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County profile · EPA SDWIS + UCMR5

Dimmit County, Texas

13 SDWIS-listed public water systems serve 12,187 people in Dimmit County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

13
SDWIS water systems Middle third of counties
2,202
Total violations Middle third of counties
92.3%
SDWIS systems w/ a violation Lower third of counties
0.0%
UCMR5 PFAS rate (1 tested) Lower third of counties with tests

SDWIS compliance plate

Sheet TX127 · Dimmit County 13 sys · 2,202 viol · #2205/3254

VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 92.3% flagged
  • HEALTH-LOW 2.0% health
  • RANK-LOWER #2205/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 92%
  • SYS-SMALL 13 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: El Paso County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Dimmit County ranks #2,205 of 3,254 counties by people served, and #155 of 254 counties in Texas. See methodology · corpus placement.

Dimmit County standing, lower-flagged corpus third

Flagged-system rate 92.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 2.0% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #2,205 of 3,254 · #155 of 254 in Texas.

Flagged-rate neighbourhood around Dimmit County

Lowest/highest poles plus in-state counties nearest Dimmit County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Howard · lowest El Paso · near Jim Wells · near Bee · highest 66.7% 92.3% 92.3% 92.3% 92.3% 92.4% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

Compare beyond Texas

Lower-flagged peers for Dimmit County

Cross-state counties nearest Dimmit County on flagged-system share (92.3%) and cumulative violation count (2,202). 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.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

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.