Colony Beach Water Quality Test Results

Recent Testing Results: (Testing will resume June 2024)
DATE: August 31, 2023 

  • Colony Beach   97 MPN/100ml enterococci bacteria ("flag" bacteria) Retesting in progress

Colony Beach water temperature: 19.8 degrees C, or 67 degrees F

Maine's EPA-approved Beach Action Value (or single sample maximum safety threshold) for enterococci in marine waters is 104 MPN/100 mL. Enterococci bacteria results greater than or equal to 104 MPN/100ml  and human bacteria greater than or equal to 525 copies/100ml are considered unsafe levels for water contact. 
DateColony Beach
August 31, 202397 MPN/100ml enterococci bacteria
August 30, 2023109 MPN/100ml enterococci bacteria
August 28, 202310 MPN/100ml enterococci bacteria
August 23, 202310 MPN/100ml enterococci bacteria
August 21, 2023120 MPN/100ml enterococci bacteria
August 16, 202310 MPN/100ml enterococci bacteria
August 14, 202320 MPN/100ml enterococci bacteria
August 10, 202310 MPN/100ml enterococci bacteria
August 9, 2023332 MPN/100ml enterococci bacteria
August 7, 202310 MPN/100ml enterococci bacteria
August 2, 202352 MPN/100ml enterococci bacteria
July 31, 202341 MPN/100ml enterococci bacteria
July 26, 2023<10 MPN/100ml enterococci bacteria
July 24, 202310 MPN/100ml enterococci bacteria
July 19, 202320 MPN/100ml enterococci bacteria
July 17, 2023279 MPN/100ml enterococci bacteria
July 12, 202330 MPN/100ml enterococci bacteria
July 10, 2023<10 MPN/100ml enterococci bacteria
July 6(retest)63 MPN/100ml enterococci bacteria
July 5, 2023528 MPN/100ml enterococci bacteria
June 28, 202341 MPN/100ml enterococci bacteria
June 26, 2023<10 MPN/100ml enterococci bacteria
June 21, 202310 MPN/100ml enterococci bacteria
June 14, 2023<10 MPN/100ml enterococci bacteria
June 12, 202310 MPN/100ml enterococci bacteria
June 7, 202330 MPN/100ml enterococci bacteria
June 5, 202341 MPN/100ml enterococci bacteria
May 31, 2023<10 MPN/100ml enterococci bacteria