Is Kelso City of Tap Water Safe? Quality Report

Water source: Ground water under surface influence
Ownership: Local government
Counties served: Cowlitz

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
TT	Health-based	Archived	2000-01-01 → 2000-01-31
MR	Monitoring	Resolved	2018-12-01 → 2018-12-31
Other	Monitoring	Resolved	2011-07-01
MR	Monitoring	Archived	1992-01-01 → 1992-01-31
MR	Monitoring	Archived	1979-10-01 → 1979-10-31
MR	Monitoring	Archived	1979-10-01 → 1979-10-31
MR	Monitoring	Archived	1979-10-01 → 1979-10-31
MR	Monitoring	Archived	1979-10-01 → 1979-10-31
MR	Monitoring	Archived	1979-10-01 → 1979-10-31
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	36.558 µg/L 46% of the EPA limit 80 µg/L worst single sample: 47.17 µg/L	58/58	SYR4	2012–2019
Chloroform	31.8 µg/L No EPA limit set worst single sample: 40 µg/L	57/58	SYR4	2012–2019
Dichloroacetic Acid	11 µg/L No EPA limit set worst single sample: 12 µg/L	56/56	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	20.075 µg/L 33% of the EPA limit 60 µg/L worst single sample: 21 µg/L	56/56	SYR4	2012–2019
Trichloroacetic Acid	9.83 µg/L No EPA limit set worst single sample: 11 µg/L	55/55	SYR4	2012–2019
Bromodichloromethane	6 µg/L No EPA limit set worst single sample: 6.6 µg/L	53/57	SYR4	2012–2019
Dibromochloromethane	2.945 µg/L No EPA limit set worst single sample: 3.7 µg/L	24/57	SYR4	2012–2019
Nitrate	350 µg/L 3.5% of the EPA limit 10000 µg/L	18/18	SYR4	2012–2019
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	9/9	LCR	2023
Fluoride	860 µg/L 22% of the EPA limit 4000 µg/L	1/1	SYR4	2015
Nitrate-Nitrite	254 µg/L 2.5% of the EPA limit 10000 µg/L	1/2	SYR4	2015–2016

93 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Devin Mackin

Frequently asked questions about Kelso City of

Is Kelso City of tap water safe to drink?

EPA monitoring detected 11 contaminants in Kelso 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 Kelso City of's water?

EPA monitoring detected TTHM, Chloroform, Dichloroacetic Acid, 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 Kelso City of serve?

Kelso City of reports serving 15,775 people in Washington, per its EPA record.

Has Kelso City of had any water quality violations?

The EPA has 13 violations on file for Kelso City of, of which 1 is 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.