County profile · EPA SDWIS + UCMR5
Ralls County, Missouri
4 SDWIS-listed public water systems serve 15,813 people in Ralls County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 4
- SDWIS water systems Smaller third of counties
- 65
- Total violations Lower third of counties
- 75.0%
- SDWIS systems w/ a violation Lower third of counties
- 100.0%
- UCMR5 PFAS rate (2 tested) Upper third of counties with tests
SDWIS compliance plate
Sheet MO173 · Ralls County 4 sys · 65 viol · #1968/3254
VIOL-SEVERE · HEALTH-HIGH · RANK-LOWER · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-TINY · BOOK-FULL
- VIOL-SEVERE 75.0% flagged
- HEALTH-HIGH 56.9% health
- RANK-LOWER #1968/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-HIGH 100.0% detect
- SRC-SW SW lead 75%
- SYS-TINY 4 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Putnam County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Ralls County ranks #1,968 of 3,254 counties by people served, and #53 of 115 counties in Missouri. See methodology · corpus placement.
Ralls County standing, lower-flagged corpus third
Flagged-system rate 75.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 56.9% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,968 of 3,254 · #53 of 115 in Missouri.
Flagged-rate neighbourhood around Ralls County
Lowest/highest poles plus in-state counties nearest Ralls County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Ralls County PWSD 1 | 7,662 | 46 | Detected |
| Cannon PWSD 1 | 6,482 | 13 | Detected |
| New London PWS | 975 | 6 | - |
| Perry PWS | 694 | 0 | - |
Compare beyond Missouri
Lower-flagged peers for Ralls County
Cross-state counties nearest Ralls County on flagged-system share (75.0%) and cumulative violation count (65). 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.