Is Wilson Mills, NC Tap Water Safe? Quality & Contaminants

What was found in Wilson Mills's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Fluoride	590 µg/L 15% of the EPA limit 4000 µg/L	2/2	SYR4
Copper	221 µg/L 17% of the EPA limit 1300 µg/L	2/2	SYR4
TTHM	106 µg/L 133% of the EPA limit, in the worst sample — 80 µg/L	2/2	SYR4
Total Haloacetic Acids (HAA5)	81.5 µg/L 136% of the EPA limit, in the worst sample — 60 µg/L	2/2	SYR4
Chloroform	59 µg/L No EPA limit set	2/2	SYR4
Dichloroacetic Acid	33 µg/L No EPA limit set	2/2	SYR4
Dibromochloromethane	32 µg/L No EPA limit set	1/2	SYR4
Bromoform	31 µg/L No EPA limit set	1/2	SYR4
Trichloroacetic Acid	28 µg/L No EPA limit set	2/2	SYR4
Bromodichloromethane	27 µg/L No EPA limit set	1/2	SYR4
Monobromoacetic Acid	24 µg/L No EPA limit set	1/2	SYR4
Dibromoacetic Acid	15 µg/L No EPA limit set	1/2	SYR4
Monochloroacetic Acid	14 µg/L No EPA limit set	1/2	SYR4
Lead	6 µg/L 40% of the EPA limit 15 µg/L	1/2	SYR4
Gross Beta Particle Activity	4 pCi/L No EPA limit set	1/2	SYR4
Mercury	1 µg/L 50% of the EPA limit 2 µg/L	1/2	SYR4
Toluene	0.8000 µg/L 0.1% of the EPA limit 1000 µg/L	1/2	SYR4
Simazine	0.5100 µg/L 13% of the EPA limit 4 µg/L	1/2	SYR4
Atrazine	0.1800 µg/L 6% of the EPA limit 3 µg/L	1/2	SYR4
Pfba	0.0156 µg/L No EPA limit set	1/2	UCMR-5
PFOS	0.0141 µg/L No EPA limit set	1/2	UCMR-5
Pfhxa	0.0092 µg/L No EPA limit set	1/2	UCMR-5
Pfpea	0.0092 µg/L No EPA limit set	1/2	UCMR-5
PFOA	0.0076 µg/L No EPA limit set	1/2	UCMR-5
PFHXS	0.0053 µg/L No EPA limit set	1/2	UCMR-5
Pfhpa	0.0050 µg/L No EPA limit set	1/2	UCMR-5
PFBS	0.0045 µg/L No EPA limit set	1/2	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	2/2	LCR

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Wilson Mills

Supplier	Population served
JOHNSTON CO-WEST	99,027
WILSON HEIGHTS S/D	25

Frequently asked questions about Wilson Mills tap water

Is Wilson Mills tap water safe to drink?

EPA testing detected 28 contaminants in the water serving Wilson Mills. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Wilson Mills?

2 public water suppliers report drinking-water monitoring for Wilson Mills, North Carolina to the EPA. Each is listed above with its population served.

What contaminants are in Wilson Mills's water?

The contaminants EPA monitoring detected in Wilson Mills include Fluoride, Copper, TTHM, Total Haloacetic Acids (HAA5), Chloroform. The full list, with the highest level found and the data source, is in the table above.

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.