Shannon County, South Dakota
SDWIS compliance plate
Sheet SD113 · Shannon County 2 sys · 827 viol · #3133/3254
VIOL-HIGH · HEALTH-LOW · RANK-BOTTOM · BELOW-PEER · PFAS-NONE · SRC-SW · SYS-TINY · BOOK-MOST
- VIOL-HIGH 50.0% flagged
- HEALTH-LOW 7.7% health
- RANK-BOTTOM #3133/3254
- BELOW-PEER 14.7 pp cleaner
- PFAS-NONE No UCMR5 set
- SRC-SW SW lead 50%
- SYS-TINY 2 systems
- BOOK-MOST 6/7 fields
Nearest flagged-rate peer: Custer County (+ 14.7 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Shannon County ranks #3,133 of 3,254 counties by people served, and #48 of 65 counties in South Dakota. See methodology · corpus placement.
Shannon County standing, lower-flagged corpus third
Flagged-system rate 50.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 7.7% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Shannon County . Population served ranks #3,133 of 3,254 · #48 of 65 in South Dakota.
Flagged-rate neighbourhood around Shannon County
Lowest/highest poles plus in-state counties nearest Shannon County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Lakota Tech High School | 1,250 | 0 | - |
| Batesland | 148 | 827 | - |
Compare beyond South Dakota
Lower-flagged peers for Shannon County
Cross-state counties nearest Shannon County on flagged-system share (50.0%) and cumulative violation count (827). In-state neighbours stay on the compliance plate above.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
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.