Snohomish, WA: 1 Health Violation - Home Safety 98/100
3 ZIP codes · 8 water systems · Updated
ZipCheckup grade for Snohomish: A.
No federal data flags a major home-safety concern for this ZIP.
Tap water monitoring data for Snohomish shows a consistently clean picture in WA - few violations on record, compliance well above the median.
How Snohomish Compares
Data: EPA SDWIS
What You Should Know About Snohomish Water
- Your city's water systems recorded 14 violations in the past 5 years.
- Average lead level: 0.0038 mg/L.
- Homes built before 1986: 42% - older plumbing may contain lead solder.
- Estimated remediation: $1,367 per household.
- CDC health risk index: 10.74.
Who Supplies Your Water in Snohomish
Snohomish, WA draws its residential water from 3 separate providers among the 8 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
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Overview
We track home safety data for 3 ZIP codes in Snohomish, Washington (population ~66,933), covering 8 community water systems serving approximately 662,291 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 3 ZIP codes.
2 of 2 ZIP codes 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 Snohomish: A (98/100)
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
Snohomish water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0038 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 3 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 13 | 2 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 9 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 7 | 2 |
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98290 | A | 13 | 1 | Sno Pud 1 - Lake Stevens |
| 98296 | A | 5 | 0 | Silver Lake Water & Sewer District |
All ZIP Codes in Snohomish
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 Snohomish
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 Snohomish Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Snohomish
With 42% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Some cities skew heavily toward one construction era; Snohomish does not. The median build year of 1990 reflects a housing stock where older and newer homes share the market in meaningful proportions. That mixed profile means the city carries moderate aggregate plumbing-era risk - with older homes, particularly those built before 1986, representing the portion of the stock where lead-soldered joints may still be present.
Most homes in Snohomish 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 Snohomish Homeowners
In Snohomish, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Snohomish are relatively low compared to home values. The $900–$2,067 estimated range is a small fraction of median property value. Home values are 86% above the Washington average.
Lead Exposure Risk for Children in Snohomish
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.
If 42% of the Snohomish inventory comes from before the federal ban on lead-bearing solder - and if utility samples sit at or near 0.015 mg/L - the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Snohomish
Historical NFIP data for Snohomish contains 395 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $20,275. Among ZIP codes with claim records, 67% 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>$1,367</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 Snohomish, WA