Is it protected to swim in Delaware creeks What residents must know

A brand new report on air pollution in Pennsylvania’s waterways exhibits that Delaware’s creeks could not all the time be protected for swimming.

The report from PennEnvironment examined greater than 600 websites round Pennsylvania’s waterways for fecal indicator micro organism, and a few of these websites hover across the Delaware border upstream in Delaware River and the Brandywine, White Clay and Red Clay Creeks.

The report confirmed that every of these waterways had unsafe ranges of fecal micro organism at occasions. The report particularly highlighted the Delaware River and the Brandywine Creek as doubtlessly unsafe for swimming. The Delaware River had greater micro organism ranges in direction of Philadelphia.

The Brandywine Creek was examined in Chadds Ford, Pennsylvania, proper earlier than it flows by means of Delaware into the Christina River.

The Brandywine exceeded protected and wholesome ranges of E. Coli one out of 5 days examined in 2024 and 2025. Swimming in that creek is at your individual danger, in response to the National Park Service’s web site for the First State National Historical Park, and other people ought to keep away from swallowing its water or submerging your head underwater with out blocking their nostril.

The Red Clay Creek and White Clay Creek didn’t fare a lot better. The Red Clay exceeded protected ranges of fecal micro organism air pollution three out of 5 check days simply north of Yorklyn. The White Clay Creek was examined northwest of Newark, and exceeded protected ranges three out of 9 check days in 2024 and 2025.

The ranges are snapshots of water high quality at a given time, and ranges could fluctuate day-to-day.

Friends of White Clay Creek Preserve say on their web site that swimmers ought to abstain from the creek for 3 days after heavy rainfall.

The report typically blames outdated sewage and septic methods, growth sprawl, and “factory farming” for the air pollution.

“Contamination from sources such as sewage overflows, polluted stormwater runoff, failing septic systems and manure from industrial livestock operations can carry pathogens into waterways that threaten public health,” the report says.