Joyce Water Supply
PWSID: LA1127008
This system has no unresolved violations. The most recent violation on record was 2025-01-01.
This system has more violations on record than 93% of water systems in Louisiana.
Violation trend: 1.4 per year over the last 5 years, down from 11.6 per year in the previous 5.
System Details
| Population Served | 474 |
| Service Connections | 158 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Mandeville |
| EPA ZIP on File | 70471 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0020 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
Violation History (91 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 2950 | MCL Measured: 0.0810 MG/L (limit: 0.0800 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0810 MG/L (limit: 0.0800 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0940 MG/L (limit: 0.0800 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0940 MG/L (limit: 0.0800 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 2950 | MCL Measured: 0.0820 MG/L (limit: 0.0800 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 7500 | Other | 2020-11-06 | Returned to Compliance | |
| 2950 | MCL Measured: 0.0950 MG/L (limit: 0.0800 MG/L) | 2020-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0950 MG/L (limit: 0.0800 MG/L) | 2020-10-01 | Yes | Returned to Compliance |
| 7500 | Other | 2020-07-17 | Returned to Compliance | |
| 2950 | MCL Measured: 0.1400 MG/L (limit: 0.0800 MG/L) | 2020-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1400 MG/L (limit: 0.0800 MG/L) | 2020-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2020-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0670 MG/L (limit: 0.0600 MG/L) | 2020-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1920 MG/L (limit: 0.0800 MG/L) | 2020-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1920 MG/L (limit: 0.0800 MG/L) | 2020-04-01 | Yes | Returned to Compliance |
| 7500 | Other | 2020-02-14 | Returned to Compliance | |
| 7500 | Other | 2020-02-10 | Returned to Compliance | |
| 7500 | Other | 2020-02-10 | Returned to Compliance | |
| 0700 | TT | 2020-01-01 | Yes | Returned to Compliance |
| 0700 | TT | 2020-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0740 MG/L (limit: 0.0600 MG/L) | 2020-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0740 MG/L (limit: 0.0600 MG/L) | 2020-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.2080 MG/L (limit: 0.0800 MG/L) | 2020-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.2080 MG/L (limit: 0.0800 MG/L) | 2020-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0770 MG/L (limit: 0.0600 MG/L) | 2019-10-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0770 MG/L (limit: 0.0600 MG/L) | 2019-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1970 MG/L (limit: 0.0800 MG/L) | 2019-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1970 MG/L (limit: 0.0800 MG/L) | 2019-10-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0630 MG/L (limit: 0.0600 MG/L) | 2019-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 0.0630 MG/L (limit: 0.0600 MG/L) | 2019-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1490 MG/L (limit: 0.0800 MG/L) | 2019-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1490 MG/L (limit: 0.0800 MG/L) | 2019-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0980 MG/L (limit: 0.0800 MG/L) | 2019-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0980 MG/L (limit: 0.0800 MG/L) | 2019-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0970 MG/L (limit: 0.0800 MG/L) | 2019-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0970 MG/L (limit: 0.0800 MG/L) | 2019-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1030 MG/L (limit: 0.0800 MG/L) | 2018-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1030 MG/L (limit: 0.0800 MG/L) | 2018-10-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 62.00 UG/L (limit: 60.00 UG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 62.00 UG/L (limit: 60.00 UG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 153.00 UG/L (limit: 80.00 UG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 153.00 UG/L (limit: 80.00 UG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 70.00 UG/L (limit: 60.00 UG/L) | 2018-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 70.00 UG/L (limit: 60.00 UG/L) | 2018-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 180.00 UG/L (limit: 80.00 UG/L) | 2018-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 180.00 UG/L (limit: 80.00 UG/L) | 2018-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 67.00 UG/L (limit: 60.00 UG/L) | 2018-01-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 67.00 UG/L (limit: 60.00 UG/L) | 2018-01-01 | Yes | Returned to Compliance |
Showing 50 of 91 historical violations.
Understanding This Water System's Record
Joyce Water Supply is a community water system water system that draws from groundwater sources and serves a population of 474 in Mandeville, Louisiana. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.