PlainWater

Lincoln County, South Dakota

SDWIS compliance plate

Sheet SD083 · Lincoln County 8 sys · 350 viol · #1198/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 9.7% health
  • RANK-UPPER #1198/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 100%
  • SYS-TINY 8 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, Lincoln County ranks #1,198 of 3,254 counties by people served, and #5 of 65 counties in South Dakota. See methodology · corpus placement.

Lincoln 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 9.7% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,198 of 3,254 · #5 of 65 in South Dakota.

Flagged-rate neighbourhood around Lincoln County

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

0% 20% 40% 60% 80% 100% Shannon · lowest Buffalo · highest Hughes · 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
Harrisburg 10,297 14 Detected
Tea 7,381 24 Clean
Lincoln County Rural Water System 5,965 6 Detected
South Lincoln Rural Water System 5,250 66 Clean
Canton 3,066 66 -
Lennox 2,571 20 -
Worthing 939 124 -
Hudson 332 30 -

Compare beyond South Dakota

Mid-flagged peers for Lincoln County

Cross-state counties nearest Lincoln County on flagged-system share (100.0%) and cumulative violation count (350). 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.