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Tap water quality report

Yakima Water Division City of

EPA monitoring tested this supplier for 104 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
22
detected
112,858
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Surface 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
57
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Archived 1995-01-01 → 1995-01-31
TT Health-based Archived 1994-12-01 → 1994-12-31
TT Health-based Archived 1994-11-01 → 1994-11-30
Other Monitoring Resolved 2024-07-01
MR Monitoring Resolved 2020-01-01 → 2020-12-31
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 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
TTHM
78.8 µg/L 99%
of the EPA limit 80 µg/L
 236/236 SYR4 2012–2019
Chloroform
73.9 µg/L
No EPA limit set
 235/255 SYR4 2012–2019
Bromodichloromethane
6 µg/L
No EPA limit set
 202/231 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
53.9 µg/L 90%
of the EPA limit 60 µg/L
 191/241 SYR4 2012–2019
Trichloroacetic Acid
34.7 µg/L
No EPA limit set
 183/241 SYR4 2012–2019
Dichloroacetic Acid
21.9 µg/L
No EPA limit set
 180/240 SYR4 2012–2019
Nitrate
600 µg/L 6%
of the EPA limit 10000 µg/L
 66/80 SYR4 2012–2019
Dibromochloromethane
2.6 µg/L
No EPA limit set
 60/246 SYR4 2012–2019
Nitrate-Nitrite
600 µg/L 6%
of the EPA limit 10000 µg/L
 33/40 SYR4 2012–2019
Fluoride
860 µg/L 22%
of the EPA limit 4000 µg/L
 17/17 SYR4 2012–2019
Arsenic
3.6 µg/L 36%
of the EPA limit 10 µg/L
 16/17 SYR4 2012–2019
Barium
28.77 µg/L 1.4%
of the EPA limit 2000 µg/L
 16/17 SYR4 2012–2019
Copper
14.56 µg/L 1.1%
of the EPA limit 1300 µg/L
 15/16 SYR4 2012–2019
Thallium, Total
0.9600 µg/L 48%
of the EPA limit 2 µg/L
 14/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2024
Chromium
3.66 µg/L 3.7%
of the EPA limit 100 µg/L
 11/17 SYR4 2012–2019
Lead
0.8800 µg/L 5.9%
of the EPA limit 15 µg/L
 8/16 SYR4 2012–2019
Monochloroacetic Acid
3.4 µg/L
No EPA limit set
 6/249 SYR4 2012–2019
Antimony, Total
0.2800 µg/L 4.7%
of the EPA limit 6 µg/L
 4/17 SYR4 2012–2019
Bromoform
1.1 µg/L
No EPA limit set
 2/260 SYR4 2012–2019
Selenium
1.62 µg/L 3.2%
of the EPA limit 50 µg/L
 2/17 SYR4 2012–2019
Nitrite
50 µg/L 5%
of the EPA limit 1000 µg/L
 1/40 SYR4 2012–2019
82 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-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Daniel Tiliano

Frequently asked questions about Yakima Water Division City of

Is Yakima Water Division City of tap water safe to drink?

EPA monitoring detected 22 contaminants in Yakima Water Division 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 Yakima Water Division 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 Yakima Water Division City of serve?

Yakima Water Division City of reports serving 112,858 people in Washington, per its EPA record.

Has Yakima Water Division City of had any water quality violations?

The EPA has 57 violations on file for Yakima Water Division 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.