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Muddy Waters: The Supreme Court Sets New Standard For When The CWA Applies

In an opinion that may foreshadow years of litigation, the Supreme Court has handed down its long-anticipated decision in County of Maui, Hawaii v. Hawaii Wildlife Fund. The 6-3 opinion authored by Justice Breyer concluded that the Clean Water Act (CWA) goes beyond mandating permits for direct discharges into navigable waters but “requires a permit when there is a direct discharge from a point source into navigable waters or when there is the functional equivalent of a direct discharge.” This standard is left undefined and will be the focus of future disputes over the scope of the CWA.

The case concerns a wastewater facility operated by the County of Maui in Hawaii. The facility collects wastewater, partially treats it, and pumps the treated wastewater through four wells located hundreds of feet underground. The wastewater then mixes with groundwater that eventually finds its way into the ocean, about a half-mile from the facility.

In 2012, environmental groups brought a citizen suit under the Clean Water Act, claiming that the facility needed a permit under the act. The district court agreed, holding that because the “path to the ocean is clearly ascertainable,” the facility’s discharges were “functionally one into navigable water.”

The Ninth Circuit affirmed, but employed a broader standard that would require a permit any time “the pollutants are fairly traceable from the point source to a navigable water such that the discharge is the functional equivalent of a discharge into the navigable water.” The circuit court left “for another day the task of determining when, if ever, the connection between a point source and a navigable water is too tenuous to support liability.”

Striking a ‘Middle Ground’

The Supreme Court rejected the Ninth Circuit’s “fairly traceable” standard and held that the Clean Water Act only applies where “the addition of the pollutants through groundwater is the functional equivalent of a direct discharge from the point source into navigable waters.” 

The Court concluded that a “fairly traceable” rule would “allow EPA to assert permitting authority over the release of pollutants that reach navigable waters many years after their release (say, from a well or pipe or compost heap) and in highly diluted forms.” The Court also expressed a concern that this broader standard would usurp too much state law regulatory authority and involve the EPA in nonpoint source pollution and groundwater matters that the CWA leaves to the states.

But the Court also rejected the bright-line rule urged by Maui County and EPA (through the Solicitor General), which would have provided that discharges to groundwater are simply not covered by the Clean Water Act. According to Maui County and EPA, this standard would hew closer to the plain language of the statute. But the Court decided this standard was “too narrow” and would risk manipulation by sources. The Court concluded that the bright-line approach “would risk serious interference with EPA’s ability to regulate ordinary point source discharges.”

The Court ultimately concluded that the controlling Clean Water Act standard fell somewhere between these two poles. It tried to strike “a middle ground between these extremes” by concluding that the CWA applies to any direct discharge as well as actions that are the “functional equivalent” of a direct discharge. 

The Court provided a few guideposts as to how lower courts should apply the new “functional equivalent” test. For instance, it explained that “[t]ime and distance are obviously important. It gave the example of where “a pipe ends a few feet from navigable waters and the pipe emits pollutants that travel those few feet through groundwater.” The Court also instructed the lower courts to look to the CWA’s “statutory purposes” in applying the functional equivalent test in any given circumstance. 

However, the opinion ultimately left it to the lower courts to “provide guidance through decisions in individual cases.” 

The Court did not resolve the question of whether the Maui facility actually needed a National Pollutant Discharge Elimination System (NPDES) permit. Because the Court concluded that the Ninth Circuit did not apply the proper standard, the Supreme Court remanded “for further proceedings consistent with this opinion.” 

Justice Thomas (joined by Justice Gorsuch) and Justice Alito filed separate dissents and would have applied a bright-line rule that only a “direct” discharge requires a CWA permit. Justice Thomas rejected the “functional equivalent” standard because he believed it deviated from the statutory language and invited lower courts to engage “an open-ended inquiry into congressional intent and practical considerations.” Justice Alito put the matter more bluntly: “If the Court is going to devise its own legal rules, instead of interpreting those enacted by Congress, it might at least adopt rules that can be applied with a modicum of consistency. Here, however, the Court makes up a rule that provides no clear guidance and invites arbitrary and inconsistent application.”

