Considering our options regarding a recently discovered leak in loop piping. Loop has interior manifold set up, and leak is between through wall hdpe piping from vertical well and pvc schedule 40 (glued fittings) ball valve. Thus unable to shut off, isolate and repair....easily. (All interior piping is schedule 40 pvc with glued joints....thus adding degree of repair difficulty) It is a pressurized closed loop system, with make up water connection to potable water supply. The glycol water mixture has not been tested since it was put into service, 13 years ago. Looking for suggestions as to the best way to proceed. So far I have come up with 3 options: 1. Do nothing. Allow leak to continue to drip, with make up water continuing to be added. (Not really a viable option...but it is an option) 2. Pick a spot to cut out glued manifold and valves, replumb, have system flushed, purged and pressurized and put back into service. (Current pump set up seems poorly designed with push/pull loop pumping arrangement ) 3. Replumb all interior piping from hdpe loop pipes to heat pump, adding a non pressurized flow center. Having scratched my head on this for a week or so, curious to see if there are any other potential options not yet considered, and others opinions on presented options.