Tap WaterIndex

← Washington

Tap water quality report

Pioneer

EPA monitoring tested this supplier for 71 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
5
detected
84
people served
2
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Thurston

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
2,002
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2006-08-01 → 2006-08-31
MCL Health-based Archived 2006-06-01 → 2006-06-30
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
410 µg/L 4.1%
of the EPA limit 10000 µg/L
 14/14 SYR4 2013–2019
Lead
0.00080 mg/L 5.3%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Chloroform
0.6000 µg/L
No EPA limit set
 2/3 SYR4 2014–2018
TTHM
1.2 µg/L 1.5%
of the EPA limit 80 µg/L
 2/2 SYR4 2017–2018
Bromodichloromethane
0.6000 µg/L
No EPA limit set
 1/3 SYR4 2014–2018
66 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEndrinEthylbenzeneFluorideHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BOB BOWER

Frequently asked questions about Pioneer

Is Pioneer tap water safe to drink?

EPA monitoring detected 5 contaminants in Pioneer's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Pioneer's water?

EPA monitoring detected Nitrate, Lead, Chloroform, TTHM, Bromodichloromethane. The full list with the level and data source for each is above.

How many people does Pioneer serve?

Pioneer reports serving 84 people in Washington, per its EPA record.

Has Pioneer had any water quality violations?

The EPA has 2002 violations on file for Pioneer, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.