Nashville, Tennessee Tap Water Quality Report
Serving utility: Nashville Water Department #1
Updated March 2026 • Data from EWG Tap Water Database & EPA SDWIS
Notable Concerns
Nashville tap water has 7 contaminants exceeding EWG health guidelines, including Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs). Additionally, 7 known or suspected carcinogens were detected, including Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs).
Water Provider Information
Contaminants Detected
| Contaminant | Detected Level | EWG Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Haloacetic acids (HAA9) carcinogen | 33.90 ppb | 0.06 ppb | No legal limit | Above guideline |
| Haloacetic acids (HAA5) carcinogen | 20.40 ppb | 0.10 ppb | 60 ppb | Above guideline |
| Total trihalomethanes (TTHMs) carcinogen | 27.30 ppb | 0.15 ppb | 80 ppb | Above guideline |
| Bromodichloromethane carcinogen | 1.60 ppb | 0.06 ppb | No legal limit | Above guideline |
| Chloroform carcinogen | 4.36 ppb | 0.40 ppb | No legal limit | Above guideline |
| Chromium (hexavalent) carcinogen | 0.08 ppb | 0.02 ppb | No legal limit | Above guideline |
| Nitrate carcinogen | 0.41 ppm | 0.14 ppm | 10 ppm | Above guideline |
| Fluoride | 0.67 ppm | N/A | 4 ppm | Below guideline |
| Manganese | 0.32 ppb | 100 ppb | No legal limit | Below guideline |
| Strontium | 0.10 ppb | 1,500 ppb | No legal limit | Below guideline |
| Vanadium | 0.21 ppb | 21 ppb | No legal limit | Below guideline |
Health Context
Haloacetic acids (HAA9) carcinogen
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Haloacetic acids (HAA5) carcinogen
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Total trihalomethanes (TTHMs) carcinogen
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Bromodichloromethane carcinogen
Bromodichloromethane is a trihalomethane (THM) disinfection byproduct that damages liver and kidneys with chronic exposure. EPA classifies it as a probable human carcinogen based on animal carcinogenicity data.
Chloroform carcinogen
Chloroform is the most abundant trihalomethane (THM) disinfection byproduct and a probable human carcinogen that accumulates in body tissues. Chronic exposure increases colorectal and bladder cancer risk and causes liver/kidney damage.
Recommended Filtration for This Water
Echo RO System
Reverse osmosis filtration removes up to 99.9% of contaminants including heavy metals, PFAS, disinfection byproducts, and more. The gold standard for drinking water purification.
View RO SystemsEcho Whole-Home Filter
Filters water at every tap in your home. Reduces chlorine, VOCs, and disinfection byproducts from your shower, bath, and kitchen water.
View Whole-Home FiltersEcho Hydrogen Water Flask
Once your water is clean, supercharge it. Molecular hydrogen is the smallest, most bioavailable antioxidant — shown to reduce inflammation, boost energy, and support cellular health.
Shop Hydrogen FlaskFrequently Asked Questions
Is Nashville tap water safe to drink?
Nashville tap water meets EPA legal standards for drinking water. However, 7 contaminants exceed stricter EWG health guidelines, and 7 known carcinogens were detected. While legally compliant, additional filtration is recommended for optimal safety.
What contaminants are in Nashville water?
A total of 11 contaminants were detected in Nashville tap water, including Haloacetic acids (HAA9), Haloacetic acids (HAA5). Of these, 7 exceed EWG health guidelines.
What's the best water filter for Nashville?
For Nashville tap water, we recommend a reverse osmosis (RO) system for drinking water — it removes up to 99.9% of contaminants including heavy metals, PFAS, and disinfection byproducts. For shower and bath water, a whole-home filtration system reduces chlorine and volatile organics.
Where does Nashville get its water?
Nashville tap water is provided by Nashville Water Department #1, serving approximately 755,890 people. For detailed source water information, contact your local utility or visit the EPA's SDWIS database.
Nearby City Water Reports
Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)
Last updated: March 2026
Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.
