Bothell, WA: 5 Violations - Home Safety 100/100
4 ZIP codes · 7 water systems · Updated
ZipCheckup grade for Bothell: A.
No federal data flags a major home-safety concern for this ZIP.
Water systems serving Bothell hold a strong EPA compliance record - the city places among the better-performing areas in WA with few health-based violations on file.
How Bothell Compares
Data: EPA SDWIS
Bothell Water: The Quick Version
- Your city's water systems recorded 5 violations in the past 5 years.
- Average lead level: 0.0031 mg/L.
- Homes built before 1986: 33% - older plumbing may contain lead solder.
- Estimated remediation: $1,567 per household.
- CDC health risk index: 9.78.
Water Systems Serving Bothell
3 water utilities share the residential service territory in Bothell, WA - out of 7 total systems in federal records.
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Overview
We track home safety data for 4 ZIP codes in Bothell, Washington (population ~139,818), covering 7 community water systems serving approximately 536,031 people region-wide. The EPA snapshots used for this build directly map water systems to 3 of 4 ZIP codes.
3 of 3 ZIP codes 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 Bothell: A (100/100)
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
Bothell water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0031 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): 4 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 4 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | 2 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 3 | 2 |
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98021 | A | 5 | 0 | Alderwood Water District |
| 98012 | A | 2 | 0 | Alderwood Water District |
| 98011 | A | 1 | 0 | City of Bothell Water |
All ZIP Codes in Bothell
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.
CDC Health Data for Bothell
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
Key Contaminants Detected in Bothell
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Bothell's Housing Stock?
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
For a city with a median build year of 1994, Bothell carries a housing profile that straddles the 1986 federal ban on lead solder in plumbing. Neither predominantly new nor predominantly old, the stock presents a moderate aggregate risk environment - with individual risk varying sharply depending on when and where a specific home was built.
Most homes in Bothell 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.
Bothell: Remediation Cost in Perspective
Within the Bothell market, estimated remediation claims a small portion of typical property equity - the financial burden is proportionally low.
Remediation costs in Bothell are relatively low compared to home values. The $1,033–$2,300 estimated range is a small fraction of median property value. Home values are 90% above the Washington average.
Protecting Children from Lead in Bothell
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.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 33% of Bothell stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Bothell
Historical NFIP data for Bothell contains 24 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $23,932. Among ZIP codes with claim records, 33% 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>$1,567</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 Bothell, WA