermore, the available data were inconclusive. The parties disagreed on the proper level of dissolved oxygen to use in the Streeter-Phelps formula, which measures biochemical oxygen demand of a waterway, and the District presented no evidence on the recovery of the creek’s oxygen levels in the twelve miles from point of discharge to the District’s border.
Many variables affect a stream’s water quality, for example, the natural aeration of the stream, its confluence with tributaries, the seasons, and the urban or rural setting of the stream. The District did not account for many of these variables in presenting its evidence to the district court. If the District had shown that the plant is injuring Rock Creek, it would have been entitled to some form of relief. On the present record, however, the district court properly concluded that the District had not demonstrated harm to Rock Creek.
IV. CONCLUSION
Under the Clean Water Act, interstate cooperation is vital in dealing with water pollution. Pollution does not stop at state borders; neither should the cooperation be
tween different jurisdictions. We pray that, in the future, jurisdictions can resolve disputes amicably by focusing on the common enemy, pollution. If this cooperation does not take place, we and our children will all be the losers.
Affirmed in part and remanded in part with instructions.
