Water utilities Division

Helpful Information

Sewer Financial Plan Rate Studies:

Sanitation Districts

The City of Vista Engineering staff represent both the City of Vista Sanitation District and the Buena Sanitation District, a County sanitationdistrict. Each sewer collection District is a distinct legal entity and both convey sewage for treatment at the Encina Wastewater Authority (EWA).

The Vista system consists of approximately 229 miles of public pipelines and one pump station, serving approximately 16,000 parcels, and conveys an annual average flow of 6.53 million gallons per day. The Cities of Vista and Carlsbad share ownership of the outfall interceptor sewer, which routes sewage approximately 7.5 miles through two pump stations and force mains to the Encina Wastewater Authority (EWA) treatment facility. The Buena system consists of approximately 106 miles of public mains and trunk sewers, serving approximately 5,360 parcels, and conveys an annual average flow of 2.04 million gallons per day. The Buena Outfall routes sewage approximately 5.5 miles through one pump station to the EWA treatment facility.

The Buena Sanitation District also owns the Shadowridge Water Reclamation Facility (SWRF), which operated from 1980 to 2003. This facility was state of the art at its time and was necessary to provide enough treatment capacity to serve the Shadowridge development. EWA upgrades have replaced the necessary treatment capacity and the plant is currently in a non-operational mode. It may be reactivated with certain upgrades, as it becomes necessary or convenient to serve District customers.

Staff manages interagency agreements with EWA, Vallecitos Water District, and the Cities of Oceanside, Carlsbad, and San Marcos, that allow the agencies to put their collective infrastructure to the most efficient use in conveying and treating the area’s wastewater, while providing a higher level of safety against spills to the environment.

The Water Utilitiesdepartment provides private development review services, sewer permit processing, investigations, Capital Improvement Program (CIP) Project management, implementation of new regulations, and other associated services.

Regional Standards:

Federal, State, and local regulations govern sewer collection and disposal. Below is helpful information. Other regulations may apply to your project. For more information, contact Engineering at (760) 639-6111.