Is Butler Co. Water District 2 Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Butler

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	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1997-08-01 → 1997-08-31
MCL	Health-based	Resolved	1995-09-01 → 1995-09-30
MCL	Health-based	Resolved	1995-09-01 → 1995-09-30
MCL	Health-based	Resolved	1995-09-01 → 1995-09-30
MCL	Health-based	Resolved	1995-09-01 → 1995-09-30
Other	Monitoring	Resolved	2024-08-14

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFBS	0.0035 µg/L	2/6	2025
PFHXS	0.0047 µg/L	1/6	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
Bromoform	13.645 µg/L No EPA limit set worst single sample: 17.88 µg/L	171/171	SYR4	2012–2019
Dibromochloromethane	16.39 µg/L No EPA limit set worst single sample: 21.89 µg/L	171/171	SYR4	2012–2019
TTHM	41.145 µg/L 51% of the EPA limit 80 µg/L worst single sample: 53.26 µg/L	171/171	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	11.42 µg/L 19% of the EPA limit 60 µg/L worst single sample: 14.36 µg/L	167/168	SYR4	2012–2019
Bromodichloromethane	10.58 µg/L No EPA limit set worst single sample: 14.78 µg/L	166/171	SYR4	2012–2019
Dibromoacetic Acid	7.0095 µg/L No EPA limit set worst single sample: 9.827 µg/L	166/168	SYR4	2012–2019
Chloroform	9.384 µg/L No EPA limit set worst single sample: 10.27 µg/L	157/171	SYR4	2012–2019
Copper	31.86 µg/L 2.5% of the EPA limit 1300 µg/L worst single sample: 69.4 µg/L	102/105	SYR4	2014–2017
Dichloroacetic Acid	4.7903 µg/L No EPA limit set worst single sample: 5.185 µg/L	83/168	SYR4	2012–2019
Trichloroacetic Acid	3.61 µg/L No EPA limit set worst single sample: 6.092 µg/L	30/168	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	24/24	LCR	2025
Lead	12.655 µg/L 84% of the EPA limit 15 µg/L worst single sample: 27 µg/L	20/105	SYR4	2014–2017
Monochloroacetic Acid	4.2404 µg/L No EPA limit set worst single sample: 4.33 µg/L	15/168	SYR4	2012–2019

29 contaminants tested, none detected

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Utility contact

Contact: DAY, BRANDI
Phone: 513-887-3929
Email: [email protected]

Frequently asked questions about Butler Co. Water District 2

Is Butler Co. Water District 2 tap water safe to drink?

EPA monitoring detected 15 contaminants in Butler Co. Water District 2'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 Butler Co. Water District 2's water?

EPA monitoring detected Bromoform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Butler Co. Water District 2 serve?

Butler Co. Water District 2 reports serving 116,572 people in Ohio, per its EPA record.

Has Butler Co. Water District 2 had any water quality violations?

The EPA has 25 violations on file for Butler Co. Water District 2, of which 9 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.