PlainWater
States → Washington

PIONEER

PWS ID: WA5304387 · Olympia, Washington 98502

PIONEER serves 84 people in Olympia, Washington using Groundwater water sources. It has 2,002 recorded EPA violations, including 2 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: PIONEER

PIONEER is a private-owned community water system that delivers drinking water to 84 residents in Olympia, Washington (Thurston County) through 43 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 2,002 total violations for this system , of which 2 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2,000 monitoring and reporting violations are on file. The most recent violation on record dates to 2007.

The most frequently cited contaminant at this system is Pentachlorophenol, recorded in 54 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. PIONEER's 2,002 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
84
Total Violations
2,002
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
43
County
Thurston
School/Daycare
No
MCL Violations
2
Monitoring Violations
2,000
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Pentachlorophenol MR 54 2007
1,2,4-Trichlorobenzene MR 42 2007
cis-1,2-Dichloroethylene MR 42 2007
o-Dichlorobenzene MR 42 2007
p-Dichlorobenzene MR 42 2007
Vinyl chloride MR 42 2007
1,1-Dichloroethylene MR 42 2007
trans-1,2-Dichloroethylene MR 42 2007
1,2-Dichloropropane MR 42 2007
1,1,2-Trichloroethane MR 42 2007
Tetrachloroethylene MR 42 2007
Toluene MR 42 2007
Ethylbenzene MR 42 2007
Styrene MR 42 2007
Endrin MR 42 2007
BHC-GAMMA MR 42 2007
Methoxychlor MR 42 2007
Toxaphene MR 42 2007
Di(2-ethylhexyl) adipate MR 42 2007
Simazine MR 42 2007
Di(2-ethylhexyl) phthalate MR 42 2007
Hexachlorocyclopentadiene MR 42 2007
Atrazine MR 42 2007
LASSO MR 42 2007
Heptachlor epoxide MR 42 2007
Benzo(a)pyrene MR 42 2007
Dinoseb MR 42 2007
2,4,5-TP MR 42 2007
Carbofuran MR 42 2007
ETHYLENE DIBROMIDE MR 42 2007

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for PIONEER.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WA5304387 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects PIONEER under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2007 Pentachlorophenol MR 54 SDWIS / WA5304387 / 2326
2007 1,2,4-Trichlorobenzene MR 42 SDWIS / WA5304387 / 2378
2007 cis-1,2-Dichloroethylene MR 42 SDWIS / WA5304387 / 2380
2007 o-Dichlorobenzene MR 42 SDWIS / WA5304387 / 2968
2007 p-Dichlorobenzene MR 42 SDWIS / WA5304387 / 2969
2007 Vinyl chloride MR 42 SDWIS / WA5304387 / 2976
2007 1,1-Dichloroethylene MR 42 SDWIS / WA5304387 / 2977
2007 trans-1,2-Dichloroethylene MR 42 SDWIS / WA5304387 / 2979
2007 1,2-Dichloropropane MR 42 SDWIS / WA5304387 / 2983
2007 1,1,2-Trichloroethane MR 42 SDWIS / WA5304387 / 2985
2007 Tetrachloroethylene MR 42 SDWIS / WA5304387 / 2987
2007 Toluene MR 42 SDWIS / WA5304387 / 2991
2007 Ethylbenzene MR 42 SDWIS / WA5304387 / 2992
2007 Styrene MR 42 SDWIS / WA5304387 / 2996
2007 Endrin MR 42 SDWIS / WA5304387 / 2005

How PIONEER Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric PIONEER Washington avg Federal benchmark
Total violations 2,002 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 2 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 84 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is PIONEER water safe to drink? ▼
PIONEER (PWS ID: WA5304387) has 2002 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 84 people using Groundwater sources.
How many people does PIONEER serve? ▼
PIONEER serves 84 people in Olympia, Washington. It is a Private-owned system using Groundwater water sources with 43 service connections.
What type of violations does PIONEER have? ▼
PIONEER has 2,002 total violations: 2 health-based violations (MCL exceedances or treatment failures), 2,000 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in PIONEER water? ▼
No PFAS testing data is available for PIONEER under the EPA's UCMR5 monitoring program.
What water source does PIONEER use? ▼
PIONEER uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Explore PlainWater

Water in Washington

All systems in state
All States

Water quality by state
Contaminants

PFAS & other pollutants
Guides

Understanding water quality

Related Data for Washington

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial