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
Brazoria County
brazoria-county
Brazoria 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 Brazoria County
Composite operating context — active hazards, hydrologic features, surface-water condition, and infrastructure footprint — pulled from cached snapshots only.
Hydrology features
8 TWDB features
GULF_COAST · CARRIZO · Brazos · Brazos-Colorado
4 Major Aquifers · 3 Major River Basins · 5 HUC 8 Hydrologic Units
Surface water condition
23 impaired / 36 segments
64% of cached TCEQ surface segments in this county carry at least one impairment flag.
Basin: Bays and Estuaries, Brazos River Basin+
Drinking-water exposure
364 SDWIS violations
81 public water systems with cached health-based violations since 2023-04-01. 27,622 people served by those systems.
Top PWS: VILLAGE OF SURFSIDE BEACH (71 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
22 microbial violations
10 PWSes carry SDWIS rule-group 100 (microbial) violations — the same rule that triggers Texas boil-water advisories. 2 of those are Tier 1 (24-hour public notice).
Top PWS: WATERSTONE RANCH (7 viol.) · Latest: 2025-04-19
Treatment stress · E2 disinfectant
196 disinfectant violations
10 PWSes carry SDWIS rule-group 200 (Disinfectants and Disinfection Byproducts Rule) violations — the same rule family that drives E2 disinfectant residual reporting.
Top PWS: COMMODORE COVE IMPROVEMENT DISTRICT (46 viol.) · Top contaminant code: 2950 · Latest: 2025-10-01
Impaired surface segments in this county
- Bastrop Bay/Oyster Lake (Oyster Waters)Bays and Estuaries · oyster waters
- Drum Bay (Oyster Waters)Bays and Estuaries · oyster waters
- Christmas Bay (Oyster Waters)Bays and Estuaries · oyster waters
- Chocolate BayBays and Estuaries · fish consumption
- Chocolate Bay (Oyster Waters)Bays and Estuaries · oyster waters
- San Bernard River TidalBrazos-Colorado Coastal Basin · contact recreation
Impairment is a legal-use-support classification, not a direct harm claim.
Mismatch signals
Score: 56
- • surface-water impairment is present with no active hazard alerts in the cached feed
- • 23 impaired segments without any cached USGS stream gauges — under-monitored surface water
- • 23 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.
- • NFHL political jurisdictions mapped: 157
- • Surface-water segments: 36 (23 impaired)