Supreme Court to Decide Who's Responsible for Storm Water Pollution

A case over "who can be held responsible for polluted storm water that runs off city streets and into rivers and bays" is headed to the U.S. Supreme Court tomorrow. The court's ruling on the Los Angeles case could have far-reaching impacts.

2 minute read

December 3, 2012, 2:00 PM PST

By Jonathan Nettler @nettsj


Pretty City. Don't swim after storm.

Keoni Cabral / Flickr

discusses the details of the case, which "arises from a long-running dispute between Southern California environmental groups and the Los Angeles County Flood Control District over the billions of gallons of polluted water that flow into the Los Angeles and San Gabriel rivers after heavy rainfalls."

"Storm water runoff 'is the No. 1 source of pollution in the rivers and along the coastline,' and it sickens thousands of beach visitors every year, said Liz Crosson, executive director of Los Angeles Waterkeeper [a plaintiff, along with the Natural Resources Defense Council]. Advocates hoped the lawsuit would force the county and all of its municipalities to adopt stricter measures to prevent pesticides, trash, used motor oil and other chemicals from flowing into storm drains."

The case illustrates the difficulty of regulating storm water and of assigning blame for the sources of pollution, says Savage. "County officials agree storm water is polluting the rivers but disagree on who is responsible."

"Yes, there are pollutants in the water, but dozens of municipalities are upstream from there. It's a collective runoff. It doesn't point to a particular source," Gary Hildebrand, assistant deputy director of the L.A. County Flood Control District, said in an interview.

"Experts on both sides agree they have seen progress over the past two decades in limiting pollution from storm runoff, but more needs to be done. 'This is a very complex problem,' Hildebrand said. 'There is a lot more to do, and we need to do it municipality by municipality, across the watershed.'"

Saturday, December 1, 2012 in Los Angeles Times

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 16, 2025 - Diana Ionescu

Green vintage Chicago streetcar from the 1940s parked at the Illinois Railroad Museum in 1988.

Chicago’s Ghost Rails

Just beneath the surface of the modern city lie the remnants of its expansive early 20th-century streetcar system.

July 13, 2025 - WTTV

Blue and silver Amtrak train with vibrant green and yellow foliage in background.

Amtrak Cutting Jobs, Funding to High-Speed Rail

The agency plans to cut 10 percent of its workforce and has confirmed it will not fund new high-speed rail projects.

July 14, 2025 - Smart Cities Dive

Worker in yellow safety vest and hard hat looks up at servers in data center.

Ohio Forces Data Centers to Prepay for Power

Utilities are calling on states to hold data center operators responsible for new energy demands to prevent leaving consumers on the hook for their bills.

July 18 - Inside Climate News

Former MARTA CEO Collie Greenwood standing in front of MARTA HQ with blurred MARTA sign visible in background.

MARTA CEO Steps Down Amid Citizenship Concerns

MARTA’s board announced Thursday that its chief, who is from Canada, is resigning due to questions about his immigration status.

July 18 - WABE

Rendering of proposed protected bikeway in Santa Clara, California.

Silicon Valley ‘Bike Superhighway’ Awarded $14M State Grant

A Caltrans grant brings the 10-mile Central Bikeway project connecting Santa Clara and East San Jose closer to fruition.

July 17 - San José Spotlight