Memphis, Tennessee Tap Water Quality Report
Serving utility: Memphis Light, Gas, & Water
Updated March 2026 • Data from EWG Tap Water Database & EPA SDWIS
Notable Concerns
Memphis tap water has 9 contaminants exceeding EWG health guidelines, including Total trihalomethanes (TTHMs), Bromodichloromethane, Haloacetic acids (HAA9). Additionally, 11 known or suspected carcinogens were detected, including Total trihalomethanes (TTHMs), Bromodichloromethane, Haloacetic acids (HAA9).
Water Provider Information
Contaminants Detected
| Contaminant | Detected Level | EWG Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Total trihalomethanes (TTHMs) carcinogen | 6.75 ppb | 0.15 ppb | 80 ppb | Above guideline |
| Bromodichloromethane carcinogen | 2.46 ppb | 0.06 ppb | No legal limit | Above guideline |
| Haloacetic acids (HAA9) carcinogen | 1.58 ppb | 0.06 ppb | No legal limit | Above guideline |
| Dibromochloromethane carcinogen | 1.74 ppb | 0.10 ppb | No legal limit | Above guideline |
| Radium, combined (-226 and -228) | 0.85 pCi/L | 0.05 pCi/L | 5 pCi/L | Above guideline |
| Chloroform carcinogen | 2.50 ppb | 0.40 ppb | No legal limit | Above guideline |
| Haloacetic acids (HAA5) carcinogen | 0.43 ppb | 0.10 ppb | 60 ppb | Above guideline |
| Dichloroacetic acid carcinogen | 0.38 ppb | 0.20 ppb | No legal limit | Above guideline |
| Nitrate carcinogen | 0.21 ppm | 0.14 ppm | 10 ppm | Above guideline |
| 1,4-Dioxane carcinogen | 0.01 ppb | 0.35 ppb | No legal limit | Below guideline |
| Aluminum | 3.59 ppb | 600 ppb | No legal limit | Below guideline |
| Barium | 40.20 ppb | 700 ppb | 2,000 ppb | Below guideline |
| Bromoform carcinogen | 0.05 ppb | 0.50 ppb | No legal limit | Below guideline |
| Chlorate | 71 ppb | 210 ppb | No legal limit | Below guideline |
| Chromium (hexavalent) carcinogen | 0.01 ppb | 0.02 ppb | No legal limit | Below guideline |
| Fluoride | 0.17 ppm | N/A | 4 ppm | Below guideline |
| Manganese | 2.31 ppb | 100 ppb | No legal limit | Below guideline |
| Monochloroacetic acid | 0.06 ppb | 53 ppb | No legal limit | Below guideline |
| Strontium | 0.04 ppb | 1,500 ppb | No legal limit | Below guideline |
Health Context
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.
Haloacetic acids (HAA9) carcinogen
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Dibromochloromethane carcinogen
Dibromochloromethane is a trihalomethane (THM) that may increase cancer risk and cause liver and kidney damage with chronic exposure at elevated levels.
Radium, combined (-226 and -228)
Exposure to elevated levels of this contaminant may pose health risks. See EWG and EPA guidelines for more information.
Recommended Filtration for This Water
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Shop Hydrogen FlaskFrequently Asked Questions
Is Memphis tap water safe to drink?
Memphis tap water meets EPA legal standards for drinking water. However, 9 contaminants exceed stricter EWG health guidelines, and 11 known carcinogens were detected. While legally compliant, additional filtration is recommended for optimal safety.
What contaminants are in Memphis water?
A total of 19 contaminants were detected in Memphis tap water, including Total trihalomethanes (TTHMs), Bromodichloromethane. Of these, 9 exceed EWG health guidelines.
What's the best water filter for Memphis?
For Memphis 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 Memphis get its water?
Memphis tap water is provided by Memphis Light, Gas, & Water, serving approximately 659,500 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.
