OLD SUGAR MILL WINERY

Water Quality Snapshot: OLD SUGAR MILL WINERY

OLD SUGAR MILL WINERY is a private-owned non-transient non-community water system that delivers drinking water to 50 residents in CLARKSBURG, California (Yolo County) through 6 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 225 total violations for this system , of which 81 (36%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 141 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 58 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across California, EPA tracks 7,249 public water systems serving 42,404,883 people, with 153,308 cumulative violations and 63,983 health-based violations on record. About 89% of systems in the state carry at least one violation, and state-wide the average per system is 21.1 violations. OLD SUGAR MILL WINERY's 225 violations sit above the California average. Statewide, 447 of 694 UCMR5-tested systems have reported PFAS detections (64.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.