Calhoun County, Iowa
SDWIS compliance plate
Sheet IA025 · Calhoun County 14 sys · 949 viol · #2520/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST
- VIOL-SEVERE 92.9% flagged
- HEALTH-LOW 14.1% health
- RANK-LOWER #2520/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 100%
- SYS-SMALL 14 systems
- BOOK-MOST 6/7 fields
Nearest flagged-rate peer: Dickinson County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Calhoun County ranks #2,520 of 3,254 counties by people served, and #72 of 99 counties in Iowa. See methodology · corpus placement.
Calhoun County standing, mid-flagged corpus third
Flagged-system rate 92.9% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 14.1% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Calhoun County . Population served ranks #2,520 of 3,254 · #72 of 99 in Iowa.
Flagged-rate neighbourhood around Calhoun County
Lowest/highest poles plus in-state counties nearest Calhoun County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Rockwell City Water Supply | 2,250 | 27 | - |
| Lake City Water Supply | 1,731 | 157 | - |
| Manson Water Supply | 1,709 | 213 | - |
| Pomeroy Water Supply | 671 | 41 | - |
| Lohrville Water Supply | 381 | 37 | - |
| Farnhamville Water Supply | 379 | 6 | - |
| Twin Lakes Utilities | 300 | 78 | - |
| Lytton Water Department | 282 | 38 | - |
| Somers Water Works | 128 | 60 | - |
| Knierim Water Supply | 53 | 86 | - |
| Twin Lakes Golf Club | 39 | 0 | - |
| Rinard Water Supply | 38 | 54 | - |
| Jolley Water Supply | 28 | 122 | - |
| Yetter Municipal Water Supply | 25 | 30 | - |
Compare beyond Iowa
Mid-flagged peers for Calhoun County
Cross-state counties nearest Calhoun County on flagged-system share (92.9%) and cumulative violation count (949). 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.