Is Oskaloosa Municipal Water Dept Tap Water Safe? Quality Report

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

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

153

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2015-08-01 → 2015-08-31
MCL	Health-based	Resolved	2015-08-01 → 2015-08-31
MCL	Health-based	Resolved	2015-08-01 → 2015-08-31
MCL	Health-based	Resolved	2015-08-01 → 2015-08-31
MCL	Health-based	Resolved	2015-08-01 → 2015-08-31
TT	Health-based	Resolved	2011-02-01 → 2011-02-28
TT	Health-based	Resolved	2011-02-01 → 2011-02-28
TT	Health-based	Resolved	2011-02-01 → 2011-02-28
TT	Health-based	Resolved	2011-02-01 → 2011-02-28
MCL	Health-based	Resolved	2009-09-01 → 2009-09-30

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
Bromodichloromethane	17 µg/L No EPA limit set worst single sample: 20 µg/L	114/114	SYR4	2012–2019
Chloroform	37.07 µg/L No EPA limit set worst single sample: 47.9 µg/L	114/114	SYR4	2012–2019
Dichloroacetic Acid	10.805 µg/L No EPA limit set worst single sample: 15.4 µg/L	114/114	SYR4	2012–2019
TTHM	60.87 µg/L 76% of the EPA limit 80 µg/L worst single sample: 68 µg/L	114/114	SYR4	2012–2019
Dibromochloromethane	10.52 µg/L No EPA limit set worst single sample: 14 µg/L	113/114	SYR4	2012–2019
Bromoform	2.855 µg/L No EPA limit set worst single sample: 3.38 µg/L	110/114	SYR4	2012–2019
Dibromoacetic Acid	4.0715 µg/L No EPA limit set worst single sample: 5.32 µg/L	108/114	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	22.66 µg/L 38% of the EPA limit 60 µg/L worst single sample: 33.2 µg/L	102/114	SYR4	2012–2019
Trichloroacetic Acid	4.275 µg/L No EPA limit set worst single sample: 5.71 µg/L	96/114	SYR4	2012–2019
Copper	40 µg/L 3.1% of the EPA limit 1300 µg/L worst single sample: 70 µg/L	80/90	SYR4	2013–2019
Monochloroacetic Acid	10.106 µg/L No EPA limit set worst single sample: 19.1 µg/L	39/114	SYR4	2012–2019
Lead	12.39 µg/L 83% of the EPA limit 15 µg/L worst single sample: 13.2 µg/L	19/90	SYR4	2013–2019
Lead	0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Nitrate	1800 µg/L 18% of the EPA limit 10000 µg/L	12/16	SYR4	2012–2019
Monobromoacetic Acid	7.278 µg/L No EPA limit set worst single sample: 7.43 µg/L	5/114	SYR4	2012–2019
Lithium	14 µg/L No EPA limit set	4/4	UCMR-5	2025
Fluoride	220 µg/L 5.5% of the EPA limit 4000 µg/L	1/1	SYR4	2013

72 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBariumBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: OSKALOOSA MUNICIPAL WATER DEPT
Phone: 641-673-8476
Email: [email protected]

Frequently asked questions about Oskaloosa Municipal Water Dept

Is Oskaloosa Municipal Water Dept tap water safe to drink?

EPA monitoring detected 17 contaminants in Oskaloosa Municipal 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 Oskaloosa Municipal Water Dept's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Oskaloosa Municipal Water Dept serve?

Oskaloosa Municipal Water Dept reports serving 12,808 people in Iowa, per its EPA record.

Has Oskaloosa Municipal Water Dept had any water quality violations?

The EPA has 153 violations on file for Oskaloosa Municipal Water Dept, of which 29 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.