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 county intelligence
Cross-source county ranking context from the Atlas county explorer service, with committed Wave 1 analytics overlays to help answer what changed and why.
Saving to the shared watchlist workspace.
Common county terms
Texas Water Development Board (TWDB)Hydrologic Unit Code (HUC)Public Water System (PWS)
92.15
Composite score
12
Composite rank
5
Highlight lanes
#6
Wave 1 risk rank
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.
Analytics snapshot
Risk trend from committed snapshots
Uses the committed county-history artifact only. Atlas does not backfill imaginary periods; if a previous snapshot is missing, this panel says so.
Risk scorePressure score
Risk score
6.88 · No change
Pressure score
10 · No change
Systems / violations
3 flagged systems shown
Pressure quadrant
High pressure + high risk
Interpretation
What changed and why
Jefferson County is currently driven most by permits in the county explorer stack, while the committed analytics lane classifies it as high pressure + high risk.
Across the latest two committed snapshots, both the county risk score and pressure score are unchanged, so the analytical read is about persistent position rather than a new spike. The county is steady across the latest committed comparison window.
High pressure + high risk
This county sits above the current statewide median on both the pressure and risk axes in the committed scatter snapshot.
Grounding and caveats
County analytics are derived from committed SDWIS, ACS county population, surface-water-quality, and TWDB hydrology snapshots. History appends one real snapshot per run and never fabricates prior periods.
- • countyRiskScore is the statewide 0-100 normalization of summed SDWIS DWRS raw scores per county.
- • pressureScore is the statewide 0-100 normalization of impaired segment counts per 100k residents when population is available; otherwise it falls back to raw impaired segment count.
- • Rank deltas compare the newest county-history snapshot against the immediately preceding real snapshot.
- • Both axes are normalized to a 0-100 statewide range for stable chart consumption.
Driver decomposition
Top explorer lanes ranked against the statewide county stack. Percentile and contribution values are derived from the reusable Wave 1 analytics spine.
Permits
Rank #7 · 97.68 percentile
Value 68
19.54 pts into composite
21.20% of the current composite score from this lane.
Sales tax rates
Rank #15 · 94.59 percentile
Value 90
18.92 pts into composite
20.53% of the current composite score from this lane.
County returns
Rank #17 · 93.82 percentile
Value 35651254.63
18.76 pts into composite
20.36% of the current composite score from this lane.
CPI investigations
Rank #21 · 92.28 percentile
Value 15503
18.46 pts into composite
20.03% of the current composite score from this lane.
Top systems behind the county signal
When county-history carries system-level highlights, Atlas surfaces the systems contributing the most to the latest committed risk snapshot.
CITY OF NEDERLAND
PWS TX1230006
Risk contribution 3.28
15 violations in the cached snapshot
CITY OF PORT ARTHUR
PWS TX1230009
Risk contribution 2.67
5 violations in the cached snapshot
JEFFERSON COUNTY WCID 10
PWS TX1230003
Risk contribution 0.67
12 violations in the cached snapshot
Operator lane
Operators visible in this county snapshot
Ranked only from the current permittee and CID applicant snapshot. Atlas links out where operator presence is visible; it does not invent a deeper hierarchy or historical market share.
1 visible operators
ENTERGY TEXAS INC
1 permits · 0 cases · 0 procedural pressure in Jefferson County
Statewide footprint: 2 counties
Saving to the shared watchlist workspace.
Current record mix: 0 hearing requests · 0 public meeting requests · 0 comments across visible cases.
County ↔ operator navigation
Move from county stress to named operators
County rankings show where signal concentrates. Operator pages show which named permittees and applicants are currently visible inside that signal.
The strongest visible crosslinks here come from ENTERGY TEXAS INC. Use those pages to inspect county concentration, case posture, and permit roster.
- • County page: risk, hydrology, and statewide rank context.
- • Operator page: county footprint, open CID case posture, and pending permit roster.
- • Permit view: county-scoped transaction list for the current public snapshot.
Highlights
Top-ranked source lanes per the cached county overview.
Permits
Rank 7 · Value 68
Sales tax rates
Rank 15 · Value 90
County returns
Rank 17 · Value 35651254.63
CPI investigations
Rank 21 · Value 15503
Water districts
Rank 28 · Value 17
Hydrology and surface-water condition fold into the investigation context block above; Texas Water Development Board (TWDB) + Hydrologic Unit Code (HUC) features are shared with the water county profile.