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Tap water quality report

Tieton Hills Water Co

EPA monitoring tested this supplier for 52 contaminants and detected 4. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

52
contaminants tested
4
detected
75
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Yakima

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.

3
health-based violations
32
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1999-09-01 → 1999-09-30
MCL Health-based Archived 1999-09-01 → 1999-09-30
MCL Health-based Archived 1999-09-01 → 1999-09-30
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2019-01-01
MR Monitoring Resolved 2008-01-01 → 2010-12-31
MR Monitoring Resolved 2008-01-01 → 2010-12-31
MR Monitoring Resolved 2008-01-01 → 2010-12-31
MR Monitoring Resolved 2008-01-01 → 2010-12-31
MR Monitoring Resolved 2008-01-01 → 2010-12-31

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
7900 µg/L 79%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Nitrate-Nitrite
7900 µg/L 79%
of the EPA limit 10000 µg/L
 9/9 SYR4 2012–2019
Combined Uranium
17 µg/L 57%
of the EPA limit 30 µg/L
 1/1 SYR4 2012
48 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromodichloromethaneBromoformChlorobenzeneCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Bennett Osborne

Frequently asked questions about Tieton Hills Water Co

Is Tieton Hills Water Co tap water safe to drink?

EPA monitoring detected 4 contaminants in Tieton Hills Water Co'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 Tieton Hills Water Co's water?

EPA monitoring detected Nitrate, Lead, Nitrate-Nitrite, Combined Uranium. The full list with the level and data source for each is above.

How many people does Tieton Hills Water Co serve?

Tieton Hills Water Co reports serving 75 people in Washington, per its EPA record.

Has Tieton Hills Water Co had any water quality violations?

The EPA has 32 violations on file for Tieton Hills Water Co, of which 3 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.