County profile · EPA SDWIS + UCMR5
Olmsted County, Minnesota
83 SDWIS-listed public water systems serve 148,383 people in Olmsted County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 83
- SDWIS water systems Larger third of counties
- 573
- Total violations Lower third of counties
- 50.6%
- SDWIS systems w/ a violation Lower third of counties
- 33.3%
- UCMR5 PFAS rate (3 tested) Middle third of counties with tests
SDWIS compliance plate
Sheet MN109 · Olmsted County 83 sys · 573 viol · #426/3254
VIOL-HIGH · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-HIGH 50.6% flagged
- HEALTH-MID 43.5% health
- RANK-TOP #426/3254
- PHOTO-FINISH ±0.1 pp
- PFAS-MID 33.3% detect
- SRC-GW GW lead 100%
- SYS-MID 83 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: St. Louis County ( -0.1 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Olmsted County ranks #426 of 3,254 counties by people served, and #8 of 87 counties in Minnesota. See methodology · corpus placement.
Olmsted County standing, lower-flagged corpus third
Flagged-system rate 50.6% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 43.5% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 33.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #426 of 3,254 · #8 of 87 in Minnesota.
Flagged-rate neighbourhood around Olmsted County
Lowest/highest poles plus in-state counties nearest Olmsted County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Minnesota
Lower-flagged peers for Olmsted County
Cross-state counties nearest Olmsted County on flagged-system share (50.6%) and cumulative violation count (573). 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.