Dennis, TX Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
How does Dennis tap water hold up under EPA scrutiny? Above average for TX — documented violations are uncommon and the safety grade reflects a clean overall record.
How Dennis Compares
Data: EPA SDWIS Last verified: 2026-06-03
Dennis Water: The Quick Version
- Estimated remediation: $2,300 per household.
- CDC health risk index: 12.39 — above typical levels.
Water Systems Serving Dennis
A single dominant system supplies most of Dennis, TX. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Dennis, Texas, covering 1 community water system serving approximately 1,248 people.
No EPA violations recorded across any ZIP codes in Dennis — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Dennis: B (73/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Dennis water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Dennis
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 76439 | B | CITY OF LIPAN | 1,248 |
All ZIP Codes in Dennis
- 76439 [B]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Dennis
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Climate-Related Water Risk for Dennis
Flood risk in Dennis sits in a low-exposure range — NFIP claim volume is contained and FEMA flood zones cover a small portion of the area. For residents monitoring water quality, low flood frequency generally correlates with lower probability of the contamination events that flooding can introduce: overwhelmed treatment intake, well infiltration, and distribution backflow all require significant event size to materialize.
Dennis has a relatively low flood history with 1 FEMA claims on record. While risk is limited, severe weather events can still impact water infrastructure.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,300</strong> remediation cost per household.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Dennis, TX