Tacoma, Washington

Water Quality in Tacoma, Washington

Watershed: City of Tacoma – Frontal Commencement Bay

What is the water quality like in Tacoma, WA?

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

What’s in Tacoma water?

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

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

These are five of the 21 contaminants analyzed by the Environmental Working Group (ewg.org).

11 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 Tacoma’s water come from?

Tacoma’s water comes from the City of Tacoma – Frontal Commencement Bay watershed.

All 43 EPA assessed water sources in the City of Tacoma – Frontal Commencement Bay watershed are in Impaired or Unknown condition. These include:

• Commencement Bay – 23 segments
• Dalco Passage and East Passage – 8 segments
• Puget Sound – 6 segments
• Tacoma Narrows – 6 segments

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 Tacoma’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:

• Use Berkey filters with activated carbon to filter out 18 of the 21 contaminants in your drinking water.
  • Berkey filters can also remove up to 99.99% of Lead in Tacoma water.
  • Brita can filter 11 contaminants (and Lead depending on the filter).
  • Note: We may receive a commission if you decide to purchase filters through links on this page.
• To filter out 18 of the 21 contaminants in your whole house, consider a Reverse Osmosis water filtration system for your home.
  • These are more expensive than pitchers to purchase, but can be more effective.
  • They have the benefit of filtering out heavy hitters like:
    • Arsenic – health effects in water
    • Bromodichloromethane – health risks in drinking water
    • Bromoform
    • Chloroform – side effects
    • Chromium (total)
    • Dibromochloromethane
    • Dichloroacetic acid
    • Fluoride
    • Haloacetic acids – chlorination byproduct*
    • Hexavalent chromium – health effects
    • Mercury
    • Monochloroacetic acid
    • Nitrate
    • Nitrite
    • Strontium
    • Total trihalomethanes – byproduct of chlorination*
    • Trichloroacetic acid
    • Trichloroethylene – Classified as a “known or probable carcinogen.” (carcinogen: cancer-causing)

*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: http://www.cityoftacoma.org/government to find contact information for your local officials.

Water Quality in Other Washington Cities

Washington Water Quality Page