MADISONVILLE ON THE LAKE
PWSID: LA1103176 · Mandeville, LA · Serves 51 people
According to EPA Safe Drinking Water Information System (SDWIS), MADISONVILLE ON THE LAKE (PWSID LA1103176) in Mandeville, LA is listed as a CWS water system covering about 51 people. The same extract lists 10 health-based violation records spanning 2020-2025. Those 10 health-based rows for MADISONVILLE ON THE LAKE cover contaminants such as Groundwater Rule, LEAD AND COPPER RULE REVISIONS; they remain historical EPA registry entries, not a current compliance or drinkability score.
MADISONVILLE ON THE LAKE has 10 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Groundwater Rule, LEAD AND COPPER RULE REVISIONS. Recorded violations span 2020–2025. Day-to-day primacy enforcement for this system runs through the Louisiana drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Louisiana state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- LA1103176
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mandeville, LA
- Population Served
- 51
- Health Violations
- Yes (10)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Groundwater Rule | 8 | 8 |
| LEAD AND COPPER RULE REVISIONS | 2 | 2 |
Violation History (10)
| Contaminant | Health | Date |
|---|---|---|
| Groundwater Rule | Yes | Jul 15, 2025 |
| Groundwater Rule | Yes | Jul 15, 2025 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Groundwater Rule | Yes | Jun 11, 2023 |
| Groundwater Rule | Yes | Feb 8, 2020 |
| Groundwater Rule | Yes | Feb 8, 2020 |
| Groundwater Rule | Yes | Feb 8, 2020 |
| Groundwater Rule | Yes | Feb 8, 2020 |
| Groundwater Rule | Yes | Feb 8, 2020 |
Frequently Asked Questions
What does EPA SDWIS list for MADISONVILLE ON THE LAKE?
How many people does MADISONVILLE ON THE LAKE serve?
What violations does MADISONVILLE ON THE LAKE have?
What contaminants have been found in MADISONVILLE ON THE LAKE water?
Compare beyond Louisiana
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MADISONVILLE ON THE LAKE on cumulative violation count (10) and EPA-reported population served (51). Violation-count peers include ETHETE WATER SYSTEM, Quechan Utility, Grand Canyon West.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
MADISONVILLE ON THE LAKE (LA1103176) is drawn from EPA SDWIS. Nearby county systems in this extract include ST TAM PARISH- BEDICO -FAUBOURG-COQUILLE; ST TAM PARISH - BRIARWOOD TERRACE; CITY OF MANDEVILLE WATER SUPPLY; UTILITIES INC - NORTH PARK WATER SUPPLY. Health-based rows (10 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.