Terrebonne County, Louisiana
11 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-04
Across Terrebonne County, EPA compliance data for 11 ZIP codes sits at a moderate level — not alarming, but not uniformly clean either.
How Terrebonne County Compares
How Terrebonne County Compares
Terrebonne County scores 16 points below the Louisiana state average (71/100) and 13 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Terrebonne County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.4 (asthma 10.4%, diabetes 15.1%)
Estimated additional annual cost per homeowner: $6,147, driven primarily by sea_level
Infrastructure: 0.302% avg pipe failure probability
58.2% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $6,147
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
52,384 housing units in Terrebonne County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Terrebonne County
Remediation costs are relatively manageable for most homeowners in Terrebonne County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Terrebonne County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 3 systems in Terrebonne County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | SCHRIEVER WATER TREATMENT SERVICE AREA | 116,460 | 4 |
| 2 | Houma Water Treatment Service Area | 11,658 | 4 |
| 3 | LAFOURCHE WATER DISTRICT 1 | 81,609 | 2 |
All ZIP Codes in Terrebonne County
11 ZIP codes tracked in Terrebonne County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70361 | Houma | 85 | A | 1 | — |
| 2 | 70360 | Houma | 80 | B | 1 | $297K |
| 3 | 70363 | Houma | 75 | B | 1 | $144K |
| 4 | 70364 | Houma | 75 | B | 1 | $196K |
| 5 | 70343 | Bourg | 47 | D | 0 | $197K |
| 6 | 70359 | Gray | 47 | D | 0 | $161K |
| 7 | 70394 | Raceland | 42 | D | 0 | $184K |
| 8 | 70397 | Theriot | 42 | D | 0 | $161K |
| 9 | 70344 | Chauvin | 37 | F | 0 | $116K |
| 10 | 70353 | Dulac | 37 | F | 0 | $89K |
| 11 | 70377 | Montegut | 37 | F | 0 | $119K |
Recommended Buyer Guides for Terrebonne County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 58.2% of homes built before 1978
Deep Dive Reports
Detailed analysis for Terrebonne County, Louisiana
Overview
Terrebonne County in Louisiana covers 11 ZIP codes with an average Home Safety Score of C (55/100).
4 of 11 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Louisiana water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.