What was found in ZIP 29483
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 575 µg/L 14% of the EPA limit 4000 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 2325 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 2/4 | SYR4 |
| Nitrate | 520 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019 | 1/4 | SYR4 |
| Copper | 138.5 µg/L 11% of the EPA limit 1300 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2018 | 4/4 | SYR4 |
| Nitrate-Nitrite | 100 µg/L 1% of the EPA limit 10000 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2017 | 1/4 | SYR4 |
| TTHM | 26.075 µg/L 33% of the EPA limit 80 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 45.4935 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.5 µg/L 59% of the EPA limit 60 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 40.86 µg/L — SUMMERVILLE CPW (SC1810003) · 81,750 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 26.519 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 26.7 µg/L — SUMMERVILLE CPW (SC1810003) · 81,750 people · 2019 | 4/4 | SYR4 |
| Bromoform | 14.0875 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 23.418 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 3/4 | SYR4 |
| Chloroform | 12.703 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 22.911 µg/L — DCWA CALOMET VALLEY (1850009) · 275 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 6.62 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 16.448 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 7.971 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 13.962 µg/L — DCWA CALOMET VALLEY (1850009) · 275 people · 2019 | 4/4 | SYR4 |
| Lithium | 12.7 µg/L No EPA limit set Highest in the ZIP: DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 1/4 | UCMR-5 |
| Monochloroacetic Acid | 11.54 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 4.608 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 11.506 µg/L — DCWA CALOMET VALLEY (1850009) · 275 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 3.708 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 10.7635 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 4/4 | SYR4 |
| Lead | 9.87 µg/L 66% of the EPA limit 15 µg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2018 | 4/4 | SYR4 |
| Dibromoacetic Acid | 8.2815 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2019
Highest in the ZIP: 9.808 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 4/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.4 µg/L 23% of the EPA limit 6 µg/L Highest in the ZIP: DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2019 | 1/4 | SYR4 |
| PFOS | 0.0065 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2025
Highest in the ZIP: 0.0081 µg/L — SUMMERVILLE CPW (SC1810003) · 81,750 people · 2025 | 4/4 | UCMR-5 |
| Pfpea | 0.0047 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2025
Highest in the ZIP: 0.0072 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 4/4 | UCMR-5 |
| Pfba | 0.0070 µg/L No EPA limit set Highest in the ZIP: DCWA CALOMET VALLEY (1850009) · 275 people · 2023 | 3/4 | UCMR-5 |
| PFOA | 0.0044 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2025
Highest in the ZIP: 0.0065 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 4/4 | UCMR-5 |
| Hfpo-Da | 0.0062 µg/L No EPA limit set Highest in the ZIP: DCWA CALOMET VALLEY (1850009) · 275 people · 2023 | 1/4 | UCMR-5 |
| Pfhxa | 0.0043 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2025
Highest in the ZIP: 0.0062 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 4/4 | UCMR-5 |
| PFBS | 0.0038 µg/L No EPA limit set Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2025
Highest in the ZIP: 0.0046 µg/L — DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 4/4 | UCMR-5 |
| Lead | 0.0035 mg/L 23% of the EPA limit 0.0150 mg/L Main supplier: CHARLESTON WATER SYSTEM (SC1010001) · 327,422 people · 2024 | 4/4 | LCR |
| Pfhpa | 0.0030 µg/L No EPA limit set Highest in the ZIP: DCWA KNIGHTSVILLE (SC1820001) · 40,141 people · 2025 | 1/4 | 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.
Water suppliers serving ZIP 29483
| Supplier | State | Population served |
|---|---|---|
| CHARLESTON WATER SYSTEM (SC1010001) | SC | 327,422 |
| SUMMERVILLE CPW (SC1810003) | SC | 81,750 |
| DCWA KNIGHTSVILLE (SC1820001) | SC | 40,141 |
| DCWA CALOMET VALLEY (1850009) | SC | 275 |
Frequently asked questions about ZIP 29483 tap water
Is the tap water in ZIP 29483 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 29483. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 29483?
4 public water suppliers report EPA drinking-water monitoring for ZIP 29483. Each is listed above with its population served.
What contaminants are in ZIP 29483's water?
EPA monitoring detected Fluoride, Nitrate, Copper, Nitrate-Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.