2023 Bathing Beach Water Test Results

The Braintree Health Department considers an individual bathing beach water sample with an enterococci count less than 104 acceptable for bathing/swimming in marine water.

Counts greater than 104 indicate the water is unacceptable for swimming/bathing and the beach will be posted as such. A 5-sample Enterococci Geometric Mean value greater than 35 also indicates the water is unacceptable for swimming/bathing.

The Braintree Health Department considers an individual bathing beach water sample with an E. coli count less than 235 acceptable for bathing/swimming in fresh water.

Counts greater than 235 indicate the water is unacceptable for swimming/bathing and the beach will be posted as such. A 5-sample E. coli Geometric Mean value greater than 126 also indicates the water is unacceptable for swimming/bathing.

N/A means not available.

*Rain event occurred within 24 hours of sample collection 

Smith Beach

Sample Date Enterococci 5-Sample Geomean Acceptable for Bathing?
6-14-23 121 N/A No
6-20-23 31 N/A Yes
6-29-23 95 N/A Yes
7-6-23 51 N/A Yes
7-12-23 41 59.49 No
7-18-23 241 68.25 No
7-25-23 <10 54.45 No
8-1-23 110 56.29 No
8-10-23 84 64.97 No
8-17-23 <10 34.38 Yes
8-23-23 108 55.34 No
8-29-23 97 62.69 No

Sunset Lake

Sample Date E-Coli 5-Sample Geomean Acceptable for Bathing?
6-14-23 5 N/A Yes
6-20-23 164 N/A Yes
6-29-23 32 N/A Yes
7-6-23 30 N/A Yes
7-12-23 16 26.31 Yes
7-18-23 25 36.29 Yes
7-25-23 10 20.74 Yes
8-1-23 12 17.05 Yes
8-10-23 60 19.58 Yes
8-17-23 76 26.74 Yes
8-23-23 24 26.53 Yes
8-29-23 80 40.21 Yes