# Durham, NC — Drinking Water Quality

> Contaminant levels for the Durham, NC public water system, transcribed from its annual Consumer Confidence Report and compared to federal limits.

- Page: https://www.thewatermap.com/water/durham-nc
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved by a human
- Contaminants measured: 8
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Federal limit | Status |
|---|---|---|---|---|
| Chlorine | Disinfectants | 0.3–2.5 mg/L (Range) | 4 mg/L (MRDLG) | Approaching the limit |
| HAA5 | Disinfection byproducts | 11 ug/L (Running Annual Avg) | 60 ug/L (MCL) | Within the limit |
| TTHM | Disinfection byproducts | 21 ug/L (Running Annual Avg) | 80 ug/L (MCL) | Within the limit |
| Fluoride | Inorganic chemicals | 0.11 mg/L (Reported Level) | 4 mg/L (MCLG) | Within the limit |
| Copper | Metals | 0–0.392 mg/L (Range) | 1.3 mg/L (MCLG) | Within the limit |
| Lead | Metals | 0–5 ug/L (Range) | 0 ug/L (MCLG) | Detected — no federal limit |
| Sodium | Metals | 54.1 mg/L (Reported Level) | No federal limit | Detected — no federal limit |
| Xylenes | VOCs & pesticides | 0.00079 mg/L (Reported Level) | 10 mg/L (MCLG) | Within the limit |

_Figures are the utility's own published numbers. Generated 2026-05-21 from thewatermap.com._