Is Port Townsend, WA Tap Water Safe to Drink?
Port Townsend tap water meets federal Safe Drinking Water Act standards but 1 of 1 ZIP code show detections above EPA health guidelines, primarily for PFTrDA. A certified filter is recommended for households that want an additional layer of protection.
Where Does Port Townsend Get Its Water?
Water in Port Townsend, WA is provided by 2 public water systems: PORT TOWNSEND CITY OF and QUIMPER.
How Is Port Townsend Tap Water Treated?
Treated water is disinfected using free chlorine and on-site generated disinfectant. Treatment includes membrane filtration.
What's in Port Townsend Tap Water?
The following contaminants were detected most frequently in Port Townsend public water systems. 1 of 1 ZIP codes showed detections above EPA health guidelines.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| PFTrDA | 0.007 µg/L | 0.007 µg/L | 1 ZIP | Above guideline |
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| HFPO-DA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| 11Cl-PF3OUdS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Port Townsend
Based on EPA monitoring data, 1 of 1 ZIP codes in Port Townsend have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Port Townsend Tap Water
Is Port Townsend tap water safe to drink?
Port Townsend tap water meets Safe Drinking Water Act requirements but 1 of 1 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.
What contaminants are in Port Townsend tap water?
The most commonly detected contaminants in Port Townsend water systems include: PFTrDA, lithium, HFPO-DA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Port Townsend get its drinking water?
Port Townsend receives water from 2 public water systems, including PORT TOWNSEND CITY OF.
Do I need a water filter in Port Townsend?
If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.
How often is Port Townsend tap water tested?
Public water systems in Port Townsend are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-06-09.
Tap water reports by ZIP in Port Townsend
- 98368 - Port Townsend tap water report Higher concern
Water utilities serving Port Townsend, WA
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- PORT TOWNSEND CITY OFLooks OK
Also covers / overlaps with
- Discovery Bay-Port Townsend CCD, WA · Township
- Port Hadlock-Irondale, WA · CDP
- Quilcene Bay-Brinnon CCD, WA · Township