The water in the pond is tested over the course of the swimming season, for both E.Coli and phosphate. The water quality has been good and the sample is always “found to be within acceptable levels for swimming & fishing.”
Max EPA recommended level for E.Coli is 235 (drinking water should be under 1), no recommendation for phosphate.
Date (2025) E.Coli Phosphate June 30, 2025 <10 MPN/100 ml 0.038 mg/L
Date (2024) E.Coli Phosphate June 4, 2024 <10 MPN/100 ml 0.034 mg/L
Date (2023) E.Coli Phosphate June 26, 2023 10 CFU/100 ml 0.043 mg/L
Date (2022) E.Coli Phosphate June 27, 2022 10 CFU/100 ml 0.06 mg/L August 8, 2022 132 CFU/100 ml 0.08 mg/L
Date (2021) E.Coli Phosphate June 1, 2021 5 CFU/100 ml 0.33 mg/L July 21, 2021 10 CFU/100 ml 0.01 mg/L
Date (2020) E.Coli Phosphate June 2, 2020 4 CFU/100 ml 0.09 mg/L July 21, 2020 60 CFU/100 ml 0.07 mg/L
Date (2019) E.Coli Phosphate July 1, 2019 40 CFU/100 ml 0.03 mg/L August 5, 2019 10 CFU/100 ml 0.05 mg/L
Date (2018) E.Coli Phosphate June 7, 2018 10 CFU/100 ml 0.09 mg/L July 6, 2018 5 CFU/100 ml 0.09 mg/L August 6, 2018 20 CFU/100 ml 0.09 mg/L
Date (2017) E.Coli Phosphate June 9, 2017 5 CFU/100 ml 0.08 mg/L July 7, 2017 20 CFU/100 ml 0.07 mg/L August 11, 2017 30 CFU/100 ml 0.07 mg/L
Date (2016) E.Coli Phosphate May 25, 2016 4 CFU/100 ml 0.07 mg/L June 29, 2016 4 CFU/100 ml 0.05 mg/L July 29, 2016 6 CFU/100 ml 0.08 mg/L
Date (2015) E.Coli Phosphate late May, 2015 10 CFU/100 ml 0.05 mg/L June 30, 2015 10 CFU/100 ml 0.02 mg/L Aug. 7, 2015 Acceptable Acceptable
Echo Hill North 