PlainWater

Caldwell County, Texas

SDWIS compliance plate

Sheet TX055 · Caldwell County 8 sys · 487 viol · #1173/3254

VIOL-SEVERE · HEALTH-MID · RANK-UPPER · PHOTO-FINISH · PFAS-MID · SRC-SW · SYS-TINY · BOOK-FULL

  • VIOL-SEVERE 87.5% flagged
  • HEALTH-MID 41.7% health
  • RANK-UPPER #1173/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-MID 33.3% detect
  • SRC-SW SW lead 88%
  • SYS-TINY 8 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Bandera County ( -0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Caldwell County ranks #1,173 of 3,254 counties by people served, and #84 of 254 counties in Texas. See methodology · corpus placement.

Caldwell County standing, lower-flagged corpus third

Flagged-system rate 87.5% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 41.7% 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 #1,173 of 3,254 · #84 of 254 in Texas.

Flagged-rate neighbourhood around Caldwell County

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

0% 20% 40% 60% 80% 100% Howard · lowest Bandera · near Kendall · near Bee · highest 66.7% 86.7% 87.3% 87.5% 87.8% 88.3% 100%

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

Water Systems

System Name Population Violations PFAS
City of Lockhart 18,800 2 Clean
City of Luling 7,364 27 Clean
Maxwell Sud 5,823 170 Detected
Martindale WSC 3,045 141 -
Tri Community WSC 1,698 135 -
Gbra Luling Plant 0 6 -
Crwa Hays Caldwell WTP 0 6 -
Alliance Regional Water Authority 1B 0 0 -

Compare beyond Texas

Lower-flagged peers for Caldwell County

Cross-state counties nearest Caldwell County on flagged-system share (87.5%) and cumulative violation count (487). 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.