Is Osceola Water Works Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Clarke

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

115

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-09-01 → 2024-09-30
TT	Health-based	Resolved	2024-09-01 → 2024-09-30
TT	Health-based	Resolved	2024-09-01 → 2024-09-30
TT	Health-based	Resolved	2024-09-01 → 2024-09-30
TT	Health-based	Resolved	2024-03-01 → 2024-03-31
TT	Health-based	Resolved	2024-03-01 → 2024-03-31
TT	Health-based	Resolved	2024-03-01 → 2024-03-31
TT	Health-based	Resolved	2024-03-01 → 2024-03-31
TT	Health-based	Resolved	2020-10-01 → 2020-10-31
TT	Health-based	Resolved	2020-10-01 → 2020-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfba	0.0093 µg/L	3/4	2024

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
Chlorite	880 µg/L 88% of the EPA limit 1000 µg/L worst single sample: 1100 µg/L	181/192	SYR4	2012–2019
Copper	415 µg/L 32% of the EPA limit 1300 µg/L worst single sample: 730 µg/L	91/100	SYR4	2012–2018
Bromodichloromethane	7.93 µg/L No EPA limit set worst single sample: 9.7 µg/L	58/58	SYR4	2012–2019
Chloroform	35 µg/L No EPA limit set worst single sample: 37 µg/L	58/58	SYR4	2012–2019
Dichloroacetic Acid	29.15 µg/L No EPA limit set worst single sample: 35 µg/L	58/58	SYR4	2012–2019
TTHM	43.15 µg/L 54% of the EPA limit 80 µg/L worst single sample: 47 µg/L	58/58	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	51.3 µg/L 86% of the EPA limit 60 µg/L worst single sample: 59 µg/L	58/58	SYR4	2012–2019
Trichloroacetic Acid	17.15 µg/L No EPA limit set worst single sample: 23 µg/L	58/58	SYR4	2012–2019
Dibromochloromethane	2.275 µg/L No EPA limit set worst single sample: 2.9 µg/L	46/58	SYR4	2012–2019
Monochloroacetic Acid	5.15 µg/L No EPA limit set worst single sample: 7 µg/L	38/58	SYR4	2012–2019
Lead	0.0060 mg/L 40% of the EPA limit 0.0150 mg/L	23/23	LCR	2024
Lead	11 µg/L 73% of the EPA limit 15 µg/L worst single sample: 13 µg/L	21/100	SYR4	2012–2018
Atrazine	0.9400 µg/L 31% of the EPA limit 3 µg/L worst single sample: 1.5 µg/L	15/15	SYR4	2012–2019
P-Dichlorobenzene	1.18 µg/L 1.6% of the EPA limit 75 µg/L worst single sample: 1.2 µg/L	3/6	SYR4	2012–2018
Dibromoacetic Acid	1 µg/L No EPA limit set	2/58	SYR4	2012–2019
Nitrate	1300 µg/L 13% of the EPA limit 10000 µg/L	2/16	SYR4	2012–2019
Simazine	0.4900 µg/L 12% of the EPA limit 4 µg/L worst single sample: 0.5000 µg/L	2/5	SYR4	2012–2018
Barium	60 µg/L 3% of the EPA limit 2000 µg/L	1/1	SYR4	2014
Di(2-ethylhexyl) Phthalate	1 µg/L 17% of the EPA limit 6 µg/L	1/5	SYR4	2012–2018
Fluoride	600 µg/L 15% of the EPA limit 4000 µg/L	1/1	SYR4	2014
Nitrite	470 µg/L 47% of the EPA limit 1000 µg/L	1/8	SYR4	2018–2019

70 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, TotalArsenicAsbestosBenzeneBenzo(A)PyreneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: OSCEOLA WATER WORKS
Phone: 641-342-1435
Email: [email protected]

Frequently asked questions about Osceola Water Works

Is Osceola Water Works tap water safe to drink?

EPA monitoring detected 22 contaminants in Osceola Water Works'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 Osceola Water Works's water?

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

How many people does Osceola Water Works serve?

Osceola Water Works reports serving 5,503 people in Iowa, per its EPA record.

Has Osceola Water Works had any water quality violations?

The EPA has 115 violations on file for Osceola Water Works, of which 49 are health-based (a contaminant limit or required treatment was breached) and 3 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.