Henderson County, Illinois
SDWIS compliance plate
Sheet IL071 · Henderson County 28 sys · 2,179 viol · #2328/3254
VIOL-SEVERE · HEALTH-HIGH · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 82.1% flagged
- HEALTH-HIGH 60.9% health
- RANK-LOWER #2328/3254
- PHOTO-FINISH ±0.1 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 100%
- SYS-SMALL 28 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Lee County ( -0.1 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Henderson County ranks #2,328 of 3,254 counties by people served, and #84 of 102 counties in Illinois. See methodology · corpus placement.
Henderson County standing, lower-flagged corpus third
Flagged-system rate 82.1% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 60.9% 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 #2,328 of 3,254 · #84 of 102 in Illinois.
Flagged-rate neighbourhood around Henderson County
Lowest/highest poles plus in-state counties nearest Henderson County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Dallas Rural Water District | 6,370 | 23 | Clean |
| Oquawka | 1,125 | 17 | - |
| Stronghurst | 950 | 146 | - |
| Gladstone | 387 | 83 | - |
| Biggsville | 273 | 1,023 | - |
| Ayerco Convenience Center #17 | 200 | 9 | - |
| Raritan | 180 | 192 | - |
| Media | 139 | 219 | - |
| Tharps Subway Oquawka | 125 | 11 | - |
| Cruisers Pit Stop | 50 | 58 | - |
| Charlies Angels | 50 | 44 | - |
| Western Illinois Boat Club | 38 | 41 | - |
| Carthage Lake Club | 35 | 23 | - |
| Nutrien Ag Solutions | 35 | 13 | - |
| Da Moore Trucking LLC | 35 | 0 | - |
| Sandy Oaks Cmpgrnd/Dale Garner | 25 | 55 | - |
| Big River Equestrian Area Well | 25 | 14 | - |
| Big River Shady Pines Camp | 25 | 32 | - |
| New Crystal Lake | 25 | 29 | - |
| Ideal Hunting and Fishing Club | 25 | 46 | - |
| Big River State Forest Office | 25 | 50 | - |
| Fisher Food Center | 25 | 3 | - |
| Fishers Food Center (133280) | 25 | 0 | - |
| Tharps Splash and Dash Car Wash | 25 | 33 | - |
| The Belted Cow Orchard | 25 | 15 | - |
| Lucky Duck Lounge, LLC | 25 | 0 | - |
| Tiny Acers | 25 | 0 | - |
| Sin City Billards | 25 | 0 | - |
Compare beyond Illinois
Lower-flagged peers for Henderson County
Cross-state counties nearest Henderson County on flagged-system share (82.1%) and cumulative violation count (2,179). 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.