PlainWater

Warren County, Indiana

SDWIS compliance plate

Sheet IN171 · Warren County 24 sys · 1,734 viol · #2772/3254

VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 91.7% flagged
  • HEALTH-LOW 15.3% health
  • RANK-BOTTOM #2772/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-SMALL 24 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Montgomery County (+ 0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Warren County ranks #2,772 of 3,254 counties by people served, and #91 of 92 counties in Indiana. See methodology · corpus placement.

Warren County standing, lower-flagged corpus third

Flagged-system rate 91.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 15.3% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Warren County . Population served ranks #2,772 of 3,254 · #91 of 92 in Indiana.

Flagged-rate neighbourhood around Warren County

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

0% 20% 40% 60% 80% 100% Hendricks · lowest Montgomery · near Shelby · near Union · highest 84.9% 91.7% 91.8% 91.9% 92.1% 92.3% 100%

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

Water Systems

Compare beyond Indiana

Lower-flagged peers for Warren County

Cross-state counties nearest Warren County on flagged-system share (91.7%) and cumulative violation count (1,734). 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.