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County profile · EPA SDWIS + UCMR5

Preble County, Ohio

30 SDWIS-listed public water systems serve 28,413 people in Preble County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

30
SDWIS water systems Middle third of counties
2,324
Total violations Middle third of counties
96.7%
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 OH135 · Preble County 30 sys · 2,324 viol · #1419/3254

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

  • VIOL-SEVERE 96.7% flagged
  • HEALTH-LOW 19.9% health
  • RANK-MID #1419/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 97%
  • SYS-SMALL 30 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Clark County (+ 0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Preble County ranks #1,419 of 3,254 counties by people served, and #65 of 88 counties in Ohio. See methodology · corpus placement.

Preble County standing, mid-flagged corpus third

Flagged-system rate 96.7% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,419 of 3,254 · #65 of 88 in Ohio.

Flagged-rate neighbourhood around Preble County

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

0% 20% 40% 60% 80% 100% Fayette · lowest Licking · near Clark · near Vinton · highest 78.6% 96.4% 96.6% 96.7% 96.7% 97.3% 100%

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

Water Systems

Compare beyond Ohio

Mid-flagged peers for Preble County

Cross-state counties nearest Preble County on flagged-system share (96.7%) and cumulative violation count (2,324). 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.