Snoqualmie, WA: 3 Violations — 74/100 (2026)
1 ZIP code · 11 water systems · Updated 2026-06-03
Unlike many cities its size in WA, Snoqualmie keeps health-based violation rates low — systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Snoqualmie Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Snoqualmie Water
- Your city's water systems recorded 3 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Homes built before 1986: 24% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 8.82.
Who Supplies Your Water in Snoqualmie
Water supply in Snoqualmie, WA follows a divided structure: 3 utilities account for the largest share of residential service out of 11 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
Overview
We track water quality and home safety data for 1 ZIP code in Snoqualmie, Washington, covering 11 community water systems serving approximately 16,061 people.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Snoqualmie: B (74/100)
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
Snoqualmie water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead | Inorganic | 2 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 2 | 1 |
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98065 | B | 3 | 0 | City of North Bend |
All ZIP Codes in Snoqualmie
- 98065 [B] — 3 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
Updated daily.
Health Outcomes in Snoqualmie
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 Snoqualmie Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Snoqualmie
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
Banned from residential plumbing in 1986, lead solder was a near-universal feature of copper plumbing before that cutoff. In Snoqualmie, where the median build year is 2006, the majority of housing falls into the post-ban category — though the older fraction of the stock still carries the residual risk that comes with pre-1986 pipe and solder materials.
Most homes in Snoqualmie 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 Snoqualmie Homeowners
In Snoqualmie, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Snoqualmie are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 90% above the Washington average.
Lead Exposure Risk for Children in Snoqualmie
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 aggregate data alone gives a clean picture for Snoqualmie — system samples below the federal action mark and 24% pre-rule housing — yet that math averages many service connections. A one-tap draw gives the only direct read for a specific home.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Snoqualmie
Snoqualmie's NFIP record reflects high flood exposure — 1185 claims spanning a long history of significant events, with 100% of ZIP codes in FEMA-designated zones. High flood frequency increases the probability of water quality disruptions at each point in the supply chain: treatment facilities, transmission infrastructure, and private wells all face elevated stress risk when flooding is a recurring feature rather than a rare exception.
Snoqualmie has a significant flood history with 1,185 FEMA flood insurance claims on record, averaging $19,297 per claim. With 100% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
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 Snoqualmie, WA