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
Collin County
collin-county
Collin 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 Collin County
Composite operating context — active hazards, hydrologic features, surface-water condition, and infrastructure footprint — pulled from cached snapshots only.
Hydrology features
6 TWDB features
CARRIZO · CARRIZO · Brazos · Colorado
3 Major Aquifers · 3 Major River Basins · 1 HUC 8 Hydrologic Units
Surface water condition
4 impaired / 7 segments
57% of cached TCEQ surface segments in this county carry at least one impairment flag.
Basin: Trinity River Basin
Drinking-water exposure
8 SDWIS violations
6 public water systems with cached health-based violations since 2023-04-01. 43,555 people served by those systems.
Top PWS: CITY OF FARMERSVILLE (2 viol.) · Top contaminant code: 5200
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
1 microbial violations
1 PWS carry SDWIS rule-group 100 (microbial) violations — the same rule that triggers Texas boil-water advisories.
Top PWS: NORTH COLLIN SUD (1 viol.) · Latest: 2025-05-24
Treatment stress · E2 disinfectant
No disinfectant violations cached
No cached SDWIS rule-group 200 disinfectant violations in this county. Treatment-stress signal activates as new D/DBP rule violations post.
Impaired surface segments in this county
- White Rock Creek above White Rock LakeTrinity River Basin · contact recreation
- Pilot Grove CreekTrinity River Basin · contact recreation
- Wilson CreekTrinity River Basin · contact recreation
- Rowlett CreekTrinity River Basin · contact recreation
Impairment is a legal-use-support classification, not a direct harm claim.
Mismatch signals
Score: 34
- • surface-water impairment is present with no active hazard alerts in the cached feed
- • 4 impaired segments without any cached active permit pressure — enforcement gap candidate
Active alerts
No active alerts.
Stream gauges
No gauges loaded.
Notes
- • Nearby surface-water impairment context is additive only; it is not a standalone verdict on county-wide harm.
- • Surface-water segments: 7 (4 impaired)