Health ❯ Public Health ❯ Environmental Health ❯ Water Quality

Bacterial Contamination

Los Angeles County Issues Ocean Water Warnings as Heat Wave Drives Crowds

County testing detected bacteria above state safety limits, prompting no‑swim advisories and ongoing daily monitoring to protect public health.

Los Angeles County Issues Water Warnings for Seven Beaches

Haverhill Sewer Breaks Dump Millions of Gallons Into Merrimack River

Potomac Named America’s Most Endangered River After Sewage Spill and Data‑Center Boom

L.A. County Warns Against Ocean Water Contact at Six Beaches After Bacteria Spikes

LA County Updates Beach Bacteria Advisories During Heat Wave

San Diego Closes Beaches From Imperial Beach to Coronado After Storm Runoff Raises Bacteria

Potomac Sewage Spill Repairs Set for Nine Months as Bulkhead Work Advances

Labor Day Beachgoers Confront Widespread No-Swim Warnings as Fecal Bacteria Closes Popular Shores

High Bacteria Levels Close Beaches Nationwide Ahead of Independence Day

Surfrider Report Reveals 80% of U.S. Beaches Exceed Health Standards in 2024