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County profile · EPA SDWIS + UCMR5

Dickinson County, Iowa

14 SDWIS-listed public water systems serve 14,274 people in Dickinson County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

14
SDWIS water systems Middle third of counties
722
Total violations Lower third of counties
92.9%
SDWIS systems w/ a violation Middle third of counties
100.0%
UCMR5 PFAS rate (2 tested) Upper third of counties with tests

SDWIS compliance plate

Sheet IA059 · Dickinson County 14 sys · 722 viol · #2063/3254

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

  • VIOL-SEVERE 92.9% flagged
  • HEALTH-LOW 8.9% health
  • RANK-LOWER #2063/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 100.0% detect
  • SRC-SW SW lead 57%
  • SYS-SMALL 14 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Dickinson County ranks #2,063 of 3,254 counties by people served, and #42 of 99 counties in Iowa. See methodology · corpus placement.

Dickinson County standing, mid-flagged corpus third

Flagged-system rate 92.9% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 8.9% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #2,063 of 3,254 · #42 of 99 in Iowa.

Flagged-rate neighbourhood around Dickinson County

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

0% 20% 40% 60% 80% 100% Mahaska · lowest Dickinson · this county Calhoun · near Ringgold · highest 75% 92.3% 92.9% 92.9% 92.9% 93.3% 100%

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

Water Systems

Compare beyond Iowa

Mid-flagged peers for Dickinson County

Cross-state counties nearest Dickinson County on flagged-system share (92.9%) and cumulative violation count (722). 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.