PlainWater

Brookings County, South Dakota

SDWIS compliance plate

Sheet SD011 · Brookings County 12 sys · 2,574 viol · #1079/3254

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

  • VIOL-SEVERE 91.7% flagged
  • HEALTH-LOW 3.1% health
  • RANK-UPPER #1079/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-SMALL 12 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Brookings County ranks #1,079 of 3,254 counties by people served, and #3 of 65 counties in South Dakota. See methodology · corpus placement.

Brookings County standing, lower-flagged corpus third

Flagged-system rate 91.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.1% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,079 of 3,254 · #3 of 65 in South Dakota.

Flagged-rate neighbourhood around Brookings County

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

0% 20% 40% 60% 80% 100% Shannon · lowest Butte · near Fall River · near Buffalo · highest 50% 91.7% 91.7% 91.7% 92.9% 93.3% 100%

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

Water Systems

System Name Population Violations PFAS
Brookings Municipal Utilities 23,377 12 Clean
Kingbrook I Rural Water System 6,455 9 Clean
Brookings-Deuel Rural Water System 6,200 9 Clean
Volga 2,340 16 -
Aurora 1,200 33 -
Elkton 755 53 -
White 499 15 -
University Estates 150 71 -
Newdale Colony 119 99 -
Red Willow Colony 93 74 -
North Brookings Water and Sanitary D 48 0 -
Southbrook Estates 28 2,183 -

Compare beyond South Dakota

Lower-flagged peers for Brookings County

Cross-state counties nearest Brookings County on flagged-system share (91.7%) and cumulative violation count (2,574). 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.