DICHLOROMETHANE in U.S. Drinking Water
Health-based violation data for DICHLOROMETHANE from EPA Safe Drinking Water Information System (SDWIS). Covers all community water systems with violations on record.
DICHLOROMETHANE has been found in violation of EPA standards in 10 water systems across 3 states, with 77 total health-based violations recorded. The most affected states are California, West Virginia, North Carolina.
DICHLOROMETHANE is regulated under the EPA Safe Drinking Water Act, which sets enforceable Maximum Contaminant Levels (MCLs) and associated treatment technique requirements for public water systems. The EPA Safe Drinking Water Information System (SDWIS) tracks every recorded violation nationwide and links it back to the specific public water system (PWSID), violation type, and begin date.
Across the United States, PlainEnviro's joined extract contains 77 health-based violation records carrying DICHLOROMETHANE (EPA code 2964) across 10 active community water systems in 3 states. Raw record counts are highest in California, West Virginia, North Carolina, with California accounting for 11 records across 1 system. Health-effect prose is shown only when the official ECHO substance name matches a verified topic; otherwise the portal stays silent rather than inventing guidance.
A health-based violation does not mean residents were necessarily harmed, it means the contaminant exceeded the federal MCL in a compliance sample, triggering notification and remediation requirements. States and utilities maintain primary enforcement responsibility. To check the status of a specific water system, request its most recent Consumer Confidence Report or consult the EPA's Drinking Water Watch portal for the corresponding state.
Violations by State
States ranked by number of health-based violations for DICHLOROMETHANE.
| # | State | Violations | Systems Affected |
|---|---|---|---|
| 1 | California | 11 | 1 |
| 2 | West Virginia | 8 | 1 |
| 3 | North Carolina | 4 | 1 |
Most Affected Water Systems
Top 50 water systems by number of DICHLOROMETHANE health-based violations.
| Water System | State | Violations |
|---|---|---|
| SHADY OAKS MOBILE HOME PARK | CA | 11 |
| PRESTON COUNTY PSD 1 | WV | 8 |
| BACKWOODS-SADDLEBROOK COMM WS | NC | 4 |
Frequently Asked Questions
Is DICHLOROMETHANE in my water?
DICHLOROMETHANE has been detected in violation of EPA health standards in 10 water systems across 3 states. To check your specific utility, look up your annual Consumer Confidence Report (CCR) - water systems are required to disclose all violations.
How many water systems have DICHLOROMETHANE violations?
EPA SDWIS records show 10 community water systems with health-based DICHLOROMETHANE violations, totaling 77 violations. These represent cases where the contaminant exceeded the EPA Maximum Contaminant Level (MCL).
Which states have the most DICHLOROMETHANE violations?
The states with the most DICHLOROMETHANE violations are: California (11 violations), West Virginia (8 violations), North Carolina (4 violations).
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About This Data
Violation data is from the EPA Safe Drinking Water Information System (SDWIS). Only health-based violations are shown, these include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Monitoring and reporting violations are excluded. Data may not reflect the most current enforcement actions.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.