The nominal sizing of a water meter means that the current connection stays in place, but availability charges are reduced to reflect a smaller connection. A recommendation is required via a Consulting or Hydraulic Engineers Report as to the connection required in the below circumstances:
If your connection supports a fire service that requires a larger connection say a 150mm service but is only used in emergencies, Shoalhaven Water will Nominal size the availability charge based on the connection size you would require to service the property excluding the fire safety system such as a 32mm service.
For properties where hose reels are connected, a nominal size will only be applicable if the hose reels are protected by lead security seals. The full cost of a service will be charged where seals are broken, not in place, or hoses are used for purposes other than firefighting.
There is a requirement for the applicant to demonstrate compliance with the Building Code of Australia eg. Australian Standards for Hydrants and Hose Reel Codes, NSW Fire Brigade and Plumbing and Drainage Codes.
If it is demonstrated that a property receives low water pressure less than 15 meters of head a nominal charge may be applied to the water account based on the size of the connection required for the property to ensure the correct supply of pressure.
Shoalhaven Water may approve nominal sizing or quantity of connections if unique circumstances exist. Full circumstances and supporting documentation must be submitted to support your application.