Is Sirwa #3 (Osceola) Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
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

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-07-01 → 2005-09-30
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30
MCL	Health-based	Resolved	2005-04-01 → 2005-06-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfba	0.0073 µg/L	3/4	2025

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	10.15 µg/L No EPA limit set worst single sample: 15 µg/L	58/58	SYR4	2012–2019
Chloroform	56.9 µg/L No EPA limit set worst single sample: 73 µg/L	58/58	SYR4	2012–2019
Dichloroacetic Acid	37.9 µg/L No EPA limit set worst single sample: 56 µg/L	58/58	SYR4	2012–2019
TTHM	71.15 µg/L 89% of the EPA limit 80 µg/L worst single sample: 86 µg/L	58/58	SYR4	2012–2019
Trichloroacetic Acid	22 µg/L No EPA limit set worst single sample: 26 µg/L	58/58	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	64.8 µg/L 108% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 88 µg/L	57/58	SYR4	2012–2019
Dibromochloromethane	2.58 µg/L No EPA limit set worst single sample: 3.5 µg/L	45/58	SYR4	2012–2019
Monochloroacetic Acid	6 µg/L No EPA limit set worst single sample: 7 µg/L	38/58	SYR4	2012–2019
Copper	676 µg/L 52% of the EPA limit 1300 µg/L worst single sample: 1000 µg/L	19/20	SYR4	2015–2018
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	14/14	LCR	2024
Dibromoacetic Acid	1 µg/L No EPA limit set	2/58	SYR4	2012–2019
Lead	5.85 µg/L 39% of the EPA limit 15 µg/L worst single sample: 6 µg/L	2/20	SYR4	2015–2018
Monobromoacetic Acid	1 µg/L No EPA limit set	2/58	SYR4	2012–2019

30 contaminants tested, none detected

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Utility contact

Contact: S I R W A #3 (OSCEOLA)
Phone: 641-782-5744
Email: [email protected]

Frequently asked questions about Sirwa #3 (Osceola)

Is Sirwa #3 (Osceola) tap water safe to drink?

EPA monitoring detected 14 contaminants in Sirwa #3 (Osceola)'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 Sirwa #3 (Osceola)'s water?

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

How many people does Sirwa #3 (Osceola) serve?

Sirwa #3 (Osceola) reports serving 4,080 people in Iowa, per its EPA record.

Has Sirwa #3 (Osceola) had any water quality violations?

The EPA has 36 violations on file for Sirwa #3 (Osceola), of which 33 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.