Heavy Rain Affected Water Quality at Some Sites

As is often the case, rain affected water quality at several sites this week. Mobile Baykeeper’s SWIM samples were taken on Wednesday when storms moved through Mobile and Baldwin counties. Remember to use caution in and around the water following heavy rain as sewage overflows and stormwater runoff may cause high levels of bacteria. Check out the map and table below or visit our websitefor details. 

We encourage the public to enjoy our natural resources while remaining abundantly cautious during the Covid-19 outbreak. Visit our resource page with ideas about where to enjoy the outdoors during this time!

SWIM Map

Thank you to our supporters! We exceeded our goal and are now sampling at Point Clear, Battles Wharf, and a new site near County Rd 1. Sponsor a SiteBecome a Member

SWIM Table

About Our Data:

During a normal SWIM season, ADEM/ADPH (25 sites) and Mobile Baykeeper (11 sites) test weekly. Mobile Baykeeper is testing during the Covid-19 outbreak. ADEM/ADPH is currently evaluating their testing schedule and may make adjustments. We will update this information as we know more. Please don’t hesitate to contact us with questions in the meantime!

At the 11 Mobile Baykeeper sites, except Fish River at Bohemian Park, we test for enterococci, a bacteria that best indicates fecal contamination in salty or brackish water. In Fish River at Bohemian Park, which is our only site with no tidal influence, we test for E. Coli. We base our SWIM evaluations on the EPA threshold for swimming advisories, which is 104 mpn/100 mL for enterococci and 235 mpn/100 mL for E. Coli.

Please remember to use caution in and around the water following heavy rain as sewage overflows and stormwater runoff may contain high levels of bacteria. In cases of high bacteria levels, avoid introducing open wounds to the water. If you see something of concern, please report it via the Water Rangers app


Our tests do not indicate the presence of Vibrio vulnificus, a flesh-eating bacteria that naturally occurs in warm, brackish waters. Our “safe” level refers to the level of Enterococci or E. coli, bacteria that indicate fecal contamination. Be advised that other threats may exist. Avoid entering the water with open wounds. For more information on BEACH testing and how the SWIM program works please visit our website.