Is Monroe, WA tap water safe?
The short answer
1 of the 9 utilities serving Monroe has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records: Thunderbird Terrace Water System.
Monroe Water System, which serves the most people here, has nothing above a health goal in EPA’s and Washington’s records. That data covers what its report lists, not everything.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Monroe’s ZIP codes, from EPA’s estimates.
- Open report
Monroe Water System
Washington · serves 23,467 people · about 1,200 in Monroe
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Highland Water District
Washington · serves 3,121 people · about 310 in Monroe
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Cross Valley Water District
Washington · serves 24,695 people · under 100 in Monroe
2 results above the health goal. The worst: Arsenic at 4.7 ppb, above the health goal.
No health-based violations since 2016
- Open report
Peoples Creek Water System
Washington · serves 76 people · under 100 in Monroe
1 result above the limit’s level with no violation recorded and 2 results above the health goal. The worst: Total trihalomethanes (TTHM) at 91.2 ppb, above the limit’s level, no violation.
No health-based violations since 2016
- Open report
Friar Creek Water System
Washington · serves 135 people · under 100 in Monroe
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Thunderbird Terrace Water System
Washington · serves 75 people · under 100 in Monroe
1 result above the legal limit and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 47.2 ppb, above the legal limit. Hardness: soft, 26 mg/L (1.5 grains per gallon).
1 health-based violation since 2016
- Open report
Seventh Heaven Country Club
Washington · serves 48 people · under 100 in Monroe
2 results above the health goal. The worst: Arsenic at 3.1 ppb, above the health goal.
No health-based violations since 2016
- Open report
Woods Creek Water District
Washington · serves 25 people · under 100 in Monroe
1 result above the health goal. The worst: Lead at 0.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Fern Bluff Estates
Washington · serves 30 people · under 100 in Monroe
2 results above the health goal. The worst: Arsenic at 1.1 ppb, above the health goal. Hardness: moderately hard, 85 mg/L (5 grains per gallon).
No health-based violations since 2016
Water testing near Monroe
The 3 labs Washington certifies closest to Monroe, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Everett Environmental Laboratory
Everett, WA · about 15 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
OnSite Environmental, Inc.
Redmond, WA · about 16 miles
Certified for lead and copper, metals, minerals and other inorganics
Precision Analytical Laboratories, LLC
Everett, WA · about 18 miles
Certified for lead and copper, metals, minerals and other inorganics
ZIP codes in Monroe
Which ZIP codes are in Monroe: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Washington State Department of Ecology, Lab Accreditation Program, environmental laboratories accredited for drinking water analyses; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Monroe
Other towns in Snohomish County with a page of their own.
What to do next
- Read Monroe Water System’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water