Poop Water Closes Iconic Beaches

Fecal bacteria shut down dozens of American beaches heading into the Fourth of July weekend, and a new report reveals this is happening at nearly two-thirds of U.S. beaches every single summer.

Story Snapshot

Beaches in at least seven states closed or issued swim warnings due to fecal bacteria before the July Fourth holiday weekend.
Massachusetts alone closed nearly 20 beaches, with some counts reaching 37 closures in a single day.
A 2024 Environment America report found 61% of tested U.S. beaches recorded unsafe fecal bacteria levels at least once that year.
Heavy rain, aging sewer systems, and stormwater runoff are the main drivers pushing bacteria into swimming water.

Beaches From Coast to Coast Hit With Closures

Before Americans could fire up the grill this past Fourth of July, health officials in seven states pulled the plug on beach access. Massachusetts, New York, New Jersey, Illinois, Michigan, Washington, and California all reported closures or swim advisories tied to dangerous bacteria levels. Massachusetts was hit hardest, with nearly 20 beaches shuttered and some trackers showing 37 closures in a single afternoon. Los Angeles County issued eight separate water contact alerts along its coastline.

The problem did not stop at Independence Day. By Labor Day weekend, warnings stretched from Crystal River, Florida, all the way up to Ogunquit, Maine. Both major summer holidays were bookended by the same ugly reality: the water at many of America’s most popular beaches was too dirty to enter safely. Families who planned beach trips got signs and orange flags instead of a swim.

What Is Actually Making the Water Dangerous

The main culprit is a bacteria called enterococcus, which scientists use as a marker for fecal contamination. When its count tops 104 colony-forming units per 100 milliliters of water, health officials are required to act. E. coli triggers closures too, at 235 colony-forming units per 100 milliliters. Both bacteria enter the water the same way: heavy rain overwhelms sewer systems and storm drains, flushing human and animal waste directly into lakes and coastal waters. The bacteria themselves are not new. The infrastructure failing to contain them is just old and overloaded.

Southern California carries an added burden. Beaches near the U.S.-Mexico border, including those around Coronado and San Diego, have faced repeated closures tied to raw sewage flowing north from the Tijuana River. That crisis has kept some stretches of Southern California coastline off-limits for weeks or even months at a stretch, season after season. It is a binational infrastructure failure with American families paying the price every summer.

This Is Not a New Problem — It Is a Growing One

The Environmental Working Group tracked at least 116 U.S. beach closures from toxic algae or fecal bacteria during one recent spring and summer period, with health warnings at 162 more. A 2025 Environment America report found that 61% of tested beaches along the coasts and Great Lakes showed unsafe contamination levels at least once in 2024. That is not a bad year. That is a broken system running on borrowed time and patchwork repairs.

Federal data from 2024 recorded more than 7,500 beach advisories or closures along U.S. coastal and Great Lakes beaches. Think about that number. More than 7,500 times, Americans showed up to swim and were told the water was not safe. Aging sewer infrastructure, combined with heavier rain events, keeps pushing that number higher. The technology to test water and post warnings has improved. The pipes carrying sewage away from those same beaches have not kept pace.

What Swimmers Should Do Before They Go

The simplest move is to check before you go. State health departments publish beach water quality trackers online, and many update daily. If water looks discolored, smells bad, or sits near a storm drain outlet, stay out regardless of whether a sign is posted. Rain in the 24 to 48 hours before your visit is a red flag. Bacteria levels spike fast after a storm and can take several days to drop back to safe levels. Children, older adults, and anyone with a weakened immune system face the highest risk from swallowing contaminated water.