Marion County, Illinois
SDWIS compliance plate
Sheet IL121 · Marion County 18 sys · 810 viol · #1058/3254
VIOL-SEVERE · HEALTH-MID · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-SW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 88.9% flagged
- HEALTH-MID 28.5% health
- RANK-UPPER #1058/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-CLEAN 0.0% detect
- SRC-SW SW lead 94%
- SYS-SMALL 18 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Knox County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Marion County ranks #1,058 of 3,254 counties by people served, and #32 of 102 counties in Illinois. See methodology · corpus placement.
Marion County standing, lower-flagged corpus third
Flagged-system rate 88.9% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 28.5% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,058 of 3,254 · #32 of 102 in Illinois.
Flagged-rate neighbourhood around Marion County
Lowest/highest poles plus in-state counties nearest Marion County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Centralia | 12,182 | 23 | Clean |
| Salem | 7,905 | 30 | Clean |
| Raccoon Water Company | 7,080 | 41 | Clean |
| North East Marion County Water Cmpny | 3,220 | 26 | Clean |
| Fmc Water Company | 2,945 | 22 | - |
| Odin | 2,543 | 21 | - |
| Sandoval | 1,528 | 37 | - |
| Walnut Hill | 1,180 | 8 | - |
| Wamac | 1,030 | 24 | - |
| Kinmundy | 940 | 137 | Clean |
| Patoka | 603 | 217 | - |
| Junction City | 494 | 24 | - |
| Iuka | 486 | 18 | - |
| Alma | 336 | 146 | - |
| W G Murray Development Center | 290 | 33 | - |
| Wal Mart Supercenter Salem | 25 | 0 | - |
| Icehouse Salem | 25 | 3 | - |
| Twice the Ice Herrin | 25 | 0 | - |
Compare beyond Illinois
Lower-flagged peers for Marion County
Cross-state counties nearest Marion County on flagged-system share (88.9%) and cumulative violation count (810). 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.