Water Quality: St. Martinville, LA
4 water systems • 13,974 people served
Multiple Health ViolationsWater Quality Summary
St. Martinville is served by 4 public water systems with a combined service population of 13,974 people, and has 129 EPA Safe Drinking Water Act violations on record. Critically, 75 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. St. Martinville's violation count is 34% above the national average for Louisiana. Contaminants associated with violations include Barium, Chlorine Dioxide, Contaminant 1006, E. coli, Stage 2 DBP.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Water Systems Serving St. Martinville
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CITY OF ST MARTINVILLE WATER SYSTEM | LA1099007 | Groundwater | 7,575 | 14 |
| ST MARTIN WATER WORKS DISTRICT 3 - CADE | LA1099028 | Groundwater | 3,249 | 23 |
| ST MARTIN WATER DISTRICT 4 - CATAHOULA | LA1099004 | Groundwater | 3,000 | 37 |
| ST MARTIN INDUSTRIAL PARK WATER SYSTEM | LA1099029 | Groundwater | 150 | 55 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Louisiana
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.