What It Means

The ultimate holding of the Maui County opinion is that: 

  • The fact that wastewater passes through groundwater will not necessarily shield the discharger under the CWA

  • Some “indirect” discharges will require NPDES permits under the CWA

  • The U.S. Supreme Court rejected a far more expansive standard that would have swept in many more potential sources into the CWA

As the Court expressly acknowledged, the parameters of the “functional equivalent” test will be fleshed out over the course of litigation in the coming years. The opinion threatens to expand the CWA by requiring many new entities to seek permits under the CWA. The opinion also threatens litigation for those who do not, a significant problem given that the Maui County case has stretched eight years and is continuing. 

The Court also encouraged the EPA to provide “administrative guidance (within statutory boundaries)” through permits and by “the development of general rules.” EPA has not made a public statement on the ruling, but the EPA will likely provide administrative guidance on the issue in the near future. 

© 2020 BARNES & THORNBURG LLPNational Law Review, Volume X, Number 121


About this Author

Fredric Andes Environmental Attorney

Fredric P. Andes is a partner in the Chicago and Washington, D.C., offices of Barnes & Thornburg and the leader of the firm's water team. Fred is involved in counseling and litigation on issues arising under various federal and state environmental laws, with a special emphasis on Clean Water Act matters.

Fred is involved in clean water issues on the national and state levels. He was selected by the EPA to serve on the Federal Advisory Committee on the Total Maximum Daily Load (TMDL) Program. He is serving as coordinator for the Federal Water Quality Coalition, which is a group...

Mark Crandley Litigation Attorney

Appellate adviser and litigator Mark Crandley is at his best when faced with high-stakes claims that involve issues of critical importance and concern. After nearly two decades of practice, Mark knows what does and does not work. Clients and colleagues alike rely upon him for his judgement and leadership throughout the dispute resolution process.

Mark focuses his practice on appeals, constitutional and government law, commercial litigation, and the resolution of probate disputes. He has represented government entities and businesses in courts across the country, and is valued for his skill in creating effective and efficient litigation strategies, particularly in expedited litigation.

As co-chair of the firm’s Appeals and Critical Motions practice and a founder and chair of the firm’s Government Litigation group, Mark has represented clients in scores of appeals in both state and federal courts. He has argued before the Indiana Supreme Court on numerous occasions and has also argued before the U.S. Court of Appeals for Seventh Circuit and for the Sixth Circuit Court, the Indiana Court of Appeals and the Ohio Court of Appeals. Mark has also authored dozens of amicus curiae briefs, including amicus briefs submitted to the U.S. Supreme Court. Mark collaborates with other Barnes & Thornburg attorneys to produce an annual review examining the Indiana Supreme Court’s docket that is published by the Indiana Law Review.

Mark’s practice includes representing local governments in litigation throughout the state of Indiana. He has litigated a broad spectrum of constitutional and municipal law issues, including cases involving municipal utilities, annexation, municipal finance, government contracting, the Home Rule Act, zoning and the federal and Indiana constitutions. He has represented clients in cases of first impression regarding access to public records, public-private partnerships, municipal reorganization, and election issues. He has defended complex constitutional challenges to a variety of state laws and local ordinances. In addition, Mark regularly speaks on topics affecting state and local governments and has co-taught a law school class on the Indiana Constitution.

Mark’s commercial litigation practice includes litigation in both state and federal court, where he has tried cases both to the bench and to juries. He has represented clients in cases involving breach of contract, Articles 2, 3, 4 and 9 of the Uniform Commercial Code, trade secrets and various forms of trade regulation.

Mark also represents individuals and corporate fiduciaries in probate disputes. He has tried multiple trust and guardianship cases throughout Indiana and on appeal.

Prior to rejoining the firm in 2005, Mark served as in-house counsel for the city of Indianapolis, representing the city in complex civil rights litigation and appeals in state and federal courts. As a result, Mark has an inside perspective on how government agencies operate and what drives their decision-making process, often a key component of effectively representing them today.

Before launching his legal career, Mark worked as a newspaper reporter and editor.