Sequim, WA: PFAS Found in Water - Home Safety 83/100
1 ZIP code · 5 water systems · Updated
ZipCheckup grade for Sequim: B.
This ZIP has a few items worth a quick check.
Within Sequim, WA, the available records add up to an upper-tier grade; that grade describes records, not the water at a given faucet.
How Sequim Compares
Data: EPA SDWIS
What You Should Know About Sequim Water
- Your city's water systems recorded 107 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0065 mg/L.
- Homes built before 1986: 44% - older plumbing may contain lead solder.
- Estimated remediation: $800 per household.
- Health risk index (ZipCheckup composite of CDC data): 13.71.
Who Supplies Your Water in Sequim
Among 5 systems linked to Sequim, WA, the 3 biggest by population served appear below.
- B
- B
- B
Overview
We track home safety data for 1 ZIP code in Sequim, Washington, covering 5 community water systems serving approximately 31,225 people. 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. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Sequim: B (83/100)
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
Sequim water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0065 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
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Rule | Reporting | 26 | 1 |
| Revised Total Coliform Rule | Microbiological | 10 | 1 |
| 1,2,4-Trichlorobenzene | Organic | 8 | 1 |
| cis-1,2-Dichloroethylene | Organic | 8 | 1 |
| Dichloromethane | Organic | 8 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98382 | B | 107 | 1 | City of Sequim |
All ZIP Codes in Sequim
- 98382 [B] - 107 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 Sequim
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Sequim Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Sequim
With 44% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Plumbing materials follow installation dates, not medians. Sequim records a median build year of 1999, and a meaningful share of its homes date from before the 1986 federal lead restrictions.
Most homes in Sequim were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Sequim Homeowners
In Sequim, estimated remediation comes to 1% or less of the median home value.
Estimated remediation costs in Sequim can be compared with local home values. The $450–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 1% below the Washington average.
Lead Exposure Risk for Children in Sequim
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Sequim
Historical NFIP data for Sequim contains 45 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $26,666. Among ZIP codes with claim records, 0% 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 $800 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 Sequim, WA