Is Lapush, WA Tap Water Safe to Drink?
Graded B+ — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
81.5/100
waterverge.com Lapush, WA — Water Quality Report
Lapush's drinking water received a grade of B+ (81.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 885 residents using groundwater.
Lead levels were measured at 2.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 130 violations on record, including 2 health-based violations. 3 remain unresolved.
What to know about Lapush's water
Lapush ranks #130 out of 294 cities in Washington for water quality, placing it mid-range in the state.
Lapush 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.
As a small community water system, Lapush may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Lapush, WA water safe to drink?
Lapush's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (81.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 885 residents using groundwater (wells).
Recent water quality updates for Lapush
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Lapush's water quality assessment. Grade: B+ (81.5/100).
Federal disaster declaration (FEMA DR-3629). Flood event — may have impacted local water infrastructure.
Contaminants: Revised Total Coliform Rule, Chlorine.
Contaminants: Revised Total Coliform Rule.
Contaminants: Chlorine.
Federal disaster declaration (FEMA DR-4650). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Lapush's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Lapush's water system has 130 total violations on record, including 2 health-based violations. 3 remain unresolved. 4 violations were issued in the last 5 years.
Flood & environmental risk
Clallam County has experienced 10 federally declared disasters since 1979. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Bogachiel River.
Where does Lapush's water come from?
Lapush's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 885 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Bogachiel River (river).
What Lapush residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Lapush'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.
Lapush'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
Flood & disaster history
Clallam County has experienced 10 federally declared disasters since 1979. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Lapush'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. | 2.0 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.55 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Lapush compares by contaminant
Explore where Lapush ranks among all Washington cities for specific contaminants.
Water source & infrastructure
Where Lapush's water comes from
Lapush'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 885 people through 1 water system.
Water bodies near Lapush
Lapush is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Lapush
| System Name | PWSID | Population | Source |
|---|---|---|---|
| QUILEUTE WATER SYSTEM | 105300016 | 885 | GW |
How Lapush compares
Full Washington rankings →Lapush's score of 81.5/100 is above the average of 53/100 among major Washington cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Washington rankings →Learn more about your water
Guides and resources related to Lapush's water quality findings.
Frequently asked questions
Is Lapush, WA tap water safe to drink?
Lapush's water quality earned a grade of B+ (81.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #130 out of 294 cities tested in Washington.
What contaminants are in Lapush's water?
Lead was measured at 2.0 ppb (90th percentile). 130 violations are on record.
How is Lapush'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 Lapush?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lapush's water come from?
Lapush's water is sourced from Groundwater. The city has 1 water system serving approximately 885 residents.
What health violations has Lapush's water system had?
Lapush has 2 health-based violations on record. The most recent violation was recorded in November 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
Is Lapush's groundwater at risk of contamination?
Lapush 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 130 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 Lapush's water compare to other cities?
Lapush ranks #130 out of 294 cities in Washington (better than 56% of state cities) and #7456 out of 15744 cities nationally (53th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Lapush's small water system affect quality?
Lapush's system serves approximately 885 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 130 violations on record.