City of San Diego Receives High Grades for Sewer Revenue Bonds

San Diego, Calif. – Two credit ratings agencies have given the City of San Diego’s sewer revenue bonds high grades, a positive sign as the City moves forward on making important upgrades and rehabilitating its sewer system infrastructure.


Fitch Ratings and S&P Global Ratings have both assigned ‘AA’ ratings to approximately $158 million subordinate sewer revenue bonds, issued by the City’s Public Facilities Financing Authority. 

KBRA Releases Report Assigning AA+ and Stable Outlook to Public Facilities Financing Authority of the City of San Diego Senior Water Revenue Bonds Series 2020 A&B

On April 20, 2022, Kroll Bond Rating Agency assigned a long-term rating of AA+ and Stable Outlook to the Public Facilities Financing Authority of the City of San Diego Senior Water Revenue Bonds Series 2020A (Tax-Exempt) and Series 2020B (Federally Taxable).

San Diego regional water quality regulators issued a new permit for the development of permanent, stand-alone seawater intake and discharge facilities at the Carlsbad Desalination Plant. Photo: Water Authority

Fitch Boosts Desalination Plant Bond Rating

Bonds from the Carlsbad Desalination Plant and pipeline were upgraded to BBB and given a stable outlook in a new report from Fitch Ratings, affirming the project’s sound management and its ability to provide a stable, reliable source of drinking water to the San Diego region.

As the largest, most technologically advanced and energy-efficient plant of its kind in the nation, the Claude “Bud” Lewis Carlsbad Desalination Plant’s stability stems from an effective collaboration between Poseidon Water and the San Diego County Water Authority.

That partnership will continue under a transfer of ownership from Orion Water Partners to Aberdeen Standard Investments approved Thursday by the Water Authority’s Board of Directors. The transfer – made public in June – will not alter day-to-day operations at the Carlsbad facility or create a fiscal impact to the Water Authority.

Poseidon Water continues to manage desalination facility

The plant will remain governed by terms of the 2012 Water Purchase Agreement between Poseidon Water and the Water Authority. That 30-year agreement requires Poseidon to obtain the Water Authority’s written consent of the transaction and to reimburse the Water Authority for its costs related to consideration of the consent request. Under the WPA, the Water Authority agreed to purchase between 48,000 acre-feet and 56,000 acre-feet of water from the desalination plant each year at a price established by the contract.  At the end of the 30-year term the Water Authority can assume facility ownership for $1.

“We are honored that maintaining Poseidon Water as the facility manager was integral to the Water Authority’s approval of the ownership transfer and by the Water Authority’s acknowledgement of our exemplary stewardship of this valuable resource,” said Carlos Riva, CEO of Poseidon Water. “We look forward to working alongside our new partners to continue providing the San Diego region with a climate-resilient drinking water supply and ensuring the plant continues its strong operations.”

Desalination plant is ‘hedge against drought’

Water Authority Board Chair Jim Madaffer said the desalination plant is a valuable asset that provides high-quality water, a hedge against drought and insurance against earthquakes that could disrupt imported water deliveries. “With more than 50 billion gallons of water produced and counting, the Carlsbad plant is a critical part of our region’s infrastructure – and we don’t expect the sale to change that in any way,” he said. “In fact, we anticipate many more years of productive partnering with Poseidon.”

The Carlsbad Desalination Plant has met approximately 10% of the San Diego region’s water needs. The planned construction of new, technologically advanced and environmentally sensitive intake and discharge facilities will further enhance operations.

Higher ratings expected to save ratepayers money

Plant partners also praised the improved ratings for the desal plant and the associated pipeline by Fitch Ratings, which upgraded bonds from BBB- to BBB based on the plant’s strong operational record, updated financing projections for capital improvements, and Fitch’s expectation that the positive trend in financial and operational performance will continue.

Also this week, Moody’s affirmed its Baa3 rating for the plant and pipeline bonds. When those bonds are refinanced, higher ratings are expected to save ratepayers money by lowering the interest rate paid on the debt.

Since its inception as a public-private partnership, the Carlsbad facility has received numerous national and international awards.

The P3 approach allowed the Water Authority to develop new, capital-intensive, public-serving infrastructure without incurring debt or negatively affecting bond ratings, a fact recognized in 2016 when S&P raised the Water Authority’s credit rating to AAA citing, in part, the successful delivery of the Carlsbad facility.