Tap Water Quality Report
Tap water quality in HUNTSVILLE, Alabama
Tap water in HUNTSVILLE, Alabama receives a grade of C (76/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily MADISON COUNTY WATER DEPARTMENT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in HUNTSVILLE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving HUNTSVILLE.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 47.8 ppb, 797x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 33.0 ppb, 330x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 34.3 ppb, 228x above the EWG health guideline of 0.15 ppb.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.404 ppt, 404x above the EWG health guideline of 0.001 ppt.
EPA compliance record
Official U.S. EPA records for MADISON COUNTY WATER DEPARTMENT (system ID AL0000888) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Synthetic Organic Chemicals | Missed testing or reporting | 01/11/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Water systems serving HUNTSVILLE
HUNTSVILLE is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
MADISON COUNTY WATER DEPARTMENT
- Haloacetic acids (HAA9) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
HUNTSVILLE UTILITIES WATER DEPT.
- PFAS contamination
- Haloacetic acids (HAA9) significantly above health guideline
- Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Recommended filters for HUNTSVILLE
Filters matched to the specific contaminants in HUNTSVILLE's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in HUNTSVILLE's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
47.8 ppb | 0.06 | — | — | — | — | — | 797× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.404 ppt | 0.001 | 10.0 | — | — | — | — | 404× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
33.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 330× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
34.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 228× over |
| Nitrate Inorganic |
2.77 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 20× over |
| Nitrate and nitrite Inorganic |
2.87 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 20× over |
| Bromodichloromethane Disinfection byproduct |
1.06 ppb | 0.06 | — | — | — | — | — | 18× over |
| Chloroform Disinfection byproduct |
5.06 ppb | 0.4 | — | — | — | — | — | 13× over |
| Chromium (hexavalent) Heavy metal |
0.234 ppb | 0.02 | — | — | — | — | — | 12× over |
| Tetrachloroethylene (perchloroethylene) Volatile organic compound |
0.544 ppb | 0.06 | 5.0 | — | — | — | — | 9.1× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.605 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 6.7× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
1.95 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 6.5× over |
| Chlorate Disinfection byproduct |
139.6 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Heptachlor epoxide Other |
0.00342 ppb | 0.006 | 0.2 | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.125 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Chloromethane Other |
0.171 ppb | 2.69 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
30.1 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Barium Heavy metal |
22.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
1.39 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
0.275 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
3.01 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.105 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
2.71 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.658 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.6 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0859 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.507 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from MADISON COUNTY WATER DEPARTMENT.