Somerville, Massachusetts

Somerville, Massachusetts Somerville, Massachusetts

Water Quality in Somerville, Massachusetts

Watershed: Charles River – Frontal Boston Harbor

What is the water quality like in Somerville, MA?

Let’s dive deeper into what’s in Somerville water.

What’s in Somerville water?

Here are the top 5 chemical compounds in your water and what health issues they can potentially cause:

  1. Bromodichloromethane – Potential effect: Cancer
  2. Chloroform – Potential effect: Cancer
  3. Haloacetic acids – Potential effect: Cancer
  4. Radium – Potential effect: Cancer
  5. Total trihalomethanes – Potential effect: Cancer

These are five of the 18 contaminants analyzed by the Environmental Working Group (

8 of these contaminants are rated as exceeding EWG Health Guidelines.

See the What Can You Do? section below for all of the contaminants you can filter out and how to do it.

Where does Somerville’s water come from?

Somerville’s water comes from the Charles River – Frontal Boston Harbor watershed.

All 16 EPA assessed water sources in the Charles River – Frontal Boston Harbor watershed are in Impaired or Unknown condition. These include:

  • Boston Inner Harbor – Impaired
  • Brookline Reservoir – Unknown
  • Chandler Pond – Impaired
  • Charles River – Impaired
  • Chestnut Hill Reservoir – Unknown
  • Dorchester Bay – Impaired
  • Halls Pond – Unknown
  • Jamaica Pond – Impaired
  • Muddy River – Impaired
  • Neponset River – Impaired
  • Pleasure Bay – Impaired
  • Scarboro Golf Course Pond – Impaired
  • Stony Brook – Unknown

Ideally, a water source would be rated in Good condition.

Whether a water source is in Impaired or Good condition refers to the quality of these uses:

  1. Drinking Water
  2. Aquatic Life
  3. Fish and Shellfish Consumption
  4. Recreation

Learn more from How’s My Waterway

See below for what you can do to improve Somerville’s water.

Conclusion – What Can You Do?

Information about water quality can be surprising.

But there’s no reason to lose hope. There are things you can do in your household as well as things you can do at a community level.

In Your Household:

*Chlorination is an effective method of disinfecting/treating drinking water. You can then use a water filter to reduce the effects of chlorination byproducts to get the safest, cleanest water possible.

In Your Community:

Contact your local government officials and put pressure on them to invest in cleaner waterways and upgraded city water filtration and treatment.

Go to: to find contact information for your local officials.

Water Quality in Other Massachusetts Cities

Massachusetts Water Quality Page

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