PlainWater

Frio County, Texas

SDWIS compliance plate

Sheet TX163 · Frio County 7 sys · 3,458 viol · #1966/3254

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

  • VIOL-SEVERE 85.7% flagged
  • HEALTH-LOW 1.4% health
  • RANK-LOWER #1966/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-TINY 7 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Frio County ranks #1,966 of 3,254 counties by people served, and #140 of 254 counties in Texas. See methodology · corpus placement.

Frio County standing, lower-flagged corpus third

Flagged-system rate 85.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 1.4% 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 #1,966 of 3,254 · #140 of 254 in Texas.

Flagged-rate neighbourhood around Frio County

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

0% 20% 40% 60% 80% 100% Howard · lowest Frio · this county Midland · near Bee · highest 66.7% 84.8% 85.7% 85.7% 85.9% 86.3% 100%

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

Water Systems

System Name Population Violations PFAS
City of Pearsall 8,985 51 Clean
City of Dilley 4,505 51 Clean
Moore WSC 930 62 -
Road Ranger 270 830 439 -
Sendero Ranch Water System 200 0 -
Pearsall Development 200 87 -
Derby Ing 174 2,768 -

Compare beyond Texas

Lower-flagged peers for Frio County

Cross-state counties nearest Frio County on flagged-system share (85.7%) and cumulative violation count (3,458). 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. 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.