Lynnwood, WA: 12 Violations — 80/100 (2026)
4 ZIP codes · 5 water systems · Updated 2026-06-03
For households in Lynnwood, WA water data shows a consistently above-average safety picture.
How Lynnwood Compares
Data: EPA SDWIS Last verified: 2026-06-03
Lynnwood Water: The Quick Version
- Your city's water systems recorded 12 violations in the past 5 years.
- Homes built before 1986: 46% — older plumbing may contain lead solder.
- Estimated remediation: $1,400 per household.
- CDC health risk index: 10.74.
Water Systems Serving Lynnwood
Residential water service in Lynnwood, WA is divided among 3 separate utilities, drawn from 5 systems on file with federal regulators.
Overview
We track water quality and home safety data for 4 ZIP codes in Lynnwood, Washington (population ~113,197), covering 5 community water systems serving approximately 353,811 people region-wide.
4 of 4 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Lynnwood: B (80/100)
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
Lynnwood water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Lynnwood
- 0 ZIP codes 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 |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 10 | 4 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98036 | B | 3 | 0 | Alderwood Water District |
| 98037 | B | 3 | 0 | Alderwood Water District |
| 98046 | B | 3 | 0 | Alderwood Water District |
| 98087 | B | 3 | 0 | Alderwood Water District |
All ZIP Codes in Lynnwood
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.
CDC Health Data for Lynnwood
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 Lynnwood
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Lynnwood's Housing Stock?
With 46% 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
What does a median build year of 1994 mean for water safety in Lynnwood? It means the housing stock straddles two key plumbing thresholds: the 1986 federal ban on lead solder in copper plumbing, and the pre-1970 era when lead pipes were commonly installed for service lines. A meaningful share of homes predates one or both of those cutoffs, creating varied risk levels across the city's housing inventory.
Most homes in Lynnwood 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.
Lynnwood: Remediation Cost in Perspective
How much of a Lynnwood home's value does documented remediation represent? A small fraction — the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.
Remediation costs in Lynnwood are relatively low compared to home values. The $933–$2,033 estimated range is a small fraction of median property value. Home values are 46% above the Washington average.
Protecting Children from Lead in Lynnwood
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.
Reading the local data together points toward a structural gap that matters more here than in low-exposure communities. 46% of Lynnwood stock comes from the pre-rule era, and citywide monitoring either approaches or sits beyond the federal benchmark under Lead and Copper Rule sampling. A baseline kit fits the routine-diligence category, with certified filtration available via retailer networks where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Lynnwood
Taken together, Lynnwood's 52 NFIP flood insurance claims and 75% FEMA flood zone coverage place it in the moderate range of exposure. That middle position has specific implications for water quality. The contamination pathways that flooding can open — surface water overwhelming treatment facility intake, floodwaters infiltrating private wells, distribution pressure changes creating backflow — are not constant risks in a moderate-exposure community. But they do become active during significant flood events, and the claim record here indicates enough of those events to make flood timing an occasional factor in local water quality conversations.
Lynnwood has a moderate flood history with 52 FEMA claims averaging $20,513 per payout. 75% 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>$1,400</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 Lynnwood, WA