When you're proposing development (single-family residence, accessory dwelling unit, commercial building) you will be required to submit a Water System Evaluation application.
Some development applications are exempt from a Water System Evaluation.
- Repairs of existing buildings that will not increase the use of an existing water supply;
- Remodel or replacement of existing, nonresidential buildings when the new work will not increase the use of an existing water supply; and
- Remodel or replacement of existing residential buildings that do not:
- Increase the number of bedrooms; or
- Add more than five hundred (500) square feet of gross floor area.
SCC 12.48.040 (3) “PDS shall not issue any building permit for a structure with plumbing, or land division approvals until the Health Officer has approved the water system.”

