Is Oak Grove Water Association Tap Water Safe? Quality Report

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

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	2013-05-01 → 2013-05-31
MCL	Health-based	Resolved	2013-05-01 → 2013-05-31
MCL	Health-based	Resolved	2013-05-01 → 2013-05-31
MON	Monitoring	Resolved	2025-06-01 → 2025-06-30
MON	Monitoring	Resolved	2025-06-01 → 2025-06-30
MON	Monitoring	Resolved	2025-06-01 → 2025-06-30
RPT	Monitoring	Resolved	2022-01-01
MON	Monitoring	Resolved	2016-09-01 → 2016-09-30
MON	Monitoring	Resolved	2016-09-01 → 2016-09-30
MON	Monitoring	Resolved	2016-09-01 → 2016-09-30

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
Dichloroacetic Acid	17.675 µg/L No EPA limit set worst single sample: 37.1 µg/L	58/58	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	29.305 µg/L 49% of the EPA limit 60 µg/L worst single sample: 70.7 µg/L	58/58	SYR4	2012–2019
Trichloroacetic Acid	12.38 µg/L No EPA limit set worst single sample: 30.8 µg/L	57/58	SYR4	2012–2019
Bromodichloromethane	15.075 µg/L No EPA limit set worst single sample: 16.2 µg/L	56/56	SYR4	2012–2019
Chloroform	83.7 µg/L No EPA limit set worst single sample: 105 µg/L	56/56	SYR4	2012–2019
TTHM	101.5 µg/L 127% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 115 µg/L	56/56	SYR4	2012–2019
Dibromochloromethane	4.85 µg/L No EPA limit set worst single sample: 5.5 µg/L	46/56	SYR4	2012–2019
Dibromoacetic Acid	1.45 µg/L No EPA limit set worst single sample: 1.5 µg/L	11/58	SYR4	2012–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	8/8	LCR	2004
Monochloroacetic Acid	2.95 µg/L No EPA limit set worst single sample: 3 µg/L	6/58	SYR4	2012–2019
Bromoform	1.1 µg/L No EPA limit set	2/56	SYR4	2012–2019
Lead	37.1 µg/L 247% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 39 µg/L	2/30	SYR4	2013–2019
Monobromoacetic Acid	1.48 µg/L No EPA limit set worst single sample: 1.5 µg/L	2/58	SYR4	2012–2019
Copper	20.2 µg/L 1.6% of the EPA limit 1300 µg/L	1/30	SYR4	2013–2019

Utility contact

Contact: DUFRESNE, STEVE
Phone: 479-474-5067
Email: [email protected]

Frequently asked questions about Oak Grove Water Association

Is Oak Grove Water Association tap water safe to drink?

EPA monitoring detected 14 contaminants in Oak Grove Water Association'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 Oak Grove Water Association's water?

EPA monitoring detected Dichloroacetic Acid, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Oak Grove Water Association serve?

Oak Grove Water Association reports serving 2,963 people in Arkansas, per its EPA record.

Has Oak Grove Water Association had any water quality violations?

The EPA has 20 violations on file for Oak Grove Water Association, of which 3 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.