Is Mount Vernon Water Works Tap Water Safe? Quality Report

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

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.

188

health-based violations

614

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2012-04-01 → 2012-04-30
TT	Health-based	Resolved	2012-04-01 → 2012-04-30
TT	Health-based	Resolved	2012-04-01 → 2012-04-30
TT	Health-based	Resolved	2012-04-01 → 2012-04-30
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31
MCL	Health-based	Resolved	2011-03-01 → 2011-03-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
Hfpo-Da	0.0053 µg/L	2/4	2024
Pfhxa	0.0032 µg/L	2/4	2024
Pfpea	0.0174 µg/L	2/4	2024
PFOA	0.0040 µg/L	1/4	2024

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
TTHM	110.39 µg/L 138% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 124.3 µg/L	58/58	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	66.6 µg/L 111% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 81 µg/L	57/58	SYR4	2012–2019
Copper	389.15 µg/L 30% of the EPA limit 1300 µg/L worst single sample: 734 µg/L	20/20	SYR4	2017
Nitrate	1320 µg/L 13% of the EPA limit 10000 µg/L	20/20	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Atrazine	0.8860 µg/L 30% of the EPA limit 3 µg/L worst single sample: 1.12 µg/L	10/32	SYR4	2012–2019
Fluoride	698.9 µg/L 17% of the EPA limit 4000 µg/L worst single sample: 737 µg/L	7/7	SYR4	2012–2019
Lead	20.05 µg/L 134% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 24.2 µg/L	6/20	SYR4	2017
Selenium	6.36 µg/L 13% of the EPA limit 50 µg/L worst single sample: 6.8 µg/L	3/8	SYR4	2012–2019
Arsenic	2.125 µg/L 21% of the EPA limit 10 µg/L worst single sample: 2.2 µg/L	2/8	SYR4	2012–2019
Barium	195.4 µg/L 9.8% of the EPA limit 2000 µg/L worst single sample: 198 µg/L	2/8	SYR4	2012–2019
Bromodichloromethane	15.93 µg/L No EPA limit set worst single sample: 16.5 µg/L	2/3	SYR4	2012–2014
Chloroform	37.19 µg/L No EPA limit set worst single sample: 38.6 µg/L	2/3	SYR4	2012–2014
Dibromochloromethane	2.415 µg/L No EPA limit set worst single sample: 2.5 µg/L	2/3	SYR4	2012–2014
Antimony, Total	0.7000 µg/L 12% of the EPA limit 6 µg/L	1/8	SYR4	2012–2019
Chromium	1 µg/L 1% of the EPA limit 100 µg/L	1/8	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	0.6500 µg/L 11% of the EPA limit 6 µg/L	1/32	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	1.7 pCi/L 11% of the EPA limit 15 pCi/L	1/1	SYR4	2019

81 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: GRAY, CHARLES
Phone: 812-838-2136
Email: [email protected]

Frequently asked questions about Mount Vernon Water Works

Is Mount Vernon Water Works tap water safe to drink?

EPA monitoring detected 22 contaminants in Mount Vernon Water Works'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 Mount Vernon Water Works's water?

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

How many people does Mount Vernon Water Works serve?

Mount Vernon Water Works reports serving 6,426 people in Indiana, per its EPA record.

Has Mount Vernon Water Works had any water quality violations?

The EPA has 614 violations on file for Mount Vernon Water Works, of which 188 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.