PlainWater

Fremont County, Iowa

SDWIS compliance plate

Sheet IA071 · Fremont County 13 sys · 996 viol · #2731/3254

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

  • VIOL-SEVERE 92.3% flagged
  • HEALTH-LOW 13.3% health
  • RANK-BOTTOM #2731/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 92%
  • SYS-SMALL 13 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Fremont County ranks #2,731 of 3,254 counties by people served, and #88 of 99 counties in Iowa. See methodology · corpus placement.

Fremont County standing, lower-flagged corpus third

Flagged-system rate 92.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.3% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Fremont County . Population served ranks #2,731 of 3,254 · #88 of 99 in Iowa.

Flagged-rate neighbourhood around Fremont County

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

0% 20% 40% 60% 80% 100% Mahaska · lowest Fremont · this county Humboldt · near Ringgold · highest 75% 92.2% 92.3% 92.3% 92.3% 92.9% 100%

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

Water Systems

Compare beyond Iowa

Lower-flagged peers for Fremont County

Cross-state counties nearest Fremont County on flagged-system share (92.3%) and cumulative violation count (996). 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.