PlainWater

Madison County, Alabama

SDWIS compliance plate

Sheet AL089 · Madison County 9 sys · 1,075 viol · #126/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-TINY · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 18.2% health
  • RANK-TOP #126/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 87.5% detect
  • SRC-SW SW lead 89%
  • SYS-TINY 9 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Jefferson County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Madison County ranks #126 of 3,254 counties by people served, and #2 of 67 counties in Alabama. See methodology · corpus placement.

Madison County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 18.2% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 87.5% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #126 of 3,254 · #2 of 67 in Alabama.

Flagged-rate neighbourhood around Madison County

Lowest/highest poles plus in-state counties nearest Madison County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Bibb · lowest Greene · highest Mobile · near Montgomery · near 80% 100% 100% 100% 100% 100% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Huntsville Utilities 262,158 1 Detected
Madison County Water Department 119,100 60 Detected
Madison, the W & Ww Board of the City Of 54,114 231 Detected
Harvest-Monrovia Water System 51,915 28 Detected
US Army Garrison-Redstone Arsenal 44,472 474 Detected
Owens Crossroads Water Authority 11,532 38 Clean
Triana Water Works 7,047 194 Detected
New Hope Water System 6,213 15 Detected
Gurley Water System 1,155 34 -

Compare beyond Alabama

Mid-flagged peers for Madison County

Cross-state counties nearest Madison County on flagged-system share (100.0%) and cumulative violation count (1,075). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.