Drinking water quality · 2024
· Verified
What's in Mobile, AL tap water
78 contaminants were measured in the Mobile, AL water system's 2024 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 78
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Hexachlorocyclopentadiene
- Service area
- AL
2.2× the limit
state-level CCR
At or above the federal limit
Where your water comes from · EPA SDWIS
Mobile, AL's drinking water comes from surface water, drawn from 3 sources.
Source
3surface water
- J.B. CONVERSE LAKE · 2
- MOBILE RIVER BUCKS PUMPING STATION
Treatment
2treatment plants
- E.M. STICKNEY TREATMENT FACILITY
- H.E. MYERS TREATMENT FACILITY
Distribution
15storage units
Also buys water from SARALAND, BD OF W&S COMMISSIONERS, SOUTH ALABAMA UTILITIES WATER SYSTEM, and 1 more.
Source: EPA SDWIS facilities inventory. Methodology.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based2 violations on record · most recent Jul 2023resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Hexachlorocyclopentadiene | 0.11 mg/LHighest single sampleDetect | None set | At or above the limit |
| Alachlor | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Carbofuran | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Carbon Tetrachloride | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Chlordane | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Chlorobenzene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Chromium | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Dinoseb | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Diquat | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Edb | Not detected ng/LReported levelSystem-wide | 5000000 ng/LMCL | None detected |
| Endothall | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Endrin | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Glyphosate | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Heptachlor | Not detected ng/LReported levelSystem-wide | None set | None detected |
| Heptachlor Epoxide | Not detected ng/LReported levelSystem-wide | None set | None detected |
| Hexachlorobenzene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Lindane | Not detected ng/LReported levelSystem-wide | None set | None detected |
| Methoxychlor | Not detected ug/LReported levelSystem-wide | None set | None detected |
| O Dichlorobenzene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Oxamyl | Not detected ug/LReported levelSystem-wide | None set | None detected |
| P Dichlorobenzene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Pce | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Pentachlorophenol | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Picloram | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Styrene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Tce | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Toxaphene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Vinyl Chloride | Not detected ug/LReported levelSystem-wide | None set | None detected |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorite | 0.78 mg/LReported levelSystem-wide | 1 mg/LMCL | Within the limit |
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 6Reported levelSystem-wide | None set | Detected — no federal limit |
| BromodichloromethaneA trihalomethane disinfection byproduct. | 1.9Highest single sampleDetect | None set | Detected — no federal limit |
| ChloroformA trihalomethane formed when chlorine reacts with organic matter in water. | 4.3Highest single sampleDetect | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Asbestos | 5 MFLReported levelSystem-wide | 7 MFLMCL | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.84 mg/LReported levelSystem-wide | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.18 mg/LReported levelSystem-wide | 10 mg/LMCL | Within the limit |
| Cyanide | Not detected ug/LReported levelSystem-wide | None set | None detected |
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected mg/LReported levelSystem-wide | 1 mg/LMCL | None detected |
| ChlorideA naturally occurring salt compound. | 7.8 mg/LHighest single sampleDetect | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 29.5 mg/LHighest single sampleDetect | None set | Detected — no federal limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 2 ng/LMaximumDetect | 0 ng/LMCLG | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.0065 mg/L90th percentileAt the tap | 0.015 mg/LAction level | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.0031–0.18 mg/LRangeSystem-wide | 1.3 mg/LMCLG | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.034 mg/LReported levelSystem-wide | 2 mg/LMCL | Within the limit |
| Antimony | Not detected ug/LReported levelSystem-wide | None set | None detected |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Beryllium | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Cadmium | Not detected ug/LReported levelSystem-wide | None set | None detected |
| MercuryA toxic metal from erosion of natural deposits and industrial runoff. | Not detected ug/LReported levelSystem-wide | None set | None detected |
| SeleniumA trace element from natural deposits and industrial discharge. | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Thallium | Not detected ug/LReported levelSystem-wide | None set | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 0.3 mg/LHighest single sampleDetect | None set | Detected — no federal limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 16.3Highest single sampleDetect | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 1.2Highest single sampleDetect | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 3.9Highest single sampleDetect | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 4 ug/LReported levelSystem-wide | 30 ug/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.004–0.6308 pCi/LRangeSystem-wide | 0 pCi/LMCLG | Within the limit |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0.425–1.25 pCi/LRangeSystem-wide | 0 pCi/LMCLG | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 1.95Highest single sampleDetect | 0MCLG | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 50 ug/LReported levelSystem-wide | None set | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0 %Reported levelSystem-wide | None set | None detected |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AtrazineA widely used agricultural herbicide that reaches water through runoff. | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Benzo(a)pyrene | Not detected ng/LReported levelSystem-wide | None set | None detected |
| Dalapon | Not detected ug/LReported levelSystem-wide | 200 ug/LMCL | None detected |
| DBCP1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide. | Not detected ng/LReported levelSystem-wide | None set | None detected |
| Dichloromethane | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Ethylbenzene | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Simazine | Not detected ug/LReported levelSystem-wide | None set | None detected |
| Toluene | Not detected mg/LReported levelSystem-wide | 1 mg/LMCL | None detected |
| Benzene | 11Reported levelColumn 3 | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AlkalinityA measure of the water's capacity to neutralize acids. | 8.3Highest single sampleDetect | None set | Detected — no federal limit |
| ColorA measure of visible tint in the water. | 5Highest single sampleDetect | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 45.5Highest single sampleDetect | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 8.1Highest single sampleDetect | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 130Highest single sampleDetect | None set | Detected — no federal limit |
| TemperatureThe measured temperature of the water sample. | 33Highest single sampleDetect | None set | Detected — no federal limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 11Reported levelSystem-wide | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 90 mg/LHighest single sampleDetect | None set | Detected — no federal limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 1Reported levelSystem-wide | None set | Detected — no federal limit |
Source: Mobile, AL's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about Mobile, AL's water
+Is Mobile, AL tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Mobile, AL water utility lists 1 contaminant at or above the federal limit: Hexachlorocyclopentadiene. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Mobile, AL tap water?
78 contaminants were measured in Mobile, AL's 2024 Consumer Confidence Report, spanning other, metals, and physical & aggregate. 16 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Mobile, AL tap water?
One contaminant in Mobile, AL's 2024 report sits at or above the federal limit: Hexachlorocyclopentadiene (2.2× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Mobile, AL tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Hexachlorocyclopentadiene, at 2.2× the federal threshold. It belongs to the other family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Mobile, AL's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Mobile, AL's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.