What was found in Fort Mill'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 |
|---|---|---|---|
| Nitrate | 402.5 µg/L 4% of the EPA limit 10000 µg/L Highest in the city: FERN FOREST MHP (SC4660001) · 99 people · 2019 | 2/6 | SYR4 |
| Fluoride | 285 µg/L 7.1% of the EPA limit 4000 µg/L Highest in the city: FERN FOREST MHP (SC4660001) · 99 people · 2018 | 2/6 | SYR4 |
| Copper | 52.95 µg/L 4.1% of the EPA limit 1300 µg/L Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2018
Highest in the city: 165.45 µg/L — WHITLEY ESTATES (4660055) · 93 people · 2019 | 6/6 | SYR4 |
| Nitrate-Nitrite | 130 µg/L 1.3% of the EPA limit 10000 µg/L Highest in the city: WHITLEY ESTATES (4660055) · 93 people · 2016 | 2/6 | SYR4 |
| TTHM | 80.15 µg/L 100% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019 | 4/6 | SYR4 |
| Lead | 25.6 µg/L 171% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2018
Highest in the city: 46.2 µg/L — BGWC FOXWOOD (SC4650008) · 570 people · 2019 | 6/6 | SYR4 |
| Chloroform | 35.625 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019 | 4/6 | SYR4 |
| Dibromochloromethane | 27.625 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 31.14 µg/L — RIVERVIEW RURAL CWS (SC4620001) · 2,200 people · 2019 | 4/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.425 µg/L 41% of the EPA limit 60 µg/L Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 26.84 µg/L — TWIN LAKES ESTATES (SC4660007) · 550 people · 2019 | 4/6 | SYR4 |
| Bromodichloromethane | 22.475 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019 | 4/6 | SYR4 |
| Bromoform | 14.6 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 16.525 µg/L — RIVERVIEW RURAL CWS (SC4620001) · 2,200 people · 2019 | 4/6 | SYR4 |
| Dichloroacetic Acid | 14.175 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 15.58 µg/L — TWIN LAKES ESTATES (SC4660007) · 550 people · 2019 | 4/6 | SYR4 |
| Trichloroacetic Acid | 8 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 10.515 µg/L — TWIN LAKES ESTATES (SC4660007) · 550 people · 2019 | 4/6 | SYR4 |
| Dibromoacetic Acid | 8.6 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019
Highest in the city: 9.575 µg/L — TWIN LAKES ESTATES (SC4660007) · 550 people · 2019 | 4/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.2 pCi/L 55% of the EPA limit 15 pCi/L Highest in the city: WHITLEY ESTATES (4660055) · 93 people · 2018 | 2/6 | SYR4 |
| Monobromoacetic Acid | 7.568 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2019 | 3/6 | SYR4 |
| Combined Uranium | 3.8495 µg/L 13% of the EPA limit 30 µg/L Highest in the city: WHITLEY ESTATES (4660055) · 93 people · 2015 | 2/6 | SYR4 |
| Selenium | 3.065 µg/L 6.1% of the EPA limit 50 µg/L Highest in the city: FERN FOREST MHP (SC4660001) · 99 people · 2018 | 1/6 | SYR4 |
| Combined Radium (-226 And -228) | 1.985 pCi/L 40% of the EPA limit 5 pCi/L Highest in the city: WHITLEY ESTATES (4660055) · 93 people · 2018 | 1/6 | SYR4 |
| 1,2-Dichloroethane | 1.53 µg/L 31% of the EPA limit 5 µg/L Highest in the city: FERN FOREST MHP (SC4660001) · 99 people · 2019 | 1/6 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2024
Highest in the city: 0.0060 mg/L — WHITLEY ESTATES (4660055) · 93 people · 2021 | 6/6 | LCR |
| Pfpea | 0.0046 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2024 | 1/6 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: FORT MILL TOWN OF (SC4610003) · 25,000 people · 2024 | 1/6 | UCMR-5 |
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 Fort Mill
| Supplier | Population served |
|---|---|
| FORT MILL TOWN OF (SC4610003) | 25,000 |
| RIVERVIEW RURAL CWS (SC4620001) | 2,200 |
| BGWC FOXWOOD (SC4650008) | 570 |
| TWIN LAKES ESTATES (SC4660007) | 550 |
| FERN FOREST MHP (SC4660001) | 99 |
| WHITLEY ESTATES (4660055) | 93 |
Frequently asked questions about Fort Mill tap water
Is Fort Mill tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Fort Mill. 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 Fort Mill?
6 public water suppliers report drinking-water monitoring for Fort Mill, South Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Fort Mill's water?
The contaminants EPA monitoring detected in Fort Mill include Nitrate, Fluoride, Copper, Nitrate-Nitrite, TTHM. 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.