South Florida Water Management District v. Miccosukee Tribe of Indians
The Court ruled that a pump station can require a federal Clean Water Act permit even if it doesn't create the pollutants itself, rejecting the water district's argument that only the original polluter needs a permit.
But the Court sent the case back to the trial court, because it was unclear on the existing record whether the canal and the wetland it pumps into are really two separate bodies of water or just two parts of the same one.
How it got here: A federal trial court granted summary judgment for the Tribe requiring a permit; the Eleventh Circuit affirmed; the water district asked the Supreme Court to review.
The Case in Depth
What happened
A Florida water agency operates a pump station, S-9, that moves phosphorus-laden water from a canal serving farms and neighborhoods into a large Everglades wetland preserve the agency also manages. The Miccosukee Tribe and an environmental group sued, arguing the pumping added pollutants to the wetland and needed a Clean Water Act discharge permit that the agency never obtained.
The question before the Court
Did a Florida water agency need a federal pollution permit to pump water from a polluted canal into a nearby Everglades wetland it manages?
Why it matters
Water agencies and industries that move water between connected water bodies now know that simply not adding pollutants themselves won't exempt their pumps from federal permitting. But because the Court left the deeper factual and 'unitary waters' legal questions unresolved, water managers around the country remain uncertain exactly when moving water between basins triggers permit obligations.
What changes now
The case returns to the trial court, which must further develop the factual record on whether the canal and the wetland are genuinely distinct water bodies, including what would happen to water flow if the pump were shut down. The water district and the government remain free to raise the unresolved 'unitary waters' legal theory on remand. This is a merits decision that leaves key legal and factual questions for further proceedings rather than a final resolution of the permit dispute.
What this does not decide
The Court did not decide whether the canal and wetland are actually distinct water bodies, nor did it resolve the government's broader 'unitary waters' theory that moving water between two federally regulated waters never needs a permit. Both questions remain open for the lower court and future cases.
Concurrences and dissents
Dissent in part — Justice Scalia
“I see no point in directing the Court of Appeals to consider an argument it has already rejected.”Scalia's objection to reopening the unitary-waters argument on remand.
Justice Scalia agreed that a point source doesn't have to originate the pollutant itself, but disagreed with sending the case back. He argued the government's 'unitary waters' theory had already effectively been raised and rejected below, so there was no need to invite it again. He also thought the majority's flooding-based rationale for reversing summary judgment was an argument no party had actually made, and would have simply affirmed the Eleventh Circuit.
How the Court got there
The legal reasoning, step by step
- The Court first addressed the district's argument that a 'point source' — a pipe, ditch, or similar conveyance — only triggers permitting when it originates the pollutant itself, not when it merely moves already-polluted water along.
- The Court rejected that reading: the statute's definition of point source includes conveyances that never generate pollutants, like pipes and ditches, and one of the law's central goals was regulating sewage treatment plants that only pass along pollutants others created.
- The government separately argued for a 'unitary waters' approach, under which moving water between two bodies that both count as federally regulated waters would never need a permit at all. The Court found this theory was never squarely raised in the lower courts and declined to decide it now, leaving it open for the case's return to the trial court.
- The Court then turned to the district's core factual claim: that the canal and the wetland are not really two separate water bodies but two parts of one connected system, so pumping between them adds nothing.
- Applying the ordinary summary-judgment standard — that a case can only be resolved without a trial when there is no genuine dispute over the facts that matter — the Court found the record incomplete, since it did not address what would happen to the water's path if the pump were shut off.
- Because those unresolved factual questions could affect whether the canal and wetland are truly distinct water bodies, the Court held the summary judgment was granted prematurely and the case needed further factual development before that legal question could be decided.
Doctrinal impact
Cases affected by this decision
Reaffirms Celotex Corp. v. Catrett (477 U.S. 317)
The Court relied on this case's rule that summary judgment requires no genuine dispute over facts that matter.