Skip to Main Content
Contact Us

Project: Sierra County Calpine Water Quality and Supply - Planning Project

Description: "The Sierra County (Calpine) Waterworks District No. 1 water system uses two groundwater wells as the source of water supply, Wells #1 and #2. Well #1 produces water with arsenic concentrations above the trigger (running annual average is approximately 7-8 ppb) while Well #2 consistently produces water which excess the arsenic MCL of 10 ppb (annual running average ranges from 15-25 ppb). Additionally, while the total production capacity of the two wells meets existing peak demand, the system does not have any backup sources needed to take sources offline for maintenance or for emergency use. This planning project includes an evaluation of feasible alternatives to solving the water quality and quantity problems, including: drill a test well, collect and analyze water samples, and perform pumping tests to locate a groundwater source which can provide the community with additional source capacity; and conducting a arsenic treatment pilot study to evaluate the feasibility of installing centralized treatment. Engineering and environmental work associated with the selected construction project will also be completed. A water rate study and a Technical, Managerial, and Financial (TMF) assessment will be prepared based upon the selected construction project."

Reference Number: 3940P01D1702015

Implemented By: Sierra County (Calpine) Waterworks District No. 1

Objective: The project consists of the drilling of a test well to provide additional capacity necessary to meet peak summer demands. If necessary, a treatment pilot study will be conducted on water produced by the test well.

Type: Infrastructure Improvement

Total Cost: $300,000.00

Project Status: Project Implementation

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

Estimated Completion: 9/30/2022    Actual Completion:

Associated Counties: Sierra

Project Benefits a Disadvantaged Community (or SDAC): Yes

Contribution SourcesContribution DateContribution Amount
Prop. 1, Water System Infrastructure Improvements - Safe Drinking Water5/1/2017$300,000.00

Project MetricMetric TopicQuantityUnit
Infrastructure ImprovementOther  

Water Action Plan Target

Provide Safe Water for All CommunitiesAction Description


loading loading