Hawaii Administrative Rules
Title 11 - DEPARTMENT OF HEALTH
Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS
Chapter 21 - CROSS-CONNECTION AND BACKFLOW CONTROL
Section 11-21-5 - Installation and location
Universal Citation: HI Admin Rules 11-21-5
Current through February, 2024
The backflow prevention device shall be installed on the consumer side of the property line and as close to the water meter where applicable as physically possible. Connections or tees between the meter where applicable and the backflow prevention device will not be permitted without approval from the director.
A backflow prevention device shall not be installed underground or in a vault without written approval by the director.
Installation dimension for backflow prevention devices shall conform to the following table:
| SIZE OF DEVICE | DIMENSION GROUND LEVEL TO CENTERLINE OF BACKFLOW PREVENTION DEVICE | DIMENSION DISTANCE TO SURROUNDING OBSTRUCTIONS | |
| Minimum | Maximum | ||
| 3/4" to 1-1/2" | 18" | 48" | 24" |
| 2" to 3" | 24" | 48" | 24" |
| 4" to 6" | 30" | 48" | 24" |
| 8" to 10" | 36" | 48" | 24" |
In all cases, the backflow prevention device shall be installed according to the backflow preventor manufacturer's directions and in an easily accessible location
Disclaimer: These regulations may not be the most recent version. Hawaii may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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