May 29, 2025 Bacteria Report

5/29/25 Bacteria Results are in.

We had 23 sites fail this week: 15 on the South River, 6 on the West and Rhode Rivers, and 2 on the Mainstem Bay.

This is a test for enterococcus, an indicator of E. coli. Samples are collected Thursday mornings and processed by Anne Arundel Community College.

Please note that bacteria levels can increase after major rain events. Arundel Rivers follows EPA guidelines and the recommended threshold of 104cfu/100mL for recreational swimming. Please remember to follow the golden rules of swimming.

-Don’t swim after a major rain event

-Don’t swim with any open cuts or wounds

-Always check SwimGuide.org before swimming

Learn more about our program at arundelrivers.org