New Jersey v. New York

1953-04-06

Headline: Court denies Philadelphia leave to join Delaware River water dispute, upholding Pennsylvania’s representation and keeping states, not cities, responsible for large interstate water disputes.

Holding: The Court denied the City of Philadelphia leave to intervene because the Commonwealth of Pennsylvania adequately represents Philadelphia’s interests and municipal intervention would unduly expand original interstate litigation.

Real World Impact:

Leaves states responsible for representing local residents in interstate water disputes.
Prevents Philadelphia from separately challenging New York’s proposed increased water diversion.
Limits local governments’ ability to intervene in original state-to-state suits without distinct interests.

Topics: interstate water rights, municipal intervention, state representation, Delaware River dispute

Summary

Background

The dispute began when the State of New Jersey sued the State of New York and New York City in 1929 over a planned diversion of Delaware River water. A 1931 decree limited New York’s diversion to 440 million gallons daily and allowed later modification. In 1952 New York City sought to change that decree to take more water. On December 13, 1952, the City of Philadelphia moved to intervene, saying it had a direct interest because it draws water from the watershed and now governs its own water system under a new Home Rule Charter.

Reasoning

The Court refused Philadelphia’s request. It explained that when a State is a party in an interstate suit, the State is deemed to represent the interests of its citizens, including cities. Pennsylvania had already intervened in 1930 to protect Philadelphia and Eastern Pennsylvania and still opposes increased diversion. The Court said allowing Philadelphia to intervene would open the door to many municipalities and private entities, unduly expanding the Court’s original state-to-state business. Philadelphia had not shown a separate, compelling interest beyond what the Commonwealth represents.

Real world impact

As a result, Philadelphia cannot separately join this long-running interstate water case; Pennsylvania will continue to represent its interests before the Court. The ruling restricts local governments from stepping into original suits between states unless they can show a distinct interest not covered by their state.

Dissents or concurrances

Justice Jackson, joined by Justice Black, dissented. He would have allowed Philadelphia to intervene because New York City is the moving party now and municipalities with home-rule powers can have concrete, vital interests that merit direct participation.