Whenever a business transaction of a municipal utility district furnishing electricity, gas, water service where the utility has 10,000 or more service connections, or telephone service is such that a personal appearance by a person is required by the district and the person is unable to appear at the district's place of business during the district's usual business hours, then the district shall provide a reasonable and convenient alternative to the person such as an appointment outside the district's usual business hours or allowing the person to conduct the transaction by telephone, mail, or both.
Ca. Pub. Util. Code § 12819.5