Why doesn’t the City of Ventura pursue a connection to the State Water Project at Lake Piru or Castaic Lake rather than a connection through Calleguas Municipal Water District’s system?

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.

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1. What is the State Water Interconnection Project?
2. Why connect to State Water?
3. Why construct both the State Water Interconnection and VenturaWaterPure Projects?
4. Why doesn’t the City of Ventura pursue a connection to the State Water Project at Lake Piru or Castaic Lake rather than a connection through Calleguas Municipal Water District’s system?