PlainWater

Blanco County, Texas

SDWIS compliance plate

Sheet TX031 · Blanco County 26 sys · 2,150 viol · #2270/3254

VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 73.1% flagged
  • HEALTH-LOW 10.9% health
  • RANK-LOWER #2270/3254
  • PHOTO-FINISH ±0.9 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 77%
  • SYS-SMALL 26 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Gillespie County (+ 0.9 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Blanco County ranks #2,270 of 3,254 counties by people served, and #159 of 254 counties in Texas. See methodology · corpus placement.

Blanco County standing, lower-flagged corpus third

Flagged-system rate 73.1% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 10.9% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Blanco County . Population served ranks #2,270 of 3,254 · #159 of 254 in Texas.

Flagged-rate neighbourhood around Blanco County

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

0% 20% 40% 60% 80% 100% Howard · lowest Gillespie · near Donley · near Bee · highest 66.7% 73.1% 74% 74.7% 75% 76.8% 100%

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

Water Systems

Compare beyond Texas

Lower-flagged peers for Blanco County

Cross-state counties nearest Blanco County on flagged-system share (73.1%) and cumulative violation count (2,150). 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.