City project
Secondary Treatment Upgrades project
Secondary Treatment Upgrades project.
- Current status
- In construction; approaching year two of a five-year construction period.
- Location
- Palo Alto wastewater treatment plant, Palo Alto, CA
August 19, 2026: Capital-program update
The City reported a $397 million investment. The plant continues to treat 20 million gallons of sewage per day while upgrades proceed.
Read related coverageJune 8, 2026 funding-eligibility update
Staff said maintaining a current Urban Water Management Plan is important to continued eligibility for state grants and loans supporting the upgrades.
Read related coverageMay 6, 2026 funding eligibility update
Staff said maintaining a current Urban Water Management Plan is necessary to protect eligibility for State Revolving Fund loans, including the approved low-interest loan for the upgrades.
Read related coverageMarch 4, 2026 update
Staff reported a total project cost of $192 million and stated that debt repayment on its State Revolving Fund loan, at 0.8%, will begin after project completion in 2029.
Read related coverageFY26-Q1 quarterly report update
The FY26-Q1 quarterly report listed $193 million for the project.
Read related coverageMarch 5, 2025 update
Staff reported that the upgrade is debt-financed at 0.8% through an SRF loan and is intended to put the facility ahead of future nutrient-reduction requirements.
Read related coverageDecember 4, 2024 funding and construction update
Staff reported a $193 million project supported by low-interest State Revolving Fund financing; its costs are incorporated in wastewater rates.
Read related coverage
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