PlainWater

County profile · EPA SDWIS + UCMR5

Montgomery County, Alabama

8 SDWIS-listed public water systems serve 291,756 people in Montgomery County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

8
SDWIS water systems Smaller third of counties
426
Total violations Lower third of counties
100.0%
SDWIS systems w/ a violation Middle third of counties
0.0%
UCMR5 PFAS rate (2 tested) Lower third of counties with tests

SDWIS compliance plate

Sheet AL101 · Montgomery County 8 sys · 426 viol · #243/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 9.2% health
  • RANK-TOP #243/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 63%
  • SYS-TINY 8 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, Montgomery County ranks #243 of 3,254 counties by people served, and #5 of 67 counties in Alabama. See methodology · corpus placement.

Montgomery 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 9.2% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #243 of 3,254 · #5 of 67 in Alabama.

Flagged-rate neighbourhood around Montgomery County

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

0% 20% 40% 60% 80% 100% Bibb · lowest Greene · highest Madison · near Baldwin · near 80% 100% 100% 100% 100% 100% 100%

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

Water Systems

Compare beyond Alabama

Mid-flagged peers for Montgomery County

Cross-state counties nearest Montgomery County on flagged-system share (100.0%) and cumulative violation count (426). 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. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.