EPA Launches Long-Awaited Cleanup of Gowanus Canal

Gowanus Creek was channelized in the 1800s and has been accumulating sludge ever since.

1 minute read

October 25, 2017, 5:00 AM PDT

By Elana Eden


Gowanus Canal, Dirty Water

David MW / Flickr

The U.S. Environmental Protection Agency has begun preliminary work on a major cleanup of the Gowanus Canal, which the agency has called "one of the nation's most seriously contaminated bodies of water."

The canal became a Superfund site in 2010, but has been notoriously dirty for much longer—even earning the nickname "Lavender Lake" in the 1900s, Jackson Rollings reports in The Architect’s Newspaper.

At present, 26 million gallons of raw sewage flood into the canal per year, which the advent of new underground sewage tanks is expected to reduce to 11 million gallons per year. Flooding is still a common occurrence for nearby residents.

The dredging that began this month is the first step in a $506 million, multi-phase plan to revitalize the channel. The first remediation attempt in the canal's history, it coincides with recent development interest at the Gowanus waterfront, as well as a community planning process associated with New York's citywide rezoning program.

Monday, October 16, 2017 in The Architect's Newspaper

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

2 hours ago - Zachary Whalen

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

A brick building with a circular sign with the Airbnb logo hanging off of it.

Airbnb launches $250 million 'last-dollar financing' housing accelerator, makes first investment in Austin

The company will put $6.4 million towards affordable housing development in Texas’ capital.

45 minutes ago - Smart Cities Dive

One side of the image shows a Chicago bus stop without a bench, the second image shows the bus stop with a yellow and blue bench.

Guerilla urbanists are building DIY bus stop benches in Chicago

A before-and-after of one of the bus stops with a new bench. The new benches are not officially sanctioned or permitted, but the residents who placed them hope they will be the start of a network of DIY benches across the city.

1 hour ago - Block Club Chicago

NYC Mayor Zohran Mandami speaks behind a blue podium.

Mamdani overhauls NYC's Vision Zero plan with 100 new policy goals

The overhaul aims to reduce traffic deaths and make streets safer for pedestrians, cyclists and drivers through lower speed limits, new safety infrastructure and more.

2 hours ago - ABC 7 Eyewitness News

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.