Tap WaterIndex

← North Carolina

Tap water quality report

Wilson Mills, NC

EPA monitoring detected 28 contaminants across the 2 water suppliers serving Wilson Mills. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
99,052
people served
28
contaminants found
North Carolina rankings Lead in North Carolina PFAS in North Carolina

What was found in Wilson Mills's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
586.5 µg/L 15%
of the EPA limit 4000 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Copper
144 µg/L 11%
of the EPA limit 1300 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2018
2/2 SYR4
TTHM
75 µg/L 94%
of the EPA limit 80 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
65.1 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Chloroform
48.55 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Bromoform
27.75 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Dibromochloromethane
25.55 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Dichloroacetic Acid
21.3 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Trichloroacetic Acid
20.05 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
2/2 SYR4
Bromodichloromethane
16 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Monobromoacetic Acid
13.5 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Monochloroacetic Acid
13.35 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Dibromoacetic Acid
11 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Lead
5.9 µg/L 39%
of the EPA limit 15 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2018
1/2 SYR4
Gross Beta Particle Activity
4 pCi/L
No EPA limit set
Highest in the city: WILSON HEIGHTS S/D · 25 people · 2013
1/2 SYR4
Mercury
1 µg/L 50%
of the EPA limit 2 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Toluene
0.8000 µg/L 0.1%
of the EPA limit 1000 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Simazine
0.4050 µg/L 10%
of the EPA limit 4 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Atrazine
0.1780 µg/L 5.9%
of the EPA limit 3 µg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2019
1/2 SYR4
Pfba
0.0156 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
PFOS
0.0141 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
Pfhxa
0.0092 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
Pfpea
0.0092 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
PFOA
0.0076 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
PFHXS
0.0053 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
Pfhpa
0.0050 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
PFBS
0.0045 µg/L
No EPA limit set
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2025
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: JOHNSTON CO-WEST · 99,027 people · 2024
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 95th percentile of the system's samples — 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

SupplierPopulation 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 level at the main supplier 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.