Duvall, WA: PFAS Found in Water - Home Safety 85/100
1 ZIP code · 5 water systems · Updated
ZipCheckup grade for Duvall: A.
No federal data flags a major home-safety concern for this ZIP.
Throughout Duvall and across its water systems, EPA compliance data for WA shows above-average performance - violations are minimal, none of the tracked systems have recorded repeated MCL exceedances in recent cycles, and the safety picture has held steady across multiple reporting periods.
How Duvall Compares
Data: EPA SDWIS
What You Should Know About Duvall Water
- Your city's water systems recorded 45 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 29% - older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 8.82.
Who Supplies Your Water in Duvall
In Duvall, WA, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 5 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
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Overview
We track home safety data for 1 ZIP code in Duvall, Washington (population ~11,712), covering 5 community water systems serving approximately 245,290 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Duvall: A (85/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Duvall water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 10 | 1 |
| PFOA | PFAS | 4 | 1 |
| PFNA | PFAS | 4 | 1 |
| Dichloroacetic Acid | Disinfection Byproducts | 4 | 1 |
| Bromodichloromethane | Disinfection Byproducts | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98019 | A | 45 | 0 | City of Duvall |
All ZIP Codes in Duvall
- 98019 [A] - 45 violations
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Duvall
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Duvall Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Duvall
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Duvall's housing stock skews relatively recent, with a median build year of 1995. Homes constructed after 1986 avoid the lead-soldered copper joints that were standard before the federal ban - reducing aggregate risk from plumbing as a contamination pathway.
Most homes in Duvall were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Duvall Homeowners
When estimated remediation is placed alongside median property values in Duvall, the resulting ratio is low - a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in Duvall are relatively low compared to home values. The $1,200–$2,500 estimated range is a small fraction of median property value. Home values are 60% above the Washington average.
Lead Exposure Risk for Children in Duvall
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Where pre-rule stock represents a smaller fraction of the inventory - 29% across Duvall - the structural drivers of household exposure run thinner. Aggregate readings under the federal benchmark reinforce that picture, with one-home draws remaining the only direct measurement for a specific address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Duvall
Historical NFIP data for Duvall contains 72 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $22,950. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$1,800</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Duvall, WA