PlainWater

Guadalupe County, Texas

SDWIS compliance plate

Sheet TX187 · Guadalupe County 18 sys · 3,891 viol · #328/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 11.8% health
  • RANK-TOP #328/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 83.3% detect
  • SRC-SW SW lead 56%
  • SYS-SMALL 18 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, Guadalupe County ranks #328 of 3,254 counties by people served, and #29 of 254 counties in Texas. See methodology · corpus placement.

Guadalupe 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 11.8% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 83.3% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #328 of 3,254 · #29 of 254 in Texas.

Flagged-rate neighbourhood around Guadalupe County

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

0% 20% 40% 60% 80% 100% Howard · lowest Bee · highest Hidalgo · near Taylor · 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
Green Valley Sud 52,497 60 Detected
City of Schertz 41,948 16 Clean
Springs Hill Sud 35,472 323 Detected
City of Seguin 32,736 57 Detected
Crystal Clear Sud 20,766 401 Detected
City of Cibolo 20,331 44 Detected
City of Marion 1,971 34 -
Oak Hills Ranch Water 624 1,050 -
Pecan Grove Mobile Home Park 552 16 -
Garden Oaks 309 49 -
John B Sanfilippo & Son 160 173 -
Country Living Estates 69 9 -
Shady Meadows Mobile Home Park 64 286 -
Lago Vista Water System 54 1,161 -
Memory Lane MHP 30 97 -
Crwa Lake Dunlap WTP 14 69 -
Schertz Seguin Local Government Corporat 0 42 -
Crwa Wells Ranch 0 4 -

Compare beyond Texas

Mid-flagged peers for Guadalupe County

Cross-state counties nearest Guadalupe County on flagged-system share (100.0%) and cumulative violation count (3,891). 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.