Folsom Lake Intake Project

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The Folsom Lake Intake supplies raw water from Folsom Lake to the El Dorado Hills Water Treatment Plant (EDHWTP) where it is treated and then conveyed to customers in El Dorado Hills.  The water supplied through this system is critical to provide reliable potable water especially during the warmer months when water demands increase dramatically.

The original intake was constructed in 1958 and additional pumps were installed in 1994.  Both systems have reached the end of their useful life as constructed and have become increasingly unreliable in recent years.  A temporary third phase was constructed in 2010 however the temporary pumps have since failed entirely.

In addition to reliability issues, the facility must be modified to allow selective withdrawal of water based on temperature in order to preserve the cold-water pool in Folsom Lake to help enhance downstream habitat for anadromous fish (i.e., salmon and steelhead). The temperature control device (TCD) is a requirement of EID’s contract with the U.S. Bureau of Reclamation to allow EID to access its full allotment of water rights, which will be needed as demands in El Dorado Hills continue to increase.

The Folsom Lake Intake is a critical component to EID’s raw water supply. It is EID’s sole source of water from Folsom Lake, which makes up approximately 1/3 of EID’s water supply. Given its age and deteriorated condition, past pump failures, unnecessarily complex and outdated two stage pumping system, ongoing safety issues, and the difficulty in obtaining repair parts for 1958 vintage booster pumps, EID has made replacement of portions of the facility a high priority for the District.


The Folsom Lake Intake Improvements Project involves improvements to and the replacement of existing facilities associated with the raw water intake where water is diverted from Folsom Lake for delivery to EID’s drinking water system. A new intake consisting of stainless steel casings with temperature control withdrawal capability and new pumps will be installed along with other electrical and site modifications.

  • Construct a temperature control device for EID’s intake facilities in order to preserve the cold-water pool in Folsom Lake to help enhance downstream habitat for anadromous fish species
  • Replace selected existing pumps with more reliable and efficient equipment
  • Provide adequate raw water supply to meet the El Dorado Hills Water Treatment Plant’s permitted capacity
  • Maintain water delivery service during construction


May 8, 2019

Response to Comments IS/MND - May 2019

Response to Comments IS/MND - March 2019

 April 24, 2019

Community Meeting:  El Dorado Hills Fire Station, 1050 Wilson Boulevard @ 6pm
Meeting Materials:       Agenda     |    FAQs -April 24, 2019    |   PowerPoint   

April 15, 2019

A community meeting has been scheduled for Wednesday, April 24, 2019 at 6:00 p.m. to be held at the El Dorado Hills Fire Station located at 1050 Wilson Blvd. in El Dorado Hills.

The public comment period for the Initial Study/Proposed Mitigated Negative Declaration (IS MND) was extended to Thursday, April 25, 2019. Comments on the study may be emailed to  by April 25.

The public hearing for the IS MND will continue on Monday, May 13, 2019 during EID's regularly scheduled Board meeting.

Notice - Additional Comment Period, Public Hearing, and Community Meeting

April 10, 2019

The EID Board voted at its April 8 regular meeting to extend the comment period for the Initial Study/Proposed Mitigated Negative Declaration and hold a community meeting regarding the project.


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  • Phone or Mail: Call the office at (530) 622-4513 for information, to get on the mailing list, or to speak to a project representative.
  • General Project Questions eMail: