I'm hoping a plumber will pipe in here and set me right.
I'm planning a pool/spa equipment relocation as part of a renewal of dying equipment thats >20 years old.
Currently, all pool/spa pipes come up from underground near the spa, and then are connected to the various equipment - see diagram. There are actually 3 pipes for the pool - one is the backwash connection to the sewer (I believe its sewer as dont think it can be stormwater - havent checked, but assumed as has been there forever).
Instead of it turning right, I'm planning on slightly extending them before turning them all left, and running approx 11m on flat ground, underneath an existing structure (decking mainly - but have got a clear run to lay pipe ontop of the soil with two minor cutouts to run the pipes through (non-structural). Plan would be to lay pipe and then partially cover/fill it in so there can be little/no movement once they are there. 11m there, 11m back. Plan is to do it using the existing pump to see if its sufficient for the extra distance, otherwise will upgrade the pumps too.
Questions for the plumbers:
Legally, can I do the water pipes myself, or must they be done by a licenced plumber, given I will be connecting to existing sewer connection? I have had a shot at some minor repairs to the existing system, which have cemented and held up without issue - so I feel competent to do so.
If the sewer connection is the problem preventing me doing it myself, can I plumb the water myself if I remove the sewer connection and run a cartridge filter for the pool? I have a submersible pump to lower the pool water level as required - and would drain it into a sewer point as required to do so.
If I still cant do it myself legally, can a plumber tap into the sewer line with a new connection close to where the new equipment space is? The sewer line runs right past there - would be simple to do and that way I can be sure its connected to the sewer and not stormwater (cant tell where it is now).
Can the gas line run along the ground, in close proximity to the water pipes? At the moment, it pops up and has about 30cm of pipe above ground to connect to the existing heater. Plan would be to put a plumbed in BBQ where the heater was, and run another line off that pipe to where the spa heater will be relocated to 11m away.
Digging a trench underneath the deck will be near impossible without it becoming a HUGE job (totally removing spa to get access to bury the first 2m of pipe, which will be a huge job and make it pretty much not feasible).
For the record, I wont be doing any gas work myself - only the water.
Cheers
Are you sure backwash goes to sewer?