County profile · EPA SDWIS + UCMR5
Alexander County, Illinois
6 SDWIS-listed public water systems serve 7,545 people in Alexander County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 6
- SDWIS water systems Smaller third of counties
- 269
- Total violations Lower third of counties
- 83.3%
- SDWIS systems w/ a violation Lower third of counties
- -
- UCMR5 PFAS (none tested) No UCMR5 tests
SDWIS compliance plate
Sheet IL003 · Alexander County 6 sys · 269 viol · #2563/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-TINY · BOOK-MOST
- VIOL-SEVERE 83.3% flagged
- HEALTH-LOW 3.3% health
- RANK-LOWER #2563/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 100%
- SYS-TINY 6 systems
- BOOK-MOST 6/7 fields
Nearest flagged-rate peer: Jackson County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Alexander County ranks #2,563 of 3,254 counties by people served, and #91 of 102 counties in Illinois. See methodology · corpus placement.
Alexander County standing, lower-flagged corpus third
Flagged-system rate 83.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.3% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Alexander County . Population served ranks #2,563 of 3,254 · #91 of 102 in Illinois.
Flagged-rate neighbourhood around Alexander County
Lowest/highest poles plus in-state counties nearest Alexander County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Southwater Inc | 2,185 | 0 | - |
| IL American-Cairo | 1,821 | 10 | - |
| Central Alexander Cnty Pwd | 1,763 | 28 | - |
| McClure-East Cape Pwd | 910 | 84 | - |
| Tamms | 653 | 89 | - |
| Thebes | 213 | 58 | - |
Compare beyond Illinois
Lower-flagged peers for Alexander County
Cross-state counties nearest Alexander County on flagged-system share (83.3%) and cumulative violation count (269). 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. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.