We analyzed tap water quality data for hundreds of cities in Alabama to identify the 25 with the most contaminants exceeding health guidelines. This ranking is based on 2026 data from the EPA and EWG databases.
While all public water systems must meet EPA legal limits, many health experts — including the Environmental Working Group — argue that these legal limits are outdated and don't reflect current scientific understanding of safe exposure levels. The cities below have the widest gap between what's in their water and what's considered safe by modern health standards.
Rankings at a Glance
Gadsden, Alabama
Gadsden has 18 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Gadsden water report →Lincoln, Alabama
Lincoln has 18 contaminants exceeding EWG health guidelines out of 22 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Lincoln water report →Pelham, Alabama
Pelham has 17 contaminants exceeding EWG health guidelines out of 44 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Pelham water report →Talladega, Alabama
Talladega has 16 contaminants exceeding EWG health guidelines out of 38 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Talladega water report →Leeds, Alabama
Leeds has 16 contaminants exceeding EWG health guidelines out of 37 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Leeds water report →Columbiana, Alabama
Columbiana has 16 contaminants exceeding EWG health guidelines out of 30 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Columbiana water report →Loachapoka, Alabama
Loachapoka has 15 contaminants exceeding EWG health guidelines out of 31 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Loachapoka water report →Pell City, Alabama
Pell City has 15 contaminants exceeding EWG health guidelines out of 30 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Pell City water report →Phenix City, Alabama
Phenix City has 15 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Phenix City water report →Montevallo, Alabama
Montevallo has 15 contaminants exceeding EWG health guidelines out of 26 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Montevallo water report →Clanton, Alabama
Clanton has 15 contaminants exceeding EWG health guidelines out of 25 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Clanton water report →Tuskegee, Alabama
Tuskegee has 15 contaminants exceeding EWG health guidelines out of 24 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Tuskegee water report →Sylacauga, Alabama
Sylacauga has 14 contaminants exceeding EWG health guidelines out of 31 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Sylacauga water report →Springville, Alabama
Springville has 14 contaminants exceeding EWG health guidelines out of 31 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Springville water report →334-365-3042, Alabama
334-365-3042 has 14 contaminants exceeding EWG health guidelines out of 30 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full 334-365-3042 water report →Tuscumbia, Alabama
Tuscumbia has 14 contaminants exceeding EWG health guidelines out of 29 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Tuscumbia water report →Prichard, Alabama
Prichard has 14 contaminants exceeding EWG health guidelines out of 28 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Prichard water report →Guntersville, Alabama
Guntersville has 14 contaminants exceeding EWG health guidelines out of 28 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Guntersville water report →Lanett, Alabama
Lanett has 14 contaminants exceeding EWG health guidelines out of 28 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Lanett water report →Birmingham, Alabama
Birmingham has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Birmingham water report →Auburn, Alabama
Auburn has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Auburn water report →Smiths Station, Alabama
Smiths Station has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Smiths Station water report →Helena, Alabama
Helena has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Helena water report →Mulga, Alabama
Mulga has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Mulga water report →Quinton, Alabama
Quinton has 14 contaminants exceeding EWG health guidelines out of 27 detected — significantly above the national average. Multiple known carcinogens were found at levels of concern.
See full Quinton water report →What We Found: Key Patterns
The most frequently detected contaminants exceeding health guidelines across these cities are Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Chromium (hexavalent). These appear repeatedly across different water systems and regions.
Water quality varies significantly even within the same state, driven by local geology, agricultural activity, and industrial proximity.
Across all ranked cities, 373 contaminant readings exceed EWG health guidelines, but only 18 exceed EPA legal limits. This gap of 355 highlights how legal standards may not fully protect public health — EPA limits haven't been updated for many contaminants in decades.
Full Rankings Table
| Rank | City | State | Detected | Above Guidelines | Above Legal | People Served |
|---|---|---|---|---|---|---|
| 1 | Gadsden | AL | 27 | 18 | 2 | 44,637 |
| 2 | Lincoln | AL | 22 | 18 | 4 | 10,218 |
| 3 | Pelham | AL | 44 | 17 | 0 | 38,703 |
| 4 | Talladega | AL | 38 | 16 | 0 | 20,250 |
| 5 | Leeds | AL | 37 | 16 | 0 | 21,300 |
| 6 | Columbiana | AL | 30 | 16 | 2 | 35,982 |
| 7 | Loachapoka | AL | 31 | 15 | 1 | 12,657 |
| 8 | Pell City | AL | 30 | 15 | 0 | 15,402 |
| 9 | Phenix City | AL | 27 | 15 | 1 | 42,267 |
| 10 | Montevallo | AL | 26 | 15 | 1 | 9,741 |
| 11 | Clanton | AL | 25 | 15 | 2 | 13,500 |
| 12 | Tuskegee | AL | 24 | 15 | 0 | 12,900 |
| 13 | Sylacauga | AL | 31 | 14 | 0 | 24,087 |
| 14 | Springville | AL | 31 | 14 | 2 | 6,015 |
| 15 | 334-365-3042 | AL | 30 | 14 | 0 | 45,444 |
| 16 | Tuscumbia | AL | 29 | 14 | 1 | 14,400 |
| 17 | Prichard | AL | 28 | 14 | 0 | 29,253 |
| 18 | Guntersville | AL | 28 | 14 | 0 | 12,612 |
| 19 | Lanett | AL | 28 | 14 | 0 | 7,152 |
| 20 | Birmingham | AL | 27 | 14 | 0 | 585,000 |
| 21 | Auburn | AL | 27 | 14 | 1 | 65,313 |
| 22 | Smiths Station | AL | 27 | 14 | 1 | 31,695 |
| 23 | Helena | AL | 27 | 14 | 0 | 20,700 |
| 24 | Mulga | AL | 27 | 14 | 0 | 6,201 |
| 25 | Quinton | AL | 27 | 14 | 0 | 3,222 |
Frequently Asked Questions
What city has the worst tap water in Alabama?
Based on 2026 data, Gadsden, AL has the most contaminants exceeding EWG health guidelines among the cities we analyzed.
How are cities ranked in this report?
Cities are ranked by the number of contaminants exceeding EWG health guidelines. These guidelines are typically stricter than EPA legal limits and reflect current scientific research on safe exposure levels.
Is my tap water safe if my city isn't on this list?
Not necessarily. Even cities not on this list may have contaminants of concern. We recommend checking your specific water quality using our free water scan tool.
What's the best water filter for contaminated water?
A reverse osmosis (RO) system is the most effective for removing the widest range of contaminants. For whole-home protection, a combination of RO for drinking water and a whole-home filter for showers and baths is recommended.
Related Reports
Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)
Last updated: April 2026
Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.
