What was found in Wilson'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 348.33 µg/L 27% of the EPA limit 1300 µg/L Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 1232 µg/L — LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 4/5 | SYR4 |
| Fluoride | 785 µg/L 20% of the EPA limit 4000 µg/L Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 1/5 | SYR4 |
| Chlorite | 513 µg/L 51% of the EPA limit 1000 µg/L Highest in the city: LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 1/5 | SYR4 |
| TTHM | 89.4 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 99.04 µg/L — LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 4/5 | SYR4 |
| Chloroform | 63.8385 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 81.11 µg/L — LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 4/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 63.4 µg/L 106% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 4/5 | SYR4 |
| Lead | 51.35 µg/L 342% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 4/5 | SYR4 |
| Dichloroacetic Acid | 35.05 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 4/5 | SYR4 |
| Trichloroacetic Acid | 27 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 28.985 µg/L — LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 3/5 | SYR4 |
| Bromodichloromethane | 20 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 4/5 | SYR4 |
| Lithium | 17.2 µg/L No EPA limit set Highest in the city: WILSON CO SOUTHWEST WATER DIST · 5,730 people · 2024 | 1/5 | UCMR-5 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 9.7 µg/L — LONGLEAF NEURO-MEDICAL TREATMENT CENTER · 200 people · 2019 | 2/5 | SYR4 |
| Dibromochloromethane | 8 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 9.28 µg/L — WILSON CO SOUTHWEST WATER DIST · 5,730 people · 2019 | 4/5 | SYR4 |
| Monochloroacetic Acid | 8 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 2/5 | SYR4 |
| Gross Beta Particle Activity | 4.8 pCi/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2012 | 1/5 | SYR4 |
| Bromoform | 4 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019 | 3/5 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Main supplier: WILSON, CITY OF · 50,332 people · 2019
Highest in the city: 2.37 µg/L — WILSON CO SOUTHWEST WATER DIST · 5,730 people · 2019 | 4/5 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: WILSON, CITY OF · 50,332 people · 2025
Highest in the city: 0.0050 mg/L — WILSON CO SOUTHEAST WATER DIST · 4,388 people · 2025 | 4/5 | 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
| Supplier | Population served |
|---|---|
| WILSON, CITY OF | 50,332 |
| WILSON CO SOUTHWEST WATER DIST | 5,730 |
| WILSON CO SOUTHEAST WATER DIST | 4,388 |
| LONGLEAF NEURO-MEDICAL TREATMENT CENTER | 200 |
| MILLSTONE CREEK | 28 |
Frequently asked questions about Wilson tap water
Is Wilson tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Wilson. 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?
5 public water suppliers report drinking-water monitoring for Wilson, North Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Wilson's water?
The contaminants EPA monitoring detected in Wilson include Copper, Fluoride, Chlorite, TTHM, 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.