Is Black Oak Waterworks Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Craighead

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
TT	Health-based	Unaddressed	2026-04-30
MCL	Health-based	Resolved	2004-04-01 → 2004-04-30
MCL	Health-based	Resolved	2002-12-01 → 2002-12-31
MCL	Health-based	Archived	1998-11-01 → 1998-11-30
MCL	Health-based	Archived	1998-11-01 → 1998-11-30
MCL	Health-based	Archived	1998-11-01 → 1998-11-30
MCL	Health-based	Archived	1998-09-01 → 1998-09-30
MCL	Health-based	Archived	1998-09-01 → 1998-09-30
MCL	Health-based	Archived	1998-09-01 → 1998-09-30
MCL	Health-based	Archived	1995-04-01 → 1995-04-30

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
Copper	460 µg/L 35% of the EPA limit 1300 µg/L worst single sample: 510 µg/L	11/15	SYR4	2012–2018
Lead	0.0070 mg/L 47% of the EPA limit 0.0150 mg/L	7/7	LCR	2004
Nitrate-Nitrite	210 µg/L 2.1% of the EPA limit 10000 µg/L	6/16	SYR4	2012–2019
Lead	15.6 µg/L 104% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 18 µg/L	5/18	SYR4	2012–2018
Chloroform	9.73 µg/L No EPA limit set worst single sample: 10.4 µg/L	3/7	SYR4	2012–2019
Dichloroacetic Acid	4.59 µg/L No EPA limit set worst single sample: 4.9 µg/L	3/4	SYR4	2012–2017
Total Haloacetic Acids (HAA5)	9.63 µg/L 16% of the EPA limit 60 µg/L worst single sample: 10.2 µg/L	3/4	SYR4	2012–2017
Trichloroacetic Acid	5.03 µg/L No EPA limit set worst single sample: 5.3 µg/L	3/4	SYR4	2012–2017
Bromodichloromethane	3.13 µg/L No EPA limit set worst single sample: 3.2 µg/L	2/7	SYR4	2012–2019
Dibromochloromethane	1.14307 µg/L No EPA limit set worst single sample: 1.2 µg/L	2/9	SYR4	2012–2019
TTHM	13.255 µg/L 17% of the EPA limit 80 µg/L worst single sample: 13.6 µg/L	2/4	SYR4	2012–2017
Gross Beta Particle Activity	3.3 pCi/L No EPA limit set	1/3	SYR4	2012–2018

65 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: TATE, CAMERON
Phone: 870-919-3078
Email: [email protected]

Frequently asked questions about Black Oak Waterworks

Is Black Oak Waterworks tap water safe to drink?

EPA monitoring detected 12 contaminants in Black Oak Waterworks'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 Black Oak Waterworks's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Lead, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Black Oak Waterworks serve?

Black Oak Waterworks reports serving 245 people in Arkansas, per its EPA record.

Has Black Oak Waterworks had any water quality violations?

The EPA has 97 violations on file for Black Oak Waterworks, of which 15 are health-based (a contaminant limit or required treatment was breached) and 2 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.