Is Union County Water Tap Water Safe? Quality Report

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

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	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2020-03-01 → 2020-03-31
MCL	Health-based	Resolved	2017-07-01 → 2017-09-30
MCL	Health-based	Resolved	2017-07-01 → 2017-09-30
MCL	Health-based	Resolved	2017-07-01 → 2017-09-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0074 µg/L	7/8	2023
Pfpea	0.0100 µg/L	7/8	2023
Pfba	0.0065 µg/L	2/8	2023
PFOS	0.0049 µg/L	2/8	2023
PFOA	0.0042 µg/L	1/8	2023

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	73.1 µg/L 91% of the EPA limit 80 µg/L worst single sample: 97.1 µg/L	260/262	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	66.8 µg/L 111% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 112.2 µg/L	245/256	SYR4	2012–2019
Bromodichloromethane	10.5 µg/L No EPA limit set worst single sample: 13.1 µg/L	215/216	SYR4	2013–2019
Chloroform	65.2 µg/L No EPA limit set worst single sample: 91.6 µg/L	215/216	SYR4	2013–2019
Dichloroacetic Acid	35.85 µg/L No EPA limit set worst single sample: 57.1 µg/L	204/216	SYR4	2013–2019
Trichloroacetic Acid	31 µg/L No EPA limit set worst single sample: 55.1 µg/L	198/216	SYR4	2013–2019
Dibromochloromethane	8.96 µg/L No EPA limit set worst single sample: 10.8 µg/L	149/216	SYR4	2013–2019
Copper	256.9 µg/L 20% of the EPA limit 1300 µg/L worst single sample: 500 µg/L	138/150	SYR4	2013–2019
Dibromoacetic Acid	4.41 µg/L No EPA limit set worst single sample: 5.7 µg/L	60/216	SYR4	2013–2019
Monobromoacetic Acid	22.75 µg/L No EPA limit set worst single sample: 25 µg/L	26/216	SYR4	2013–2019
Lead	46.87 µg/L 312% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 290 µg/L	23/150	SYR4	2013–2019
Bromoform	4.09 µg/L No EPA limit set worst single sample: 4.2 µg/L	22/216	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	18/18	LCR	2025
Monochloroacetic Acid	7.73 µg/L No EPA limit set worst single sample: 7.8 µg/L	15/216	SYR4	2013–2019

25 contaminants tested, none detected

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Utility contact

Contact: YOUNG, DAMON
Phone: 980-398-6851
Email: [email protected]

Frequently asked questions about Union County Water

Is Union County Water tap water safe to drink?

EPA monitoring detected 19 contaminants in Union County Water'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 Union County Water's water?

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

How many people does Union County Water serve?

Union County Water reports serving 169,685 people in North Carolina, per its EPA record.

Has Union County Water had any water quality violations?

The EPA has 43 violations on file for Union County Water, of which 24 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.