Dimmit County, Texas
4 ZIP codes · Avg score 88/100 · Grade A · Updated 2026-06-03
Although county size varies, Dimmit County's 4 ZIP codes share reliably safe tap water records and above-average compliance scores.
How Dimmit County Compares
How Dimmit County Compares
Dimmit County scores 6 points above the Texas state average (82/100) and 20 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 16.7 (asthma 9.5%, diabetes 23.4%)
Estimated additional annual cost per homeowner: $563, driven primarily by energy_code_gap
Infrastructure: 0.345% avg pipe failure probability
56.3% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $563
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,942 housing units in Dimmit County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Dimmit County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Dimmit County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Dimmit County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Carrizo Springs | 5,830 | 24 |
| 2 | Carrizo Hill Water Supply Corporation | 1,050 | 24 |
| 3 | Catarina Water Supply Corporation | 222 | 24 |
| 4 | Espantosa Water Supply | 210 | 24 |
| 5 | Brundage Water System | 60 | 24 |
7 total water systems serve Dimmit County.
All ZIP Codes in Dimmit County
4 ZIP codes tracked in Dimmit County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 78830 | Big Wells | 99 | A | 0 | $80K |
| 2 | 78827 | Asherton | 94 | A | 5 (1 health) | $93K |
| 3 | 78834 | Carrizo Springs | 94 | A | 24 (1 health) | $70K |
| 4 | 78836 | Catarina | 66 | C | 0 | — |
Recommended Buyer Guides for Dimmit County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 56.3% of homes built before 1978
Overview
Dimmit County in Texas covers 4 ZIP codes with an average Home Safety Score of A (88/100).
2 of 4 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Texas water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.