Fair

Charles River

021, MA

Water Quality

Updated Dec 8

Escherichia coli (E. coli) Bacteria216.0 MPN/100mL

Common fecal coliform bacteria indicating possible sewage contamination. EPA recreational limit: <126 MPN/100mL.

Water Temperature1.4 °C

Water temperature directly affects fish metabolism and activity. Optimal range varies by species.

Tn (mg/L) (Water Quality Parameter)5.4

Tn (mg/L) - a water quality measurement. Contact local authorities for specific safety guidelines.

Tp (mg/L) (Water Quality Parameter)0.1

Tp (mg/L) - a water quality measurement. Contact local authorities for specific safety guidelines.

Nh3 (mg/L) (Water Quality Parameter)0.1

Nh3 (mg/L) - a water quality measurement. Contact local authorities for specific safety guidelines.

Water Temperature1.4 °C

Water temperature directly affects fish metabolism and activity. Optimal range varies by species.

Enterococcus Bacteria41.0 CFU/100mL

Fecal indicator bacteria found in intestines. Used to assess water safety for swimming. EPA limit: <35 CFU/100mL.

Ortho P (mg/L) (Water Quality Parameter)0.0

Ortho P (mg/L) - a water quality measurement. Contact local authorities for specific safety guidelines.

Escherichia coli (E. coli) Bacteria216.0 MPN/100mL

Common fecal coliform bacteria indicating possible sewage contamination. EPA recreational limit: <126 MPN/100mL.

recency/

coverage/

parameters present/