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
Jefferson County
jefferson-county
Jefferson 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 Jefferson County
Composite operating context — active hazards, hydrologic features, surface-water condition, and infrastructure footprint — pulled from cached snapshots only.
Hydrology features
4 TWDB features
GULF_COAST · CARRIZO · Neches-Trinity · Sabine Lake
3 Major Aquifers · 1 Major River Basins · 1 HUC 8 Hydrologic Units
Surface water condition
9 impaired / 21 segments
43% of cached TCEQ surface segments in this county carry at least one impairment flag.
Basin: Bays and Estuaries, Gulf of Mexico+
Drinking-water exposure
45 SDWIS violations
8 public water systems with cached health-based violations since 2023-04-01. 105,699 people served by those systems.
Top PWS: CITY OF NEDERLAND (15 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
15 microbial violations
4 PWSes carry SDWIS rule-group 100 (microbial) violations — the same rule that triggers Texas boil-water advisories. 12 of those are Tier 1 (24-hour public notice).
Top PWS: CITY OF PORT ARTHUR (5 viol.) · Latest: 2025-03-01
Treatment stress · E2 disinfectant
27 disinfectant violations
3 PWSes carry SDWIS rule-group 200 (Disinfectants and Disinfection Byproducts Rule) violations — the same rule family that drives E2 disinfectant residual reporting.
Top PWS: JEFFERSON COUNTY WCID 10 (12 viol.) · Top contaminant code: 2950 · Latest: 2025-10-01
Impaired surface segments in this county
- Shallow Prong LakeNeches-Trinity Coastal Basin · aquatic life
- Sabine PassBays and Estuaries · fish consumption
- Sabine LakeBays and Estuaries · fish consumption
- Hillebrandt BayouNeches-Trinity Coastal Basin · aquatic life, contact recreation
- Alligator Bayou and Main Canals A, B, C, and DNeches-Trinity Coastal Basin · aquatic life
- Star Lake CanalNeches River 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
- • 9 impaired segments without any cached USGS stream gauges — under-monitored surface water
- • 9 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: 21 (9 impaired)