Is Adna, WA Tap Water Safe to Drink?
Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
90.1/100
waterverge.com Adna, WA — Water Quality Report
Adna's drinking water received a grade of A (90.1 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 2,389 residents using surface water.
Lead levels were measured at 0.0 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 85 violations on record, including 9 health-based violations. 2 remain unresolved.
What to know about Adna's water
Adna ranks #43 out of 294 cities in Washington for water quality, placing it above average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Adna may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Adna, WA water safe to drink?
Adna's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (90.1/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 2,389 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Adna
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Adna's water quality assessment. Grade: A (90.1/100).
Federal disaster declaration (FEMA DR-3629). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4650). Flood event — may have impacted local water infrastructure.
Contaminants: Revised Total Coliform Rule.
Contaminants: Surface Water Treatment Rule.
Contaminants: Surface Water Treatment Rule.
Key contaminant findings
Based on the most recent EPA sampling data for Adna's water supply.
Well within EPA limits.
Violation history
Adna's water system has 85 total violations on record, including 9 health-based violations. 2 remain unresolved.
Flood & environmental risk
Lewis County has experienced 10 federally declared disasters since 1991. 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 Chehalis River, Newaukum River, Skookumchuck River.
Where does Adna's water come from?
Adna's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 2,389 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Chehalis River (river), Newaukum River (river), Skookumchuck River (river).
What Adna residents can do
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.
Adna'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
Lewis County has experienced 10 federally declared disasters since 1991. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Adna compares by contaminant
Explore where Adna ranks among all Washington cities for specific contaminants.
Water source & infrastructure
Where Adna's water comes from
Adna's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by private ownership and serves approximately 2,389 people through 1 water system.
Water bodies near Adna
Adna is located near 3 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Adna
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BOISTFORT VALLEY | WA5307610 | 2,389 | SW |
How Adna compares
Full Washington rankings →Adna's score of 90.1/100 is above the average of 53/100 among major Washington cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Washington rankings →About Adna, WA
Wikipedia →Adna is an unincorporated community located in Lewis County, Washington.
Learn more about your water
Guides and resources related to Adna's water quality findings.
Explore water quality across Lewis
Frequently asked questions
Is Adna, WA tap water safe to drink?
Adna's water quality earned a grade of A (90.1/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #43 out of 294 cities tested in Washington.
What contaminants are in Adna's water?
Lead was measured at 0.0 ppb (90th percentile). 85 violations are on record.
How is Adna'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 Adna?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Adna's water come from?
Adna's water is sourced from Surface water. The city has 1 water system serving approximately 2,389 residents.
What health violations has Adna's water system had?
Adna has 9 health-based violations on record. The most recent violation was recorded in July 2019. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
How does Adna's water compare to other cities?
Adna ranks #43 out of 294 cities in Washington (better than 85% of state cities) and #2406 out of 15744 cities nationally (85th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Adna's small water system affect quality?
Adna's system serves approximately 2,389 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 85 violations on record.