What was found in North Charleston'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 | 104 µg/L 8% of the EPA limit 1300 µg/L Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2018 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 45.69 µg/L 76% of the EPA limit 60 µg/L Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Lead | 33.75 µg/L 225% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 29.241 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| TTHM | 19.202 µg/L 24% of the EPA limit 80 µg/L Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 9.284 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Chloroform | 8.65259 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 8.24 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Bromoform | 8.1305 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7.0665 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 5.082 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 4.501 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 4.01 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0055 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0048 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0043 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0042 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0036 µg/L No EPA limit set Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L Main supplier: DCWS ASHLEY PHOSPHATE (SC1820008) · 26,536 people · 2024 | 1/1 | LCR |
Water suppliers serving North Charleston
| Supplier | Population served |
|---|---|
| DCWS ASHLEY PHOSPHATE (SC1820008) | 26,536 |
Frequently asked questions about North Charleston tap water
Is North Charleston tap water safe to drink?
EPA testing detected 19 contaminants in the water serving North Charleston. 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 North Charleston?
1 public water supplier report drinking-water monitoring for North Charleston, South Carolina to the EPA. Each is listed above with its population served.
What contaminants are in North Charleston's water?
The contaminants EPA monitoring detected in North Charleston include Copper, Total Haloacetic Acids (HAA5), Lead, Dichloroacetic Acid, 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.