We are currently in need of volunteers to help us collect bacteria samples for the 2023 summer season! Volunteering for this program entails traveling to local sites, collecting water samples, and delivering them to the lab at Anne Arundel Community College. The samples need to be collected every Thursday morning. Please contact Mairin ([email protected]) for more details.
During the summer, we monitor bacteria levels at various community waterfront areas. We aim to provide timely public health information to participating communities and help identify times when it may be inadvisable to swim. Knowledge is key in our fight for healthier, clean waters. The season runs from Memorial Day to Labor Day. The 2023 season cost is $500. Contact Mairin (ma[email protected]) to sign up. To pay online, please click here. Please write “Bacteria Testing” and list your community in the comments on the online donation form so we can track your payment appropriately.
Monitoring results can be tracked at The Swim Guide, which includes the health of waters monitored by Arundel Rivers as well as other organizations.

Past Bacteria Sampling Results:
- 2022 South, West, and Rhode bacteria data
- 2021 South, West, and Rhode bacteria data
- 2020 South, West, and Rhode bacteria data
- 2019 South, West, and Rhode bacteria data
- 2018 South River bacteria data
- 2017 South River bacteria data
- 2016 South River bacteria data
- 2015 South River bacteria data
- 2014 South River bacteria data
- 2013 South River bacteria data
- 2012 South River bacteria data