Relocation and Consolidation of Wastewater Collections and Treatment Operations

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El Dorado Hills

The El Dorado Irrigation District (District or EID) is proposing to consolidate its existing wastewater collections operations facility currently located on Bass Lake Road to the District’s El Dorado Hills Wastewater Treatment Plant (EDHWWTP) site along Latrobe Road to improve operational efficiencies and help meet the long-term needs of the agency.

The proposed relocation project has several elements, including: (1) sale of the District’s Bass Lake property to the El Dorado Hills Community Services District (CSD) for repurpose as a community park facility; (2) land use review and approval by the County of El Dorado to allow for the relocation to the EDHWWTP site; (3) environmental review to evaluate the relocation project’s potential environmental impacts; (4) construction of necessary facilities and site improvements at EDHWWTP  to support relocation of operations; and (5) relocation of the District wastewater collections operations and maintenance staff and associated equipment and materials from Bass Lake to EDHWWTP.  Further detail regarding the proposed relocation project is provided below.

Existing Bass Lake Wastewater Collections Operations Facility

The District’s wastewater collection and maintenance facility located at Bass Lake has been in operation for several decades. If the facility was to remain serving the District in this capacity, significant capital reinvestment would be required to provide safe and reliable facilities for these District operations and meet the growing wastewater maintenance operations of the area. In light of the constraints and costs associated with continuing operations at the Bass Lake site, the District is proposing to sell the property to help support a community park and relocate the wastewater collections and maintenance operations to an existing wastewater treatment operations facility owned and operated by EID since 1962.

Proposed Sale of Bass Lake Property to El Dorado Hills Community Services District

In June of 2017, the EID Board of Directors authorized a purchase and sale agreement with the CSD for the sale of the District’s Bass Lake parcel that currently supports the District’s wastewater collections operations and maintenance. The purchase and sale agreement is contingent upon the successful relocation of the District’s operations, including completion of environmental review, obtaining necessary County land use approvals, and construction of facility improvements at the EDHWWTP site.

The CSD is seeking to acquire the Bass Lake property as part of the CSD’s Bass Lake Park project.  The Bass Lake Park project is a proposed park that would be the largest park and recreational project in the El Dorado Hills area. See  

The sale of the Bass Lake property will allow the District to utilize the sale proceeds  to develop improvements at the EDHWWTP to support the District’s wastewater collections and maintenance operations together with the existing wastewater treatment operations and maintenance activities already existing at the EDHWWTP for over 50 years.

Proposed Relocation and Site Improvements at El Dorado Hills Wastewater Treatment Plant Site

The District is proposing to relocate the Bass Lake wastewater collections operations to be on the same site as the wastewater treatment operations at the EDHWWTP. The purpose of the proposed relocation project is to consolidate the wastewater collections and treatment operations in the El Dorado Hills area, while concurrently addressing facility improvement costs and the increasingly constrained operations of the current Bass Lake property. 

In order for the EDHWWTP site to accommodate the relocated operations, the District is proposing to make various site improvements, including

  • improved parking and access;
  • renovation of an existing building;
  • construction of additional equipment and storage buildings;
  • and visual screening along the southern end of the site.

The District has submitted an application for a Conditional Use Permit with El Dorado County, to allow for the relocated operations and site improvements at the EDHWWTP.  The project’s potential environmental impacts will be evaluated, consistent with the California Environmental Quality Act. 

Additional improvements to EID’s Latrobe Road Facility

In addition to the relocation project, the District is also completing odor control upgrades at the facility in 2019. Staff anticipates requesting Board approval in April to initiate construction this summer.

The District is continuing to evaluate alternative energy supplies, including potential expansion of the existing solar photovoltaic array located at the facility.

Proposed upgrades for this project are anticipated to be brought to the Board for consideration later this summer.

 For specific project questions, contact Mike Baron at 530-642-4188 or

To receive notice when more information is posted about this project go to eNews Sign Up and under the Calendar News items select  WW Consolidation Project.