Arsenic in Drinking Water in Alabama
What residents of Alabama need to know about arsenic in drinking water — including natural geological sources, private well risk, which utilities have documented violations, and how to remove arsenic from tap water.
Source: EPA SDWIS, Alabama Department of Environmental Management, USGS · Last reviewed: 2025-01-01
Quick Answer
Is arsenic in drinking water a concern in Alabama?
Arsenic is a moderate concern in Alabama, primarily for private well owners in areas underlain by crystalline bedrock and Cretaceous-age sedimentary formations in the central and southern parts of the state. Public water systems generally maintain compliance with the 10 ppb MCL, but private wells in geological hotspot counties go unregulated and untested unless the owner acts.
Where does arsenic come from in Alabama's water?
The primary arsenic exposure route in Alabama is private well water in counties underlain by arsenic-bearing geological formations. Public water utilities drawing from the Mobile River Basin and other surface water sources typically have lower arsenic concentrations, but groundwater systems in central Alabama's Black Belt region and areas with Cretaceous marine sediments can have elevated naturally occurring arsenic.
What should Alabama residents know?
Private well owners in Alabama's Black Belt region, the Piedmont area of eastern Alabama, and areas with Cretaceous marine sedimentary geology should test their wells for arsenic. Alabama has no special arsenic monitoring program beyond federal SDWA requirements. Standard pitcher filters do not remove arsenic — reverse osmosis or activated alumina is required.
Key Facts
| EPA MCL | 10 µg/L (10 ppb) |
| MCLG | Zero — no established safe level |
| Primary source | Naturally occurring in Cretaceous marine sediments and crystalline bedrock formations |
| State regulator | Alabama Department of Environmental Management (ADEM) |
| Private well risk | Unregulated — owners must test and treat independently |
| Health effects | Bladder, lung, and skin cancer; cardiovascular disease; diabetes risk |
| Does boiling remove arsenic? | No — boiling concentrates arsenic. Use reverse osmosis or activated alumina. |
| Effective treatment | Reverse osmosis (NSF/ANSI 58) or activated alumina filters |
Why Arsenic Matters in Alabama
Alabama's arsenic concerns are largely geological in origin. The state's varied geology — from crystalline Piedmont rocks in the east to Cretaceous marine sediments in the Black Belt — creates localized arsenic occurrence in groundwater. Private well owners in these areas face unregulated exposure. Alabama's Black Belt region, already facing significant water infrastructure challenges, may have limited access to testing and treatment resources.
Alabama Arsenic Program
Alabama ADEM monitors for arsenic under the federal SDWIS framework. Arsenic is not a primary concern in most of Alabama — the state's geology (Coastal Plain sediments in the south, crystalline basement in the north) presents low-to-moderate natural arsenic occurrence. Private well owners in northern Alabama near crystalline rock formations should test if they have not done so.
Alabama Utilities With Arsenic Violation Records
The utilities listed below have at least one arsenic violation on record in EPA's SDWIS database. Violations may be open or resolved — see individual utility pages for current status and risk level.
Auburn Water Works
Alabama · 65,313 served
City of Fairhope
Alabama · 59,850 served
City of Enterprise, the Wwb of the
Enterprise · 48,000 served
South Alabama Utilities Water System
Alabama · 39,249 served
City of Daphne, Utilities Board of the
Alabama · 33,372 served
North Baldwin Utilities
Bay Minette · 28,713 served
City of Selma, the Ww and Sb of the
Selma · 21,834 served
Leeds Water Works Board
Leeds · 21,300 served
City of Talladega Water & Sewer Board
Talladega · 20,250 served
Douglas, Water & Fpa of
Douglas · 19,179 served
How Does Arsenic Get Into Drinking Water?
Arsenic in drinking water is almost always naturally occurring — it leaches from arsenic-bearing rocks and minerals into groundwater over time. New England granite, Southwest volcanic geology, and Upper Midwest glacial aquifers are the primary high-risk formations. It has no taste, odor, or color.
Full arsenic overview — geology maps, health effects, all 50 statesWho Should Pay Closest Attention
Private well owners in Crenshaw, Butler, Lowndes, Wilcox, and Dallas counties in the Black Belt, and in Cleburne, Randolph, and Clay counties in the eastern Piedmont, should prioritize arsenic testing. Low-income rural residents in these areas may have limited access to point-of-use treatment.
Private well owners near mining districts or agricultural areas
Residents in states with documented volcanic or geothermal geology
Long-term consumers of water from small groundwater systems
Households in homes built before 1960 with older well casings
Residents whose well water has never been tested for arsenic
Anyone living in a state where bedrock wells are common
How to Check Your Situation in Alabama
- 1
Identify your water source. If you use a public utility, use the ZIP lookup on this page to find your system and check its compliance record.
- 2
If on public water, review your utility's most recent Consumer Confidence Report (CCR) for arsenic monitoring data. The MCL is 10 ppb — your report should show recent test results.
- 3
If on a private well, order an arsenic test from a Alabama Department of Environmental Management-certified laboratory. A basic arsenic test costs $15–$40. The state agency website maintains a certified lab list.
- 4
Test your well at the tap — not just at the wellhead. The entire water distribution system within your home can affect water quality.
- 5
If your test shows arsenic above 5 ppb, install certified treatment immediately. If above 10 ppb, do not use the water for drinking or cooking until treatment is installed.
- 6
Retest after installing treatment to confirm it is working as certified. Replace filter media on the manufacturer's schedule — an exhausted filter may not perform as rated.
Treatment Options for Arsenic
Boiling does not remove arsenic — it concentrates it. Standard activated carbon filters (Brita, etc.) do not effectively remove arsenic. Certified treatment is required.
NSF/ANSI Standard 58 — Reverse Osmosis
RO systems certified to NSF/ANSI 58 remove 85–95% of arsenic. Under-sink installation. Most effective for removing multiple contaminants simultaneously. Replace membranes and pre-filters on schedule.
Activated Alumina Filters
Activated alumina is specifically designed for arsenic and fluoride removal. Point-of-use or whole-house options available. Must be certified by NSF International or WQA for arsenic reduction. Requires periodic media regeneration or replacement.
Iron/Manganese Oxidation Filters
Effective for arsenic in iron-rich well water, which is common in the Midwest and New England. Oxidation converts dissolved iron and arsenic to a form that can be filtered out. Best when arsenic is co-occurring with high iron levels.
What does NOT work for arsenic
Standard activated carbon filters (Brita, refrigerator filters, most pitcher filters) do NOT effectively remove arsenic. Boiling concentrates arsenic. Water softeners do not remove arsenic. Only use products with NSF certification specifically for arsenic reduction.
Take Action Now
If you use a private well in Alabama, test for arsenic — especially if you are in a region with granite, volcanic, or sedimentary geology. A basic arsenic test costs $15–$40 at a state-certified lab.
Public water users: check your utility's Consumer Confidence Report (CCR) for arsenic results. The EPA MCL is 10 ppb — any detection warrants attention.
If arsenic is detected above 10 ppb (or even below it, given MCLG is zero), install an NSF/ANSI 58-certified reverse osmosis system for drinking and cooking water.
Standard carbon filters do NOT remove arsenic — do not rely on a Brita or refrigerator filter for arsenic protection.
Frequently Asked Questions
Related Pages
Arsenic — National Overview
All U.S. utilities with arsenic records
Alabama State Overview
All utilities and water quality data
Alabama Well Water Guide
Testing, risks & certified labs for private wells
Reverse Osmosis Guide
Removes 85–95% of arsenic
Best Arsenic Filter Guide
What actually works (carbon doesn't)
PFAS in Drinking Water
The 'forever chemical' contamination overview
All Contaminants
Complete reference library
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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Alabama Department of Environmental Management ↗