O'Brien County, Iowa
SDWIS compliance plate
Sheet IA141 · O'Brien County 7 sys · 299 viol · #2262/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-TINY · BOOK-FULL
- VIOL-SEVERE 85.7% flagged
- HEALTH-LOW 4.3% health
- RANK-LOWER #2262/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 100%
- SYS-TINY 7 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Story County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, O'Brien County ranks #2,262 of 3,254 counties by people served, and #57 of 99 counties in Iowa. See methodology · corpus placement.
O'Brien County standing, lower-flagged corpus third
Flagged-system rate 85.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 4.3% 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 #2,262 of 3,254 · #57 of 99 in Iowa.
Flagged-rate neighbourhood around O'Brien County
Lowest/highest poles plus in-state counties nearest O'Brien County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Sheldon Water Department | 5,512 | 22 | Clean |
| Hartley Municipal Water Department | 1,605 | 0 | - |
| Sanborn Water Supply | 1,392 | 137 | - |
| Paullina Municipal Water Supply | 996 | 35 | - |
| Primghar Municipal Water Supply | 896 | 25 | - |
| Sutherland Water Supply | 629 | 61 | - |
| Calumet Water Supply | 146 | 19 | - |
Compare beyond Iowa
Lower-flagged peers for O'Brien County
Cross-state counties nearest O'Brien County on flagged-system share (85.7%) and cumulative violation count (299). 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.
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.