What was found in Siler City'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 |
|---|---|---|---|
| Fluoride | 793.5 µg/L 20% of the EPA limit 4000 µg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Copper | 454 µg/L 35% of the EPA limit 1300 µg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| TTHM | 69.2 µg/L 87% of the EPA limit 80 µg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 58.235 µg/L 97% of the EPA limit 60 µg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Chloroform | 53.355 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 32.375 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 27.625 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 11.11 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Lead | 9.2 µg/L 61% of the EPA limit 15 µg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.575 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.275 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0121 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0047 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0034 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0032 µg/L No EPA limit set Main supplier: SILER CITY, TOWN OF · 8,520 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SILER CITY, TOWN OF · 8,520 people · 2025 | 1/1 | LCR |
Water suppliers serving Siler City
| Supplier | Population served |
|---|---|
| SILER CITY, TOWN OF | 8,520 |
Frequently asked questions about Siler City tap water
Is Siler City tap water safe to drink?
EPA testing detected 16 contaminants in the water serving Siler City. 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 Siler City?
1 public water supplier report drinking-water monitoring for Siler City, North Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Siler City's water?
The contaminants EPA monitoring detected in Siler City include Fluoride, Copper, TTHM, Total Haloacetic Acids (HAA5), 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.