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The State Water Interconnection Project will consist of a seven-mile pipeline that connects Calleguas Municipal Water District’s system to the City of Ventura’s system. The pipeline will enable the delivery of State Water to Ventura. Since 1971, the City of Ventura has owned rights to a 10,000 acre feet per year water entitlement through the California State Water Project. The State Water Interconnection Project is a viable backup supply option.
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The City currently does not have the infrastructure to have its State Water entitlement delivered. The State Water Interconnection between Ventura and Calleguas will allow for a beneficial water exchange, especially important for emergency response and when local supplies are impacted. The connection will also facilitate direct delivery of State Water to United Water Conservation District and direct or in-lieu delivery to Casitas Municipal Water District. Additionally, the connection will allow the City to deliver water to Calleguas during an emergency or imported water supply outage.
The City’s existing local water supplies continue to be challenged by drought, environmental, regulatory, operational, and legal constraints. Due to these impacts, the City recognizes the need for a more diversified water supply. The State Water Interconnection will provide a near-term water supply source to make up for losses in annual yield from existing water sources (Lake Casitas, Ventura River, and groundwater). VenturaWaterPure will provide a rain- independent, locally-owned water source that ensures environmental and legal compliance. The State Water Interconnection Project and VenturaWaterPure provide a diverse and reliable water supply solution to supplement our existing local sources.
The State Water Interconnection Project, as proposed, consists of a 7-mile pipeline that connects the Calleguas Municipal Water District system to the City of Ventura’s system. This project provides regional water supply benefits and cost sharing opportunities with Calleguas Municipal Water District, Casitas Municipal Water District, and United Conservation Water District. In addition, the proposed 7-mile State Water Interconnection Project will deliver treated water to Ventura Water customers.A connection to Lake Piru or Castaic Lake would require approximately 28 to 40 miles of pipeline construction. In addition, a connection at Lake Piru would not provide direct access to State Water. Water would flow from Pyramid Lake, a State Water reservoir, to Lake Piru via creeks resulting in water loss and environmental restrictions. Additionally, both the 28 and 40 mile pipeline projects would deliver raw water to the City. The raw water would need to be treated before distribution to customers which would require a Surface Water Treatment Plant. Due to these challenges, a Lake Piru or Castaic Lake connection would not be a cost effective, time-efficient, or environmentally preferable project alternative.