All new residential units shall include at least the plumbing specifically designed to encourage the later installation of a system which utilizes solar energy as the primary means of heating domestic potable water. The purpose of this section is to facilitate the safe, cost-effective installation of residential solar water heating systems, while removing structural and regulatory barriers. No building permit shall be issued unless the plumbing required pursuant to this section and the Chula Vista Solar Water Heater Pre-Plumbing Installation Requirements are incorporated into the approved building plans.

Exception: The provisions of this section can be modified or waived when it can be satisfactorily demonstrated in writing to the City Manager, or designee, that potential pre-existing constraints affecting the use of solar hot water heating cannot be reasonably overcome. (Ord. 3145 § 1, 2009; Ord. 3135 § 1, 2009; Ord. 3119 § 1, 2008; Ord. 1973 §  1, 1982).