Hawaii Administrative Rules
Title 4 - DEPARTMENT OF AGRICULTURE
Subtitle 8 - DIVISION OF AGRICULTURAL RESOURCE MANAGEMENT
Chapter 157 - RULES GOVERNING IRRIGATION WATER SERVICE TO CONSUMERS OF HAWAII STATE DEPARTMENT OF AGRICULTURE
Section 4-157-19 - Cross-connections

(a) No cross-connections shall be made without the written consent of the department

(b) The department requires the installation of a mechanical or any other methods or devices on the consumer's side of the meter to prevent backflow on all new services at the sole cost and expense of the consumer.

(c) Whenever the consumer maintains a separate pressure system or separate storage facility, or in any way increases the pressure of the water within the premises above the pressure furnished by the department, or has the equipment, devices, or arrangement of piping, storage, or industrial methods or processes that might, under certain circumstances, raise the pressure of the water within the premises above the pressure of the water in the mains of the department, a backflow prevention device shall be specified and approved by the administrator-chief engineer for installation at the sole cost and expense of the consumer.

(d) As a protection to the consumer's water system, a suitable pressure relief valve shall be installed and maintained at the consumer's expense when backflow devices are installed on the consumer's side of the meter.

(e) Any device installed for the prevention of backflow as may be required under these rules shall, unless the department approves otherwise in writing, be located above ground and in a manner safe from flooding or submergence in water or other liquid, properly protected from external damage, freely accessible, and with adequate working room for inspections, testing, and repairing.

(f) All backflow prevention devices whether mechanical or not, shall be tested and inspected internally not less than once annually. Repairs, replacement of parts, or any other maintenance, shall be made whenever necessary at the expense of the consumer. The annual test and inspection shall be the responsibility of the consumer and shall be made in accordance with methods recommended by the manufacturers and approved by the department. Records of tests and inspections shall be made on formes prescribed by and furnished to the department. Failure of the consumer to properly test and submit the records may, at the option of the department, result in the department making the tests, repairing and replacing any equipment, and charging the cost to the consumer.

(g) Upon request by the department, the consumer shall present an affidavit either certifying to the fact that there are no connections or installations of the type prohibited under this rule on the premises or describing in detail all nonconforming connections or installations.

(h) The several conditions relative to the installation and maintenance of connections referred to in this section shall be subject to change to meet changing requirements of the state and county laws, ordinances, and rules.

(i) Failure on the part of the consumer to comply with the department's requirements relative to cross-connection and backflow protection shall be sufficient reason for discontinuing water service until such time that the department's requirements have been met.