Is Southworth, WA tap water safe?
The short answer
None of the 3 utilities serving Southworth has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
West Sound Utility District #1, which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOA at 5.7 ppt, above EPA’s new limit, which takes effect in 2029.
The water from West Sound Utility District #1 is soft to moderately hard depending on the source, 40 to 81 mg/L (2.3 to 4.8 grains per gallon). How Washington’s water compares.
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 Southworth’s ZIP codes, from EPA’s estimates.
- Open report
West Sound Utility District #1
Washington · serves 28,930 people · about 2,700 in Southworth
1 result above EPA’s new limit, which takes effect in 2029 and 2 results above the health goal. The worst: PFOA at 5.7 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to moderately hard depending on the source, 40 to 81 mg/L (2.3 to 4.8 grains per gallon).
No health-based violations since 2016
- Open report
Manchester Water District
Washington · serves 10,475 people · about 1,300 in Southworth
1 result above the health goal. The worst: Arsenic at 3.3 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 51 to 94 mg/L (3 to 5.5 grains per gallon).
No health-based violations since 2016
- Open report
Port Orchard Water Dept
Washington · serves 15,355 people · about 1,100 in Southworth
1 result above the health goal. The worst: Arsenic at 2.6 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 50 to 81 mg/L (2.9 to 4.7 grains per gallon).
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in West Sound Utility District #1’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOA, Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOA, Arsenic, Lead
Water testing near Southworth
The 3 labs Washington certifies closest to Southworth, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Seattle-King Co Dept of Public Health Lab
Seattle, WA · about 12 miles
Certified for bacteria
MCL Food Testing
Seattle, WA · about 13 miles
Certified for bacteria
Friedman & Bruya, Inc.
Seattle, WA · about 13 miles
Certified for lead and copper, metals
ZIP codes in Southworth
Which ZIP codes are in Southworth: 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 Southworth
Other towns in Kitsap County with a page of their own.
What to do next
- Read West Sound Utility District #1’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water