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Hidden Valley Lake board adopts cross-connection control plan required by state; hazard assessments due by 2027
Summary
The board approved a cross-connection control plan to comply with updated state guidance. The plan requires hazard assessments — potentially covering about 2,500 residential connections and 40–50 commercial/institutional connections — with completion of assessments targeted by 2027; the board discussed contractor options and homeowner responsibilities for backflow devices.
The Hidden Valley Lake Community Service District board voted to adopt a cross-connection control plan and submit it to the State Water Board to comply with new state handbook requirements.
S1 (general manager) explained the handbook change effective July 1, 2024, requires water districts to have a specialist-prepared plan and a hazard-assessment program. "One of the requirements is that all districts... have a cross connection control plan that has been done by a specialist that can be submitted to the state by 07/01/2025," S1 said.
The plan calls for hazard assessments of roughly 2,500 residential connections and an estimated 40–50 commercial or institutional (CII) connections. The district is under the 3,000-connection threshold that allows contracting the work; staff recommended seeking cost estimates from consultants (West Yost was discussed as a firm that can provide the required specialist sign-off).
Board members discussed which customer types (pools, wells, booster pumps) are most likely to be high hazard and whether the district or homeowners would be responsible for installing backflow devices. Directors emphasized the board's intent to phase assessments, begin with commercial properties that already tend to have backflow devices, and avoid immediate shutoffs; S1 said the hazard assessment work would likely be completed by 2027 and that the plan gives the district "teeth" to implement follow-up measures if necessary.
The board moved and approved resolution 2025-14 to adopt the cross-connection control plan and authorized staff to submit it to the state, with direction to return with ordinance language updates referencing the plan if required.
Next steps: staff will request cost estimates from consultants, include the plan submission in state filings, and return with proposed ordinance edits and implementation timelines.
