Los Osos Groundwater Basin Plumbing Retrofit-to-Build Program (Title 19)

The Retrofit-to-Build program (Title 19) requires all new development that uses water from the Los Osos Groundwater Basin to retrofit older plumbing fixtures in existing homes and businesses to save twice the amount of water the new development will use.  Click here for information about the Los Osos Water Offset Study to update these requirements.

What is the process?

Determine amount of water savings needed

  • Single Family Dwelling - 300 gallons per day water savings to offset new water use
  • Multi-Family Dwelling - 225 gallons per day water savings to offset new water use
  • Accessory Dwelling Unit (ADU) - 150 gallons per day water savings to offset new water use

Find qualifying plumbing fixtures to retrofit

Qualifying old and new replacement fixtures include toilets, showerheads, and clothes washers that meet the flow rate requirements specified in the verification form. New fixtures must result in water savings. Effective March 10th, 2014, toilet and showerhead retrofit credits can no longer come from the Prohibition Zone.  Water savings will be calculated as average gallons saved per day based on the existing and retrofitted fixtures. See the Title 19 verification form for the water savings calculation methodology.

Document retrofits and complete the Title 19 Form

Fill out the Title 19 Retrofit Verification Form with information about each retrofitted fixture. Take photos of each old and newly installed fixture and save the receipt(s) for the new fixtures.

Submit Title 19 verification form, photos, and receipts

Email the Title 19 verification form, photos of each old and newly installed fixture, and receipt(s) for the new fixtures to [email protected]. Following submittal, the Department of Planning & Building will review the information and, if approved, provide a Title 19 Water Conservation Certificate.

Who can use this service?

The Title 19 Retrofit-to-Build certificate is required before a new construction permit can be issued for a new structure that will use water from the Los Osos Groundwater Basin. Click here to view an interactive map of the basin boundary.

Is there a charge for this service?

This service is provided free of charge.

When and where is this service offered?

This service is available throughout the year during regular business hours except during scheduled holidays.

Follow Us on Social Media

Let's Get Connected for Our Latest News & Updates

Follow-Us.png