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Tap water quality report

Mobile, AL

EPA monitoring detected 18 contaminants across the 1 water supplier serving Mobile. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
279,000
people served
18
contaminants found
Alabama rankings Lead in Alabama PFAS in Alabama

What was found in Mobile's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1060 µg/L 27%
of the EPA limit 4000 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Chlorite
580 µg/L 58%
of the EPA limit 1000 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Nitrate
237 µg/L 2.4%
of the EPA limit 10000 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Nitrate-Nitrite
229 µg/L 2.3%
of the EPA limit 10000 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
TTHM
60.92 µg/L 76%
of the EPA limit 80 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
40.22 µg/L 67%
of the EPA limit 60 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Copper
35.85 µg/L 2.8%
of the EPA limit 1300 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Barium
29.4 µg/L 1.5%
of the EPA limit 2000 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Chloroform
14.63 µg/L
No EPA limit set
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
3.93 pCi/L 26%
of the EPA limit 15 pCi/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Bromodichloromethane
3.81 µg/L
No EPA limit set
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Lead
2.55 µg/L 17%
of the EPA limit 15 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Gross Beta Particle Activity
2.165 pCi/L
No EPA limit set
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.59 pCi/L 32%
of the EPA limit 5 pCi/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Dibromochloromethane
0.8000 µg/L
No EPA limit set
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Arsenic
0.6300 µg/L 6.3%
of the EPA limit 10 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Ethylene Dibromide
0.0300 µg/L 60%
of the EPA limit 0.0500 µg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2019
1/1 SYR4
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
Main supplier: MOBILE, BD. OF W&S COMM. OF THE CITY OF · 279,000 people · 2025
1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Mobile

SupplierPopulation served
MOBILE, BD. OF W&S COMM. OF THE CITY OF 279,000

Frequently asked questions about Mobile tap water

Is Mobile tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Mobile. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Mobile?

1 public water supplier report drinking-water monitoring for Mobile, Alabama to the EPA. Each is listed above with its population served.

What contaminants are in Mobile's water?

The contaminants EPA monitoring detected in Mobile include Fluoride, Chlorite, Nitrate, Nitrate-Nitrite, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.