Any properly identified officer or employee of the department shall have the right of ingress to and egress from the consumer's premises at any reasonable hour, and at any hour during an emergency, for any purpose reasonably connected to the protection of the public drinking water system and furnishing of water to said premises and the exercise of all rights secured to it by law or this subchapter. If the officer or employee is prevented from carrying out the duties, the department may shut off water service to said premises five business days after written notice is given to the consumer.
Haw. Code R. § 10-4.1-17