Is Cheney City of Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Spokane

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1992-02-01 → 1992-02-29
MCL	Health-based	Archived	1992-02-01 → 1992-02-29
MCL	Health-based	Archived	1992-02-01 → 1992-02-29
MR	Monitoring	Resolved	2025-01-01 → 2025-12-31
Other	Monitoring	Resolved	2017-07-01
MR	Monitoring	Resolved	2014-07-01 → 2014-09-30
MR	Monitoring	Resolved	2014-07-01 → 2014-09-30
MR	Monitoring	Archived	1992-02-01 → 1992-02-29
MR	Monitoring	Archived	1991-11-01 → 1991-11-30
MR	Monitoring	Archived	1979-10-01 → 1979-10-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	17.9915 µg/L 22% of the EPA limit 80 µg/L worst single sample: 25.48 µg/L	58/58	SYR4	2012–2019
Chloroform	11.4 µg/L No EPA limit set worst single sample: 19 µg/L	57/69	SYR4	2012–2019
Bromodichloromethane	4.26 µg/L No EPA limit set worst single sample: 5.3 µg/L	53/65	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	5.92 µg/L 9.9% of the EPA limit 60 µg/L worst single sample: 6.76 µg/L	37/57	SYR4	2012–2018
Trichloroacetic Acid	4.1 µg/L No EPA limit set worst single sample: 5 µg/L	36/59	SYR4	2012–2019
Dibromochloromethane	3.84 µg/L No EPA limit set worst single sample: 5.6 µg/L	33/65	SYR4	2012–2019
Dichloroacetic Acid	2.685 µg/L No EPA limit set worst single sample: 3.2 µg/L	22/60	SYR4	2012–2019
Lead	0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L	14/14	LCR	2024
Nitrate	2700 µg/L 27% of the EPA limit 10000 µg/L	10/62	SYR4	2012–2019
Lithium	18.9 µg/L No EPA limit set	10/10	UCMR-5	2024
Barium	61.15 µg/L 3.1% of the EPA limit 2000 µg/L worst single sample: 61.6 µg/L	7/7	SYR4	2012–2019
Fluoride	1081.75 µg/L 27% of the EPA limit 4000 µg/L worst single sample: 1210 µg/L	6/7	SYR4	2012–2019
Arsenic	0.6700 µg/L 6.7% of the EPA limit 10 µg/L worst single sample: 0.7000 µg/L	3/7	SYR4	2012–2019
Dibromoacetic Acid	0.6770 µg/L No EPA limit set worst single sample: 0.6900 µg/L	3/60	SYR4	2012–2019
Antimony, Total	0.4000 µg/L 6.7% of the EPA limit 6 µg/L	2/7	SYR4	2012–2019
Beryllium, Total	0.2000 µg/L 5% of the EPA limit 4 µg/L	2/7	SYR4	2012–2019
Bromoform	1.835 µg/L No EPA limit set worst single sample: 1.91 µg/L	2/66	SYR4	2012–2019
Copper	268.088 µg/L 21% of the EPA limit 1300 µg/L worst single sample: 282 µg/L	2/7	SYR4	2012–2019
Cyanide	2.5 µg/L 1.3% of the EPA limit 200 µg/L	2/7	SYR4	2012–2019
Combined Radium (-226 And -228)	3.173 pCi/L 63% of the EPA limit 5 pCi/L worst single sample: 3.21 pCi/L	2/2	SYR4	2015
Selenium	0.7900 µg/L 1.6% of the EPA limit 50 µg/L worst single sample: 0.8000 µg/L	2/7	SYR4	2012–2019
Thallium, Total	0.1000 µg/L 5% of the EPA limit 2 µg/L	2/7	SYR4	2012–2019
Lead	0.9000 µg/L 6% of the EPA limit 15 µg/L	1/5	SYR4	2012–2019
Nitrate-Nitrite	470 µg/L 4.7% of the EPA limit 10000 µg/L	1/7	SYR4	2012–2019

80 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-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Kristopher Brewer

Frequently asked questions about Cheney City of

Is Cheney City of tap water safe to drink?

EPA monitoring detected 24 contaminants in Cheney 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 Cheney City of's water?

EPA monitoring detected TTHM, Chloroform, Bromodichloromethane, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Cheney City of serve?

Cheney City of reports serving 16,954 people in Washington, per its EPA record.

Has Cheney City of had any water quality violations?

The EPA has 18 violations on file for Cheney 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.