D
54

Poor Water Quality

Olympia, WA 98513

Thurston County · Population served: 111,690 · Data updated March 2026

Water Systems Serving This Area

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NISQUALLY-LESCHI & WEST NISQUALLY
Groundwater · Pop. 3,200
PWSID: 105300014
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CUYAMACA
Groundwater · Pop. 375
PWSID: 105300089
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DELPHI DAUBEL
Groundwater · Pop. 29
PWSID: WA5318650
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CLOISTER
Groundwater · Pop. 29
PWSID: WA5327091
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LACEY WATER DEPARTMENT
Groundwater · Pop. 103,755
PWSID: WA5343500

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.1
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

4 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFPeA18.8 pptNo standardUnregulated
PFHxA9.8 pptNo standard400 pptUnregulated
PFBS4.2 ppt2000 ppt100 pptBelow limit
PFHxS3.1 ppt10 ppt10 pptBelow limit

Violation History (Last 5 Years)

74Total (5yr)
2Health-Based
53Major

Water Quality Summary

Understanding Your Water in Olympia

Tap water quality in Olympia, Washington (98513) receives an overall grade of D (Poor) with a score of 54 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 22 points below the Washington state average of 76. Compared to the national average (75), this area scores significantly lower. The area is served by 6 water systems providing water to approximately 111,690 people, using groundwater sources. Testing has found elevated levels of Lead that warrant attention. PFAS testing detected 4 compounds, all currently below EPA limits. Over the past 5 years, water systems here have accumulated 74 violations, including 2 health-based violations.

Your Score 54/100 D
vs State 22 pts below Washington avg (76)
vs National 21 pts below national avg (75)

What a Grade D Means

A score of 54/100 signals poor water quality in Olympia, WA. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Tap water in Olympia, Washington receives a grade of D (Poor) with a score of 54/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.

ZIP code 98513 is served by 6 water systems using groundwater sources, providing water to approximately 111,690 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead was detected at 3.1 ppb in Olympia, Washington. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

4 PFAS compounds were detected in water serving Olympia, Washington, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Olympia, Washington have received 74 violations in the last 5 years, including 2 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, PFAS), residents in Olympia, Washington should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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