Is Suquamish, WA Tap Water Safe to Drink?
Graded B+, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
80.8/100
waterverge.com Suquamish, WA — Water Quality Report
Suquamish's drinking water received a grade of B+ (80.8 out of 100), indicating good water quality. The city's 3 water systems serve approximately 653 residents using groundwater.
Lead levels were measured at 6.0 ppb (90th percentile), which is within EPA limits but above recommended levels. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 128 violations on record, including 4 health-based violations. 7 remain unresolved.
What to know about Suquamish's water
Suquamish ranks #132 out of 294 cities in Washington for water quality, placing it mid-range in the state.
Suquamish relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
While lead levels are within EPA limits, they are above the recommended 5 ppb threshold that health organizations consider ideal. A point-of-use filter adds an extra layer of protection.
As a small community water system, Suquamish may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 7 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Suquamish, WA water safe to drink?
Suquamish's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (80.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 3 water systems serve approximately 653 residents using groundwater (wells).
Recent water quality updates for Suquamish
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Suquamish's water quality assessment. Grade: B+ (80.8/100).
Contaminants: Chlorine.
Contaminants: Combined Uranium, Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228).
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-3227). Coastal Storm event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1172). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Suquamish's water supply.
Within EPA limits but above the American Academy of Pediatrics recommended level of 1 ppb. An NSF 53-certified filter provides additional protection.
Violation history
Suquamish's water system has 128 total violations on record, including 4 health-based violations. 7 remain unresolved. 7 violations were issued in the last 5 years.
Flood & environmental risk
Kitsap County has experienced 7 federally declared disasters since 1974. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Suquamish's water come from?
Suquamish's drinking water comes from groundwater (wells), supplied by 3 water systems serving approximately 653 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Suquamish residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Suquamish's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Suquamish's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Suquamish
Industrial polluters nearby
Reported releases to surface water by facilities near Suquamish, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
NAVAL BASE KITSAP BANGOR - RANGE ACTIVITIES SILVERDALE, WA983151087 | — | — | 5.4 mi |
POULSBO READY MIX PLANT POULSBO, WA98370 | — | — | 1.3 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Suquamish
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- NAVAL UNDERSEA WARFARE ENGINEERING STATION 4 WASTE AREAS2.7 mi
- BANGOR ORDNANCE DISPOSAL USNAVY5.9 mi
- BANGOR NAVAL SUBMARINE BASE6.1 mi
- WYCKOFF CO EAGLE HARBOR7.9 mi
Source: EPA Superfund National Priorities List
Flood & disaster history
Kitsap County has experienced 7 federally declared disasters since 1974. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Suquamish's water supply, we recommend the following filter types.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 6.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Suquamish compares by contaminant
Explore where Suquamish ranks among all Washington cities for specific contaminants.
Water source & infrastructure
Where Suquamish's water comes from
Suquamish's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by native american ownership and serves approximately 653 people through 3 water systems.
Water systems serving Suquamish
| System Name | PWSID | Population | Source |
|---|---|---|---|
| SACKMAN | 105300031 | 500 | GW |
| INDIANOLA | 105300085 | 78 | GWP |
| WEE WUN | 105338109 | 75 | GWP |
How Suquamish compares
Full Washington rankings →Suquamish's score of 80.8/100 is above the average of 53/100 among major Washington cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Washington rankings →About Suquamish, WA
Learn more about your water
Guides and resources related to Suquamish's water quality findings.
Frequently asked questions
Is Suquamish, WA tap water safe to drink?
Suquamish's water quality earned a grade of B+ (80.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #132 out of 294 cities tested in Washington.
What contaminants are in Suquamish's water?
Lead was measured at 6.0 ppb (90th percentile). 128 violations are on record.
How is Suquamish's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Suquamish?
While lead levels are within EPA limits, a filter adds extra protection. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Suquamish's water come from?
Suquamish's water is sourced from Groundwater. The city has 3 water systems serving approximately 653 residents.
What health violations has Suquamish's water system had?
Suquamish has 4 health-based violations on record. The most recent violation was recorded in September 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 7 violations remain unresolved.
Is Suquamish's groundwater at risk of contamination?
Suquamish uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 128 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Suquamish's water compare to other cities?
Suquamish ranks #132 out of 294 cities in Washington (better than 55% of state cities) and #7730 out of 15744 cities nationally (51th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.