Skip to Main Content
Contact Us

Project: Los Robles Golf Course Groundwater Utilization Pilot Project

Description: The City of Thousand Oaks relies exclusively on imported water, which is becoming increasingly strained and less reliable. The City is looking into opportunities to reduce dependence on imported water supplies and increase local water supply reliability. In 2018, the City evaluated the feasibility of developing the Los Robles Golf Course (LRGC) groundwater well as a source of irrigation and potable water and concluded that desalination would enable production of about 920 acre-feet of groundwater for beneficial uses, but pilot testing was recommended prior to full-scale implementation. The Proposed Project consists of installation and 24-week operation of a primary RO system and Closed Circuit RO system, with iron/manganese pretreatment and Clean-In-Place systems. Prior to operations, tasks Include developing a testing protocol, preparing system design, filing a CEQA Notice of Exemption and procuring equipment. The Pilot system will be located within the parking lot of the LRGC in the City of Thousand Oaks. The system would treat about 20 gallons per minute. Regular progress meetings will be held, and a Pilot Study Report will be prepared upon completion summarizing work performed and outlining results based recommendations. Equipment used as part of the pilot testing will be rented from vendors and returned to these vendors upon completion of pilot testing.

Reference Number: 3860-P01-344

Implemented By: City of Thousand Oaks

Objective: The objectives of the Pilot Project are to obtain performance data of Reverse Osmosis (RO) and Closed Circuit Reverse Osmosis (CCRO) with and without iron/manganese pretreatment, assess and optimize performance to refine system design, and reduce treatment life cycle costs. The Pilot would also help confirm limiting foulants/scalants to optimize pretreatment and refine Clean-In-Place system design; enable refining posttreatment design criteria; and determine brine quality prior to full-scale implementation.

Type: Water Management

Total Cost: $804,037.64

Project Status: Complete and Fully Paid

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 12/31/2020    Actual Completion: 12/30/2020

Associated Counties:

Project Benefits a Disadvantaged Community (or SDAC): No

Contribution SourcesContribution DateContribution Amount
Local Contribution7/19/2019$402,018.82
Prop. 1, Water Recycling6/11/2019$402,018.82

Project MetricMetric TopicQuantityUnit
Water ManagementDesalination  

Water Action Plan Target

Make Conservation a California Way of LifeAction Description
Increase Regional Self-Reliance and Integrated Water Management Across All Levels of GovernmentAction Description
Manage and Prepare for Dry PeriodsAction Description


loading loading