Mahopac Water Quality
New York
The tap water in Mahopac, New York is served by 18 EPA-regulated water systems covering approximately 10,190 people. 76 health-based violations are on record, most recently for 1017 in 2024. Data source: EPA Safe Drinking Water Information System.
Drinking water in Mahopac, New York is delivered through 18 EPA-regulated community water systems serving an estimated 10,190 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Mahopac shows 76 total violations across all 18 systems, of which 76 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 1017, 1028, 0200. 1 TRI-reporting industrial facility is also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the New York drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| CARMEL WD 2 | 5,000 | 0 | Clean |
| CARMEL WD 3 | 1,350 | 8 | Health |
| CARMEL WD 8 | 1,000 | 1 | Health |
| CARMEL WD 4 | 450 | 20 | Health |
| CARMEL WD 9 | 400 | 0 | Clean |
| CARMEL WD 14 | 400 | 0 | Clean |
| CARMEL WD 7 | 300 | 0 | Clean |
| CARMEL WD 12 | 300 | 0 | Clean |
| YORKVIEW ESTATES W S INC | 200 | 0 | Clean |
| CARMEL WD 6-SHELL VALLEY | 200 | 0 | Clean |
| CARMEL WD 5 | 150 | 0 | Clean |
| CARPENTER TRAILER PARK | 100 | 0 | Clean |
| WHITE SAIL CONDOMINIUM W.S. | 85 | 30 | Health |
| WATER CLUB CONDOMINIUMS W.S. | 75 | 4 | Health |
| SHORE ESTATES OWNERS ASSOC INC | 60 | 0 | Clean |
| MIDDLEBRANCH APTS | 50 | 9 | Health |
| CARMEL WD 6-TOMAHAWK CREEK | 50 | 0 | Clean |
| LAKE PROPERTIES | 20 | 4 | Health |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 1017 | 2024-01-01 |
| 1017 | 2024-01-01 |
| 1017 | 2024-01-01 |
| 1017 | 2023-11-14 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-10-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-07-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-04-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1017 | 2023-01-01 |
| 1028 | 2023-01-01 |
TRI Facilities in Mahopac
| Facility | Total Releases |
|---|---|
| Enviro Waste | 294 lbs |
Frequently Asked Questions
Is Mahopac, New York water safe to drink? ▼
How many water violations does Mahopac have? ▼
What contaminants were found in Mahopac water? ▼
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Where does Mahopac get its drinking water? ▼
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About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.