EWG Tap Water Database
Chapel Hill water quality
- Source
- University Lake / Cane Creek
- Hardness
- 6–9 GPG
- Disinfected with
- chlorine
What's in Chapel Hill tap water
| Contaminant | Detected | Health guideline | Legal limit | Over guideline |
|---|---|---|---|---|
| Total Trihalomethanes Disinfection ByproductLinked to bladder cancer and reproductive harm. | 44.6 ppb | 0.15 ppb | 80 ppb | 297× |
| Haloacetic Acids (HAA5) Disinfection ByproductFive chlorination byproducts linked to cancer and developmental harm. | 18.3 ppb | 0.1 ppb | 60 ppb | 183× |
| Dichloroacetic Acid Disinfection ByproductHAA byproduct linked to liver tumors and developmental harm. | 11.2 ppb | 0.4 ppb | No legal limit | 28× |
| Combined Radium RadiologicalRadioactive element that concentrates in bones; linked to bone cancer with prolonged exposure. | 1.24 pCi/L | 0.05 pCi/L | 5 pCi/L | 25× |
| Nitrate AgriculturalAgricultural runoff contaminant linked to blue baby syndrome in infants and adult cancer risk. | 2.80 ppm | 0.14 ppm | 10 ppm | 20× |
Figures from the EWG Tap Water Database.
Honest Water in Chapel Hill
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Chapel Hill water questions
- Is Chapel Hill water hard?
- Chapel Hill water runs about 6–9 GPG. That is hard enough to leave scale on fixtures, spot glassware, and shorten the life of water heaters and dishwashers.
- What is Chapel Hill water treated with?
- Chapel Hill's supply comes from University Lake / Cane Creek and is disinfected with chlorine. Free chlorine is comparatively easy to remove with quality carbon filtration.
- Where do these Chapel Hill water figures come from?
- The EWG Tap Water Database, which compiles the utility's own state-reported testing results.
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