Is Mountain Home Waterworks Tap Water Safe? Quality Report

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

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	2014-07-01 → 2014-07-31
MCL	Health-based	Resolved	2014-07-01 → 2014-07-31
MCL	Health-based	Resolved	2014-07-01 → 2014-07-31
MCL	Health-based	Resolved	2010-07-01 → 2010-07-31
MCL	Health-based	Resolved	2010-07-01 → 2010-07-31
MCL	Health-based	Resolved	2010-07-01 → 2010-07-31
MCL	Health-based	Archived	1995-03-01 → 1995-03-31
MCL	Health-based	Archived	1995-03-01 → 1995-03-31
MCL	Health-based	Archived	1995-03-01 → 1995-03-31
MCL	Health-based	Archived	1995-03-01 → 1995-03-31

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	8.4 µg/L No EPA limit set worst single sample: 10.1 µg/L	141/141	SYR4	2012–2019
Chloroform	65.3 µg/L No EPA limit set worst single sample: 108 µg/L	141/141	SYR4	2012–2019
TTHM	76.4 µg/L 96% of the EPA limit 80 µg/L worst single sample: 116 µg/L	128/128	SYR4	2012–2019
Dichloroacetic Acid	22.55 µg/L No EPA limit set worst single sample: 38.7 µg/L	127/128	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	47.86 µg/L 80% of the EPA limit 60 µg/L worst single sample: 81.2 µg/L	127/128	SYR4	2012–2019
Trichloroacetic Acid	23.05 µg/L No EPA limit set worst single sample: 38.9 µg/L	127/128	SYR4	2012–2019
Chlorite	646.8 µg/L 65% of the EPA limit 1000 µg/L worst single sample: 712 µg/L	105/105	SYR4	2013–2019
Fluoride	1019 µg/L 25% of the EPA limit 4000 µg/L worst single sample: 1330 µg/L	103/103	SYR4	2012–2019
Dibromochloromethane	2.1 µg/L No EPA limit set worst single sample: 2.4 µg/L	94/147	SYR4	2012–2019
Copper	237.4 µg/L 18% of the EPA limit 1300 µg/L worst single sample: 420 µg/L	62/90	SYR4	2013–2019
Lead	9 µg/L 60% of the EPA limit 15 µg/L worst single sample: 17 µg/L	59/98	SYR4	2012–2019
Monochloroacetic Acid	6.575 µg/L No EPA limit set worst single sample: 8.4 µg/L	46/128	SYR4	2012–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	16/16	LCR	2025
Monobromoacetic Acid	7.14 µg/L No EPA limit set worst single sample: 10.5 µg/L	15/128	SYR4	2012–2019
Nitrate-Nitrite	420 µg/L 4.2% of the EPA limit 10000 µg/L	12/16	SYR4	2012–2019
Dibromoacetic Acid	1.2 µg/L No EPA limit set	9/128	SYR4	2012–2019
Xylenes, Total	4.4855 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 4.59 µg/L	2/13	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	1.73 µg/L 29% of the EPA limit 6 µg/L	1/15	SYR4	2012–2019
Gross Beta Particle Activity	1.8 pCi/L No EPA limit set	1/8	SYR4	2012–2019

89 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MORGAN, JAMES
Phone: 870-492-5628
Email: [email protected]

Frequently asked questions about Mountain Home Waterworks

Is Mountain Home Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Mountain Home 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 Mountain Home Waterworks's water?

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

How many people does Mountain Home Waterworks serve?

Mountain Home Waterworks reports serving 19,618 people in Arkansas, per its EPA record.

Has Mountain Home Waterworks had any water quality violations?

The EPA has 11 violations on file for Mountain Home Waterworks, of which 10 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.