Clay County, Missouri
SDWIS compliance plate
Sheet MO047 · Clay County 21 sys · 851 viol · #499/3254
VIOL-SEVERE · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-MID 34.2% health
- RANK-TOP #499/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-HIGH 50.0% detect
- SRC-GW GW lead 52%
- SYS-SMALL 21 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Cass County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Clay County ranks #499 of 3,254 counties by people served, and #10 of 115 counties in Missouri. See methodology · corpus placement.
Clay County standing, mid-flagged corpus third
Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 34.2% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #499 of 3,254 · #10 of 115 in Missouri.
Flagged-rate neighbourhood around Clay County
Lowest/highest poles plus in-state counties nearest Clay County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Liberty PWS | 30,800 | 115 | Clean |
| Gladstone PWS | 27,000 | 1 | Clean |
| Kearney PWS | 11,500 | 11 | Detected |
| Excelsior Springs PWS | 11,084 | 27 | Clean |
| Smithville PWS | 10,885 | 154 | Detected |
| Ray County Cons PWSD 2 | 9,360 | 5 | Clean |
| Clay County PWSD 6 | 4,912 | 11 | Detected |
| North Kansas City PWS | 4,500 | 7 | Detected |
| Clay County PWSD 2 | 3,485 | 19 | - |
| Clay County PWSD 3 | 3,447 | 40 | Clean |
| Clay County PWSD 9 | 2,465 | 8 | - |
| Clay County PWSD 8 | 2,243 | 14 | Detected |
| Clay County PWSD 5 | 1,191 | 9 | - |
| Clay County PWSD 4 | 1,032 | 15 | - |
| Liberty Village MHP | 350 | 21 | - |
| Missouri City PWS | 254 | 124 | - |
| Clay County PWSD 7 | 245 | 39 | - |
| Birmingham Village of PWS | 200 | 33 | - |
| Prathersville PWS | 120 | 7 | - |
| Mosby PWS | 115 | 185 | - |
| Twin Lakes MHP | 60 | 6 | - |
Compare beyond Missouri
Mid-flagged peers for Clay County
Cross-state counties nearest Clay County on flagged-system share (100.0%) and cumulative violation count (851). 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.