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County profile · EPA SDWIS + UCMR5

Huron County, Ohio

26 SDWIS-listed public water systems serve 66,221 people in Huron County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

26
SDWIS water systems Middle third of counties
1,305
Total violations Middle third of counties
88.5%
SDWIS systems w/ a violation Lower third of counties
60.0%
UCMR5 PFAS rate (5 tested) Upper third of counties with tests

SDWIS compliance plate

Sheet OH077 · Huron County 26 sys · 1,305 viol · #779/3254

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

  • VIOL-SEVERE 88.5% flagged
  • HEALTH-LOW 19.7% health
  • RANK-UPPER #779/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-HIGH 60.0% detect
  • SRC-GW GW lead 58%
  • SYS-SMALL 26 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Champaign County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Huron County ranks #779 of 3,254 counties by people served, and #37 of 88 counties in Ohio. See methodology · corpus placement.

Huron County standing, lower-flagged corpus third

Flagged-system rate 88.5% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.7% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 60.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #779 of 3,254 · #37 of 88 in Ohio.

Flagged-rate neighbourhood around Huron County

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

0% 20% 40% 60% 80% 100% Fayette · lowest Huron · this county Sandusky · near Vinton · highest 78.6% 88.4% 88.5% 88.9% 88.9% 89.1% 100%

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

Water Systems

Compare beyond Ohio

Lower-flagged peers for Huron County

Cross-state counties nearest Huron County on flagged-system share (88.5%) and cumulative violation count (1,305). 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.