Active hazard footprint
0 active alerts
No NWS-driven alerts active in the cached water-summary feed. Drought + precipitation context land once those snapshots are committed.
No sewer overflow rows in the 30-day window.
County workspace
Callahan County
callahan-county
Callahan County water profile
County-level water context pulled from the Atlas Texas summary service. Use this as operating context, not a regulatory determination.
0
Active alerts
0
Stream gauges
0
Sewer overflows (30d)
0
General permits
Investigation context
Weather + hydrology context for Callahan County
Composite operating context — active hazards, hydrologic features, surface-water condition, and infrastructure footprint — pulled from cached snapshots only.
Hydrology features
8 TWDB features
CARRIZO · CARRIZO · Brazos · Colorado
4 Major Aquifers · 3 Major River Basins · 3 HUC 8 Hydrologic Units
Surface water condition
0 impaired / 3 segments
0% of cached TCEQ surface segments in this county carry at least one impairment flag.
Basin: Brazos River Basin, Colorado River Basin
Drinking-water exposure
140 SDWIS violations
4 public water systems with cached health-based violations since 2023-04-01. 12,844 people served by those systems.
Top PWS: CITY OF CLYDE (42 viol.) · Top contaminant code: 2950
Stream gauge coverage
0 active gauges
No active stream gauges in the cached water-summary feed. Hydrologic stress signal lands once gauges fold in.
USGS streamflow anomaly + drought class join in next-up.
Boil-water proxy · microbial rule
16 microbial violations
2 PWSes carry SDWIS rule-group 100 (microbial) violations — the same rule that triggers Texas boil-water advisories. 14 of those are Tier 1 (24-hour public notice).
Top PWS: CITY OF CLYDE (14 viol.) · Latest: 2024-07-01
Treatment stress · E2 disinfectant
123 disinfectant violations
4 PWSes carry SDWIS rule-group 200 (Disinfectants and Disinfection Byproducts Rule) violations — the same rule family that drives E2 disinfectant residual reporting.
Top PWS: EULA WSC (33 viol.) · Top contaminant code: 2950 · Latest: 2025-10-01
Active alerts
No active alerts.
Stream gauges
No gauges loaded.
Notes
- • Surface-water segments: 3 (0 impaired)