Historical Water Quality
Passed water quality tests at least 95% of the time
This status is based on the latest sample, taken on July 29th, 2025 Swim Guide - Main updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on July 29th, 2025 at 13:28.
Gunpowder State Park - Hammerman is sampled Bi-Weekly from June 1st to September 15th.
About Gunpowder State Park - Hammerman
Current Weather
Source Information
Environmental Health Services (EHS) collects water quality samples bi-weekly from April - November for Tidal Beaches. Swim Guide checks for the latest information daily, Monday - Friday during the swimming season. A tidal beach is marked Green when the geometric mean of 5 samples is less than 35 MPN (Most Probable Number) colonies of Enterococci / 100 ml of water A tidal beach is marked Red when the geometric mean of 5 samples is greater than 35 MPN of Enterococci / 100 ml of water. A tidal beach is marked Grey when there is no current or reliable monitoring information available. Maryland Healthy Beaches notification system has partnered with Google Earth to send updates. However, Swim Guide prefers to contact the Health Department directly as we are unable to determine the monitoring schedule Google Earth uses.
Beaches Near This One
SEE All