Mukilteo, WA Water Safety: 87/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Throughout Mukilteo 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 Mukilteo Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Mukilteo Residents
- Homes built before 1986: 38% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 10.74.
Mukilteo's Water Providers
3 water utilities share the residential service territory in Mukilteo, WA — out of 4 total systems in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Mukilteo, Washington (population ~21,312), covering 4 community water systems serving approximately 441,054 people region-wide.
No EPA violations recorded across any ZIP codes in Mukilteo — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mukilteo: A (87/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Mukilteo water systems draw from: Groundwater, Surface water.
Lead & Copper
- Lead data: not yet available for Mukilteo
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 98275 | A | Mukilteo Water & Wastewater Distr | 25,182 |
All ZIP Codes in Mukilteo
- 98275 [A]
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
Updated daily.
Mukilteo Community Health Snapshot
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
Mukilteo Infrastructure Age
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
Reading the housing data for Mukilteo, with a median build year of 1998, reveals a community where neither old nor new construction dominates. That balanced profile means lead-solder-era plumbing is present throughout a meaningful portion of the residential inventory — with risk concentrated in properties built before 1986 and most acute in those that predate 1970.
Most homes in Mukilteo 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.
How Remediation Costs Compare in Mukilteo
In Mukilteo, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Mukilteo are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 78% above the Washington average.
Mukilteo: Lead Risk & Vulnerable Populations
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.
Locally, 38% of Mukilteo homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Mukilteo: Flood History & Water Damage Risk
Although Mukilteo's flood history doesn't reach high-severity thresholds, NFIP data documents 5 claims and FEMA maps place 100% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Mukilteo has a moderate flood history with 5 FEMA claims averaging $1,738 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Mukilteo, WA