Olympia, WA: 22 Violations — 93/100 (2026)
11 ZIP codes · 12 water systems · Updated 2026-06-03
For households in Olympia, WA water data shows a consistently above-average safety picture.
How Olympia Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Olympia, WA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Olympia's 11 ZIP codes.
Key Facts for Olympia Residents
- Your city's water systems recorded 22 violations in the past 5 years.
- Average lead level: 0.0042 mg/L.
- Estimated remediation: $2,014 per household.
- CDC health risk index: 11.82.
Olympia's Water Providers
Federal records list 12 water systems tied to Olympia, WA. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track water quality and home safety data for 11 ZIP codes in Olympia, Washington (population ~198,909), covering 12 community water systems serving approximately 310,201 people region-wide.
11 of 11 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Olympia: A (93/100)
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
Olympia water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0042 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)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 11 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 24 | 11 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 98501 | A | 2 | 0 | City of Olympia |
| 98502 | A | 2 | 0 | City of Olympia |
| 98504 | A | 2 | 0 | City of Olympia |
| 98505 | A | 2 | 0 | City of Olympia |
| 98506 | A | 2 | 0 | City of Olympia |
| 98507 | A | 2 | 0 | City of Olympia |
| 98508 | A | 2 | 0 | City of Olympia |
| 98512 | A | 2 | 0 | City of Olympia |
| 98513 | B | 2 | 0 | Lacey Water Department |
| 98516 | A | 2 | 0 | City of Olympia |
All ZIP Codes in Olympia
- 98501 [A] — 2 violations
- 98502 [A] — 2 violations
- 98504 [A] — 2 violations
- 98505 [A] — 2 violations
- 98506 [A] — 2 violations
- 98507 [A] — 2 violations
- 98508 [A] — 2 violations
- 98512 [A] — 2 violations
- 98513 [B] — 2 violations
- 98516 [A] — 2 violations
- 98599 [A] — 2 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.
Olympia 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
What's in Olympia's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Olympia
The household financial picture for Olympia homeowners is proportionally favorable — addressing documented issues claims a small slice of equity, and the cost-to-value ratio puts this area well within the manageable tier.
Remediation costs in Olympia are relatively low compared to home values. The $1,329–$2,900 estimated range is a small fraction of median property value. Home values are 4% above the Washington average.
Olympia: 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.
Lead risk in Olympia appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Olympia: Flood History & Water Damage Risk
How does Olympia's flood record connect to local water quality? The NFIP documents 164 claims — enough to signal recurring events — and 64% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Olympia has a moderate flood history with 164 FEMA claims averaging $16,334 per payout. 64% 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>$2,014</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 Olympia, WA