Plumbing installation, modification, repair or alteration of a pool, spa or water feature shall conform to the currently adopted plumbing code and the additional following requirements:
A. Water Quality: All water treatment, filtration and recirculation devices, and hydraulic lines and systems shall be approved by the health district prior to permit issue for a public pool or spa. Water features designed for full or partial human submersion open to the public shall be reviewed and approved by the health district prior to permit issuance. Water quality in water features which do not come in contact with the public, and private pools and spas shall be maintained in such a manner that a nuisance is not created pursuant to Nevada Revised Statutes section 40.140.
B. Heating Equipment:
1. Heating equipment shall conform to the provisions of the currently adopted mechanical and electrical codes. Installation of such equipment shall be according to the manufacturer's instructions with special attention paid to the adopted mechanical code sections 302.1, 302.2, 806.6, 806.6.1 and 806.7.
2. Heating equipment shall be located on a three inch (3") poured in place concrete pad. The top of the concrete pad shall be a minimum of three inches (3") above adjacent grade. Alternate locations, such as vaults or pits, are subject to building official approval. Overflow pipe from the pressure relief valve outlet shall be galvanized steel, hard drawn copper piping and fittings, or CPVC and PB (straight) may be used with fittings which will not reduce the bore of the pipe; and shall extend from the valve to outside of any building with the end of the pipe not more than two feet (2') nor less than six inches (6") above the ground and pointing downward. When pool or spa water heating equipment is installed with a full way type shutoff valve between the outlet of the heater and the pool or spa, an approved pressure relief valve shall be installed on the discharge side of the water heating equipment.
3. Pool and spa heaters shall be located to comply with the requirements of the currently adopted mechanical code and shall be accessible for inspection and repair when installed according to the manufacturers's instructions. Vents shall terminate with clearances as follows:
a. A minimum of four feet (4') below, or one foot (1') above, or four feet (4') horizontally, from a door, and openable window or a gravity air inlet into a building.
b. A minimum of three feet (3') above a forced air inlet that is within ten feet (10') of the vent.
c. A minimum of four feet (4') from a property line, except a public way.
C. Water Piping: Swimming pools, spas and water features shall be approved type "L" copper or approved PVC pipe of schedule 40, bearing the NSF PW #14 (national sanitation foundation - potable water) mark or equivalent stamped on each length of pipe. This material shall be used on all water supply, drain, vacuum, and circulating lines. This supersedes authorization in the currently adopted plumbing code to use any otherwise approved materials. PVC pipe shall not be bent using heat unless by thermostatically controlled equipment such that listing is retained. All plastic pipe exposed to sunlight must be protected with an approved tape wrapping or latex paint.
D. Gas Piping: Natural gas piping systems shall conform to the provisions of the currently adopted plumbing code. Liquefied petroleum gas piping systems shall conform to the provisions of the national fuel gas code, NFPA 54.
E. Water Supply:
1. Pools, spas and water features shall have water directly supplied through a water supply inlet.
2. The water supply inlet shall be protected by a one inch (1") air gap or approved backflow protection device.
Exceptions: Private pools and spas may be provided with a water supply consisting of an approved backflow protection device (vacuum breaker) located on the discharge side of the last valve or a sill cock (hose bib) from which a water hose may be attached.
F. Wastewater: Wastewater from pools, spas and water features shall be discharged to the public sewer through a permanently installed waste line. Wastewater shall not be discharged to a septic tank.
Exceptions:
1. If a public sewer service is not available, the building official may authorize the wastewater to be discharged above ground and used for irrigation purposes. The wastewater shall not be allowed to drain to adjacent properties or the public way. This authorization may be revoked if a hazardous, nuisance or unsanitary condition occurs.
2. For private pools, spas and water features, a hose connection may be used as a waste line when the building official has deemed the installation of a permanent waste line as impractical.
The permanently installed waste line shall discharge through an indirect waste connection of the following type: an approved interceptor; a sand trap which is vented and provided with a cleanout on the discharge side; or a "P" trap of a minimum size of three inches (3").
G. Entrapment Avoidance: The suction outlet for pool and spa cleaning systems shall be protected against user entrapment. A minimum of two (2) suction outlets shall be provided for each pump in the suction outlet system, separated by a minimum of three feet (3') or located on two (2) different planes, on the bottom and one on a vertical wall, or one each on two (2) separate walls. The suction outlets shall be plumbed so water is drawn simultaneously through the outlets to a common line to the pump.
H. Filtering And Recirculation: Pools, spas and water features shall be equipped with a filtering and recirculation system consisting of circulation pumps and piping arranged for optimum circulation of the water within the unit. Equipment shall be mounted on a three inch (3") poured in place concrete pad. The top of pad shall be a minimum of three inches (3") above adjacent grade. All equipment shall be listed by a recognized testing agency for the appropriate use. The circulation system shall provide a complete turnover of water within the time frame specified below:
Public pool 6 hours
Private pool 12 hours
Public spa 1/2 hour
Private spa 1 hour
Water feature 8 hours
Scum gutters and skimmers in public pools, spas and water features shall conform to the requirements of the health district. Inlets for fresh or repurified water in all pools, spas, and water features shall be located to produce uniform circulation of water throughout the entire pool, spa, or water feature, without the existence of "dead" spots.
I. Over Sewer: Swimming pools, in ground spas or water features shall not be constructed over sewer lines unless the sewer line is of cast iron material and prior approval from the building official is obtained. (Ord. 188, 7-8-1997)