5 taps on an 20mm MDPE pipe?

[AWheating]

2 taps off main then yes, all taps off cistern piped with correct air gap then no.

 

[ecowarm]

2 taps off main then yes, all taps off cistern piped with correct air gap then no.

I did some work on local farms with the water board inspector recently to get them up to standard and as long as a stand pipe was not connected to a hose it did not need a double check valve

 

[AWheating]

the use of hoses/sprinkler has been mentioned.