Hmm. So a catchment tank, then even a small pressure tank after, might give a very nice experience. And without power, the catchment tank would still be press

Hmm. So a catchment tank, then even a small pressure tank after, might give a very nice experience. And without power, the catchment tank would still be pressurized by the incoming water supply at 10psi, a nice fallback. Now we only need to obtain the contract. Profit!