Hammond, LA: 4 Health Violations — 87/100 (2026)
4 ZIP codes · 9 water systems · Updated 2026-06-03
Across Hammond, EPA monitoring data shows low violation rates and healthy safety margins — a pattern that places the city well above LA's average for drinking water compliance across recent reporting cycles.
How Hammond Compares
Data: EPA SDWIS Last verified: 2026-06-03
Hammond Water: The Quick Version
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.004 mg/L.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 14.99 — above typical levels.
Water Systems Serving Hammond
3 independent water providers serve Hammond, LA — 9 systems appear in federal records.
Overview
We track water quality and home safety data for 4 ZIP codes in Hammond, Louisiana (population ~54,595), covering 9 community water systems serving approximately 119,107 people region-wide.
4 of 4 ZIP codes (100%) have recorded EPA violations. 4 health-based violations documented.
Home Safety Score
Average Home Safety Score for Hammond: A (87/100)
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
Hammond water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0040 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 4 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 10 | 4 |
| Stage 2 DBP Rule | Treatment Technique | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 70401 | B | 3 | 1 | Tangipahoa Parish Water District |
| 70402 | A | 3 | 1 | City of Hammond Water System |
| 70403 | B | 3 | 1 | Tangipahoa Parish Water District |
| 70404 | A | 3 | 1 | Tangipahoa Parish Water District |
All ZIP Codes in Hammond
- 70401 [B] — 3 violations ⚠
- 70402 [A] — 3 violations ⚠
- 70403 [B] — 3 violations ⚠
- 70404 [A] — 3 violations ⚠
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 Hammond
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
Key Contaminants Detected in Hammond
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Hammond: Remediation Cost in Perspective
While no remediation project is entirely without cost, the relationship between estimated remediation and property values in Hammond is notably favorable — the equity share is small enough that the household financial perspective is one of proportionality rather than pressure, and most homeowners can treat it as routine planning rather than a significant financial event.
Remediation costs in Hammond are relatively low compared to home values. The $1,150–$2,750 estimated range is a small fraction of median property value. Home values are 33% above the Louisiana average.
Protecting Children from Lead in Hammond
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Hammond appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Hammond
FEMA data places 100% of Hammond's ZIP codes inside designated flood zones, and the NFIP claim record confirms the real-world impact: 1652 filed claims representing decades of documented flood events with consequences for property and, at sufficient severity, for local water infrastructure.
Hammond has a significant flood history with 1,652 FEMA flood insurance claims on record, averaging $23,977 per claim. With 100% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
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>$1,800</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 Hammond, LA