PlainWater

Codington County, South Dakota

SDWIS compliance plate

Sheet SD029 · Codington County 6 sys · 485 viol · #1580/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 19.2% health
  • RANK-MID #1580/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-TINY 6 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Codington County ranks #1,580 of 3,254 counties by people served, and #8 of 65 counties in South Dakota. See methodology · corpus placement.

Codington County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.2% 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 #1,580 of 3,254 · #8 of 65 in South Dakota.

Flagged-rate neighbourhood around Codington County

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

0% 20% 40% 60% 80% 100% Shannon · lowest Buffalo · highest Lincoln · near Davison · near 50% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Watertown Municipal Utilities 23,230 10 Clean
Clark Rural Water-Kampeska 602 129 -
Florence 337 54 -
Henry 256 67 -
South Shore 189 117 -
Wallace 91 108 -

Compare beyond South Dakota

Mid-flagged peers for Codington County

Cross-state counties nearest Codington County on flagged-system share (100.0%) and cumulative violation count (485). 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.