PlainWater

Callahan County, Texas

SDWIS compliance plate

Sheet TX059 · Callahan County 5 sys · 1,049 viol · #2084/3254

VIOL-SEVERE · HEALTH-HIGH · RANK-LOWER · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-TINY · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-HIGH 59.2% health
  • RANK-LOWER #2084/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 100.0% detect
  • SRC-SW SW lead 80%
  • SYS-TINY 5 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Callahan County ranks #2,084 of 3,254 counties by people served, and #148 of 254 counties in Texas. See methodology · corpus placement.

Callahan 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 59.2% 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 #2,084 of 3,254 · #148 of 254 in Texas.

Flagged-rate neighbourhood around Callahan County

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

0% 20% 40% 60% 80% 100% Howard · lowest Bee · highest Hidalgo · near Guadalupe · near 66.7% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Eula WSC 3,918 151 Detected
City of Clyde 3,820 228 Detected
Callahan County WSC 3,747 379 -
City of Baird 1,500 226 -
City of Cross Plains 926 65 -

Compare beyond Texas

Mid-flagged peers for Callahan County

Cross-state counties nearest Callahan County on flagged-system share (100.0%) and cumulative violation count (1,049). 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.