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Sandmound Rd Area - Water Quality

Currently, the independent well (M-27) serving Willow Park Marina and Mariner Estates, is under a compliance order from Contra Costa Health Services to address elevated arsenic levels as of March 31, 2021.

The compliance order requires a permanent solution, engineered by the District, within the next three years. Quarterly notifications are also required to be sent to property owners.

All updates and documentation regarding current systems under a county compliance order will be found on this page.

Current Systems Under County Compliance Order

M-27 (Willow Park Marina and Mariner Estates)

Delta Mutual Water Company

Upcoming Meetings

There will be a Special Board Meeting on Monday, May 10, 2021 where the greater Sandmound Rd area water quality and community water systems update and discussion will take place.  Please visit our Board Agendas and Minutes page for more information.

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