waterbycounty
Compiled federal source snapshot

Alabama Water Quality

Drinking water data for all 67 counties.

Avg SDWIS Compliance Index

70.2

Most Common Five-Year SDWIS Compliance Band

A

Counties with Data

67

of 67 total

County water atlas

Alabama water signals by county

A state-level 2.5D view across drinking-water compliance, watershed impairment, monitoring density, and streamflow snapshot context. Pin any county, switch layers, then use the lens controls to compare index ranges, recorded violation rates, or impaired watersheds without leaving the page.

Counties

67

Avg SDWIS index

70.2

Watersheds

67

ATTAINS counties

Monitoring

67

47 fresh USGS snapshots

State atlas layers combine EPA SDWIS health-based violations, EPA ATTAINS 303(d) impairment assessments, EPA Water Quality Portal monitoring sites, and representative USGS NWIS streamflow gauges. Streamflow values appear only for fresh pipeline snapshots, not as a continuously updated stream. County pages include the observation time and year.

Prepared by ByCounty Editorial TeamPublished by WaterByCounty

Multi-source coverage in Alabama

Beyond Drinking Water

EPA SDWIS

67/ 67

counties with drinking-water compliance data

121 health violations statewide (5yr)

EPA ATTAINS

36.7%

avg impaired across 67 counties

698 of 1,838 assessed bodies impaired

EPA WQP

1,834

monitoring sites across 67 counties

890,783 total readings (5yr window)

USGS NWIS

47

counties with a fresh pipeline snapshot

0 above46 below

State atlas notes

What stands out in Alabama

County water quality is not one number. The strongest read comes from comparing drinking-water compliance against watershed impairment, monitoring density, and streamflow context. Use these signals as a starting point, then open any county profile for source-level detail.

Compliance spread

Autauga County has the highest value in the published state SDWIS Compliance Index table at 86.2/100, while Wilcox County has the lowest at 14.3/100. That is a 71.9 point gap inside one state.

Zero health violations

27

3+ health violations

13

Watershed pressure

The atlas impairment layer points to counties where assessed water bodies are most likely to miss state quality standards. Assessment density varies, so compare the percentage with the number of assessed bodies on the county page.

Morgan County84.2%St. Clair County83.3%Washington County66.7%

Monitoring hubs

Baldwin County146 sitesMobile County139 sitesTallapoosa County96 sites

Lowest flow reads

Morgan County0%Lowndes County1%Lawrence County3%

Highest fresh streamflow pipeline snapshots: Lee County (95%, observation 2026), Talladega County (55%, observation 2026), Blount County (48%, observation 2026). These are source-data observations, not household tap-water conclusions.

All Alabama Counties

CountySDWIS Compliance Index
Autauga County86.2
Bullock County86.2
Chambers County86.2
Cherokee County86.2
Chilton County86.2
Cleburne County86.2
Covington County86.2
Crenshaw County86.2
Cullman County86.2
Dallas County86.2
DeKalb County86.2
Franklin County86.2
Geneva County86.2
Greene County86.2
Hale County86.2
Henry County86.2
Lamar County86.2
Lawrence County86.2
Lowndes County86.2
Macon County86.2
Madison County86.2
Montgomery County86.2
Morgan County86.2
Perry County86.2
Pickens County86.2
Randolph County86.2
Sumter County86.2
Jefferson County72.3
Lee County71.2
Calhoun County70.3
Limestone County70.3
Marshall County70.3
Etowah County69.8
Houston County69.8
Lauderdale County69.8
Shelby County69.3
St. Clair County68.8
Talladega County68.8
Baldwin County68.2
Dale County67.8
Russell County67.8
Blount County67.4
Tallapoosa County67.4
Tuscaloosa County67.4
Mobile County65.4
Escambia County65.1
Pike County64.5
Elmore County63.8
Barbour County63.6
Clarke County63.6
Walker County61.9
Bibb County61.3
Butler County61.3
Washington County57.3
Coffee County56.2
Colbert County55.7
Winston County54.9
Conecuh County53.8
Monroe County53.6
Clay County51.6
Fayette County48.9
Jackson County42.9
Marion County41.7
Coosa County38.5
Marengo County36.2
Choctaw County23.1
Wilcox County14.3

Frequently Asked Questions

Which Alabama county has the highest SDWIS Compliance Index?
Autauga County has the highest SDWIS Compliance Index in the published Alabama cohort at 86.2/100. This WaterByCounty relative comparison is not an EPA score and does not establish current conditions for a utility or address.
What does the Five-Year SDWIS Compliance Band mean?
The band is derived only from each county aggregation's recorded health-violation rate per 100,000 people served for the stated five-year source window. It is separate from the relative SDWIS Compliance Index and is not a current determination for a specific utility or address.
What does EPA ATTAINS report across Alabama?
Across 67 published Alabama county records with EPA ATTAINS data, 698 of 1,838 assessed water bodies are listed as impaired. This is a watershed assessment and does not describe finished household tap water.
Which USGS streamflow records are shown across Alabama?
WaterByCounty has 47 fresh USGS pipeline snapshots in the published Alabama cohort. Each county page shows its observation timestamp and year. A pipeline snapshot is not a continuously updated reading or a tap-water safety measure.
Where can Alabama residents find current official information?
Review the applicable utility's Consumer Confidence Report, active notices, and the state drinking-water agency. WaterByCounty's county-level historical aggregations do not establish the current status of a specific utility, address, private well, or household plumbing system.
What does Water Quality Portal monitoring volume show in Alabama?
The published county records contain 890,783 results from 1,834 monitoring locations in the site's five-year aggregation. Monitoring volume does not by itself indicate better or worse water quality.

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. The WaterByCounty SDWIS Compliance Index reflects the recorded rate and is not an EPA score.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

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