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Tap water quality report

Ellensburg Water Dept

EPA monitoring tested this supplier for 104 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
13
detected
20,900
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Kittitas

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
14
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1997-09-01 → 1997-09-30
MCL Health-based Archived 1997-09-01 → 1997-09-30
MCL Health-based Archived 1997-09-01 → 1997-09-30
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
660 µg/L 6.6%
of the EPA limit 10000 µg/L
worst single sample: 920 µg/L
134/144 SYR4 2012–2019
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Barium
20.7 µg/L 1%
of the EPA limit 2000 µg/L
worst single sample: 24 µg/L
12/12 SYR4 2013–2018
Fluoride
812.5 µg/L 20%
of the EPA limit 4000 µg/L
worst single sample: 840 µg/L
12/12 SYR4 2013–2018
Nitrate-Nitrite
583.5 µg/L 5.8%
of the EPA limit 10000 µg/L
worst single sample: 600 µg/L
12/12 SYR4 2013–2018
Chromium
9.5 µg/L 9.5%
of the EPA limit 100 µg/L
worst single sample: 16 µg/L
11/12 SYR4 2013–2018
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 9/12 SYR4 2013–2018
TTHM
1.5 µg/L 1.9%
of the EPA limit 80 µg/L
 4/4 SYR4 2012–2013
Bromodichloromethane
0.5000 µg/L
No EPA limit set
 3/36 SYR4 2012–2019
Dibromochloromethane
0.5000 µg/L
No EPA limit set
 3/35 SYR4 2012–2019
Gross Beta Particle Activity
2.757 pCi/L
No EPA limit set
worst single sample: 2.83 pCi/L
3/11 SYR4 2013–2019
Chloroform
0.5000 µg/L
No EPA limit set
 2/36 SYR4 2012–2019
Copper
6 µg/L 0.5%
of the EPA limit 1300 µg/L
 1/12 SYR4 2013–2018
91 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Mike Helgeson

Frequently asked questions about Ellensburg Water Dept

Is Ellensburg Water Dept tap water safe to drink?

EPA monitoring detected 13 contaminants in Ellensburg Water Dept'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 Ellensburg Water Dept's water?

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

How many people does Ellensburg Water Dept serve?

Ellensburg Water Dept reports serving 20,900 people in Washington, per its EPA record.

Has Ellensburg Water Dept had any water quality violations?

The EPA has 14 violations on file for Ellensburg Water Dept, 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.