What was found in Winnsboro'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 | 320 µg/L 3.2% of the EPA limit 10000 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 1815 µg/L — MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 1760 µg/L 18% of the EPA limit 10000 µg/L Highest in the city: MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2012 | 1/3 | SYR4 |
| Copper | 180 µg/L 14% of the EPA limit 1300 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2017
Highest in the city: 956.5 µg/L — MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2017 | 3/3 | SYR4 |
| Fluoride | 574 µg/L 14% of the EPA limit 4000 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 2/3 | SYR4 |
| Barium | 51 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 116.4 µg/L — MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2017 | 2/3 | SYR4 |
| TTHM | 79.276 µg/L 99% of the EPA limit 80 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 3/3 | SYR4 |
| Chloroform | 64.01 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 56.65 µg/L 94% of the EPA limit 60 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 58.234 µg/L — MIDCOUNTY WATER DIST 2 (SC2020004) · 3,500 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 30.398 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 31.5355 µg/L — MIDCOUNTY WATER DIST 2 (SC2020004) · 3,500 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 25.608 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 29.5135 µg/L — MIDCOUNTY WATER DIST 2 (SC2020004) · 3,500 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 14.264 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 2/3 | SYR4 |
| Lead | 14 µg/L 93% of the EPA limit 15 µg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2017 | 3/3 | SYR4 |
| Monobromoacetic Acid | 5.952 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.56 pCi/L 37% of the EPA limit 15 pCi/L Highest in the city: MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2018 | 1/3 | SYR4 |
| Combined Uranium | 4.4 µg/L 15% of the EPA limit 30 µg/L Highest in the city: MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2012 | 1/3 | SYR4 |
| Dibromochloromethane | 3.618 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 1.8 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019
Highest in the city: 3.03 µg/L — MIDCOUNTY WATER DIST 2 (SC2020004) · 3,500 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 2.3 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2019 | 3/3 | SYR4 |
| Bromoform | 1.377 µg/L No EPA limit set Highest in the city: MIDCOUNTY WATER DIST 1 (2020002) · 1,487 people · 2019 | 1/3 | SYR4 |
| PFOS | 0.0328 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2024 | 2/3 | UCMR-5 |
| Lead | 0.0120 mg/L 80% of the EPA limit 0.0150 mg/L Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2025 | 3/3 | LCR |
| PFHXS | 0.0090 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2024 | 2/3 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2024 | 2/3 | UCMR-5 |
| Pfpea | 0.0038 µg/L No EPA limit set Main supplier: WINNSBORO TOWN OF (2010001) · 10,391 people · 2024 | 2/3 | 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 Winnsboro
| Supplier | Population served |
|---|---|
| WINNSBORO TOWN OF (2010001) | 10,391 |
| MIDCOUNTY WATER DIST 2 (SC2020004) | 3,500 |
| MIDCOUNTY WATER DIST 1 (2020002) | 1,487 |
Frequently asked questions about Winnsboro tap water
Is Winnsboro tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Winnsboro. 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 Winnsboro?
3 public water suppliers report drinking-water monitoring for Winnsboro, South Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Winnsboro's water?
The contaminants EPA monitoring detected in Winnsboro include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. 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.