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Monterey Peninsula Water Supply Project

(Application A.12-04-019, filed April 23, 2012)


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Welcome to the California Public Utilities Commission (CPUC) website for the Environmental review of the California-American Water Company (CalAm) proposed Monterey Peninsula Water Supply Project (MPWSP or proposed project). An application for this project was submitted to the CPUC on April 23, 2012 (Application A.12-04-019 [pdf 9.46mb]). This website will be used to post all relevant public documents and announcements during the environmental review process. Document and filings not related to the environmental review can be viewed here.

PLEASE NOTE: Other websites, including the previous website: http://www.cwp-eir.com, are no longer associated with the project, and active content posted on those websites is not relevant to the Monterey Peninsula Water Supply Project.


Files linked to this website are in Portable Document Format (PDF). To view them, you will need to download the free Adobe Acrobat Reader if it is not already installed on your PC. Note: For best results in displaying the largest files (see sizes shown in parentheses below for files larger than 3.0 MB), right-click the file's link, click "Save Target As" to download the file to a folder on your hard drive, then browse to that folder and double-click the downloaded file to open it in Acrobat.



In 2004, CalAm filed Application A.04-09-019 seeking a Certificate of Public Convenience and Necessity from the CPUC for the Coastal Water Project. The Coastal Water Project (CWP) was intended to replace existing water supplies for the CalAm Monterey District service area that are constrained by the SWRCB and other legal decisions. In general, the previously proposed CWP involved the production of desalinated water supplies, increased yield from the Seaside Groundwater Basin ASR system, and additional storage and conveyance systems to move the replacement supplies to the existing CalAm distribution system. On January 30, 2009, the CPUC published a Draft Environmental Impact Report (EIR) analyzing the environmental impacts of the CWP proposed project (also referred to as the Moss Landing Project), as well as the environmental impacts of two project alternatives-the North Marina Project and the Regional Project. The CPUC published the Coastal Water Project Final EIR (SCH No. 2006101004) in October 2009 and certified the EIR in December 2009 (Decision D.09-12-017). A year later, in Decision D.10-12-016, the CPUC approved implementation of the Regional Project alternative.

Subsequent to approval of the Regional Project, CalAm withdrew its support for the Regional Project in January 2012 (The CPUC subsequently closed the CWP proceeding in Decision D.12-07-008 [July 12, 2012]). As a result, in April 2012, CalAm submitted Application A.12-04-019 to the CPUC for the Monterey Peninsula Water Supply Project (MPWSP). The MPWSP is intended to secure replacement water supplies for the Monterey District associated with legal decisions affecting existing supplies from both the Carmel River and the Seaside Groundwater Basin.

On April 30, 2015, the CPUC published the MPWSP Draft Environmental Impact Report (DEIR) which started a 60-day public comment period. In a letter dated July 9, 2015, Energy Division extended the public comment period on the DEIR until September 30, 2015. In September 2015, the Commission decided to revise and recirculate the DEIR as a joint state/federal document in coordination with the Monterey Bay National Marine Sanctuary. On March 14, 2016, CalAm submitted an amended application with a revised project description which has been included in the re-circulated draft EIR/Environmental Impact Statement (EIS). The amended application can be found here [9.61 mb].

On January 13, 2017, the CPUC as the CEQA lead agency, and Monterey Bay National Marine Sanctuary (MBNMS) as the NEPA lead agency, published the MPWSP Draft EIR/EIS, which started a 45-day public comment period that was extended by 30-days; the 75-day comment period closed on March 29, 2017. The CPUC and MBNMS published the MPWSP Final EIR/EIS on March 30, 2018. In Decision 18-09-017 on September 13, 2018, the CPUC certified the combined EIR/EIS, approved a modified (6.4 MGD) Project, adopted settlement agreements, and issued a Certificate of Public Convenience and Necessity.


For Additional Information

The CPUC, through its Environmental Review Team, manages environmental review of the project. To request additional information, or to be added to the mailing list, please contact the CPUC's Project Manager:

Project email: mpwsp-eir@esassoc.com
Project fax: (415) 896-0332
Project mailing address:

John Forsythe
California Public Utilities Commission
c/o Environmental Science Associates
550 Kearny Street, Suite 800
San Francisco, CA 94108

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