International Paper Co. v. Ouellette

Background

Petitioner's International Paper Company runs a pulp and paper mill on the New York side of Lake Champlain and discharges effluent through a pipe that stops short of the state line. A group of Vermont shoreline property owners sued in Vermont state court in 1978, claiming the discharges created a continuing nuisance, damaged property values, and asked for money and an injunction. The case was removed to federal court, and the central dispute became whether the federal Clean Water Act (CWA) prevents Vermont law from being applied to an out‑of‑state polluter.

Reasoning

The Court explained that the 1972 CWA amendments created a comprehensive federal permit system (NPDES) that gives source States primary regulatory authority and only an advisory role to downstream or affected States. Reading the Act’s saving clauses narrowly, the Court found that allowing affected States to impose their own nuisance rules on out‑of‑state point sources would interfere with federal procedures, create conflicting standards, and undermine predictability. As a result, the Court held that state‑law suits about pollution must be governed by the law of the State where the point source is located.

Real world impact

Practically, courts in affected States can hear nuisance suits, but they must apply the source State’s substantive law. Individuals retain remedies under the CWA — including citizen suits — and can bring state common‑law claims in the source State. The decision aims to preserve the federal permit scheme and avoid multiple inconsistent rules that could force polluters to meet many different standards.

Dissents or concurrances

Justices Brennan and Stevens agreed that the suit could proceed but disagreed with deciding choice‑of‑law now. They argued Congress intended to preserve traditional state tort rights and that normal conflict‑of‑law rules should determine which State’s law applies.