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Tap water quality report

Tieton Water Dept City of

EPA monitoring tested this supplier for 68 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
9
detected
1,475
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
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
66
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1998-08-01 → 1998-08-31
MCL Health-based Archived 1998-08-01 → 1998-08-31
MCL Health-based Archived 1998-08-01 → 1998-08-31
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2017-07-01
MR Monitoring Resolved 2017-01-01 → 2019-12-31
Other Monitoring Resolved 2016-07-01
Other Monitoring Resolved 2013-07-01
MR Monitoring Resolved 2011-01-01 → 2019-12-31
MR Monitoring Resolved 2011-01-01 → 2019-12-31

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
3670 µg/L 37%
of the EPA limit 10000 µg/L
 28/30 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Nitrate-Nitrite
3670 µg/L 37%
of the EPA limit 10000 µg/L
 10/11 SYR4 2012–2019
Fluoride
203 µg/L 5.1%
of the EPA limit 4000 µg/L
 2/2 SYR4 2018–2019
Arsenic
6.1 µg/L 61%
of the EPA limit 10 µg/L
 1/1 SYR4 2018
Barium
12.44 µg/L 0.6%
of the EPA limit 2000 µg/L
 1/1 SYR4 2018
Copper
0.6100 µg/L 0%
of the EPA limit 1300 µg/L
 1/1 SYR4 2018
Chromium
1.02 µg/L 1%
of the EPA limit 100 µg/L
 1/1 SYR4 2018
Selenium
0.9000 µg/L 1.8%
of the EPA limit 50 µg/L
 1/1 SYR4 2018
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Bennett Osborne

Frequently asked questions about Tieton Water Dept City of

Is Tieton Water Dept City of tap water safe to drink?

EPA monitoring detected 9 contaminants in Tieton Water Dept City of'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 Water Dept City of's water?

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

How many people does Tieton Water Dept City of serve?

Tieton Water Dept City of reports serving 1,475 people in Washington, per its EPA record.

Has Tieton Water Dept City of had any water quality violations?

The EPA has 66 violations on file for Tieton Water Dept City of, 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.