PlainWater

Washington County, Mississippi

SDWIS compliance plate

Sheet MS151 · Washington County 14 sys · 6,121 viol · #988/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 4.3% health
  • RANK-UPPER #988/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-SMALL 14 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Washington County ranks #988 of 3,254 counties by people served, and #18 of 82 counties in Mississippi. See methodology · corpus placement.

Washington 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 4.3% 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 #988 of 3,254 · #18 of 82 in Mississippi.

Flagged-rate neighbourhood around Washington County

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

0% 20% 40% 60% 80% 100% Hinds · lowest Issaquena · highest Rankin · near Forrest · near 75.9% 100% 100% 100% 100% 100% 100%

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

Water Systems

Compare beyond Mississippi

Mid-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (100.0%) and cumulative violation count (6,121). 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.