Tap Water Quality Report
Tap water quality in MOBILE, Alabama
Tap water in MOBILE, Alabama receives a grade of F (53/100) from TapWaterSafety.org. It's served by MOBILE, BD. OF W&S COMM. OF THE CITY OF. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in MOBILE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving MOBILE.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 36.0 ppb, 601x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 45.5 ppb, 303x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 28.1 ppb, 281x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for MOBILE, BD. OF W&S COMM. OF THE CITY OF (system ID AL0001005) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 07/01/2023 | Open |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Contaminant above the legal limit | 07/01/2023 | Open |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 04/01/2025 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for MOBILE
Filters matched to the specific contaminants in MOBILE's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
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 MOBILE'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 |
36.0 ppb | 0.06 | — | — | — | — | — | 601× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
45.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 303× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
28.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 281× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.252 ppt | 0.001 | 10.0 | — | — | — | — | 252× over |
| Bromodichloromethane Disinfection byproduct |
2.23 ppb | 0.06 | — | — | — | — | — | 37× over |
| Chloroform Disinfection byproduct |
7.57 ppb | 0.4 | — | — | — | — | — | 19× over |
| Perfluorooctanoic acid (PFOA) PFAS |
1.21 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 13× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.068 ppt | 0.006 | 10.0 | — | — | — | — | 11× over |
| Chlorite Disinfection byproduct |
452.2 ppb | 50.0 | 1000.0 | — | — | — | — | 9.0× over |
| Radium, combined (-226 and -228) Radiological |
0.32 pCi/L | 0.05 | 5.0 | — | — | — | — | 6.4× over |
| Dibromochloromethane Disinfection byproduct |
0.375 ppb | 0.1 | — | — | — | — | — | 3.8× over |
| Chromium (hexavalent) Heavy metal |
0.0419 ppb | 0.02 | — | — | — | — | — | 2.1× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.6 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.0× over |
| Nitrate and nitrite Inorganic |
0.137 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Nitrate Inorganic |
0.117 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Chlorate Disinfection byproduct |
113.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
167.6 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Beryllium Heavy metal |
0.263 ppb | 1.0 | 4.0 | — | — | 1 | — | Below guideline |
| Barium Heavy metal |
22.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
0.668 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
0.05 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Hexachlorocyclopentadiene Other |
0.00418 ppb | 2.0 | 50.0 | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.826 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.548 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.695 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0368 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.716 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Nitrite Inorganic |
0.02 ppm | — | 1.0 | — | — | — | — | 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 MOBILE, BD. OF W&S COMM. OF THE CITY OF.
General Contact
Treatment Plant
ZIP codes served
MOBILE's public water systems serve the following ZIP codes: