Alief, TX Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Based on current monitoring, Alief holds an above-average drinking water safety record for TX — violations are infrequent and typically minor when they do appear.
How Alief Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Alief Water
- Estimated remediation: $1,200 per household.
- CDC health risk index: 11.98.
Who Supplies Your Water in Alief
The structure of water supply in Alief, TX is straightforward: one utility provides the bulk of residential service among 1 tracked system, concentrating rate-setting and infrastructure decisions under a single organization.
Overview
We track water quality and home safety data for 1 ZIP code in Alief, Texas, covering 1 community water system serving approximately 2,970,543 people.
No EPA violations recorded across any ZIP codes in Alief — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Alief: 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
Alief water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Alief
- 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 |
|---|---|---|---|
| 77411 | B | CITY OF HOUSTON | 2,970,543 |
All ZIP Codes in Alief
- 77411 [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.
Health Outcomes in Alief
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
Flood & Climate Risk in Alief
Over the multi-decade window covered by the National Flood Insurance Program, Alief has accumulated 4 claims — a total that suggests more than isolated flood exposure. With 100% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Alief has a moderate flood history with 4 FEMA claims averaging $8,625 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Alief, TX