In the new version of Pilot credit Revised at 1/3/2012 they ask to be done one-time potable water analysis. How do we do if our project already covers 100% makeup water with non-potable water?
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
Batya Metalitz
Technical Director, LEEDUSGBC
LEEDuser Expert
318 thumbs up
September 4, 2012 - 3:13 pm
Hi Wagner, that's a good question. If the project isn't using any potable water for cooling tower makeup, then I think the most appropriate thing would be to do an analysis of your non-potable water source for the same purpose - to show that it can be cycled through multiple times without creating build up or performance problems.
Would that work in your case?
WAGNER OLIVEIRA SILVA
CTE45 thumbs up
September 10, 2012 - 9:17 am
Hi Batya, first of all thanks for your reply.
This does not work in our case, since the non-potable water will be generated only when the building comes into operation.
Batya Metalitz
Technical Director, LEEDUSGBC
LEEDuser Expert
318 thumbs up
September 10, 2012 - 9:42 am
Hi Wagner, that would make the credit harder to achieve, but assuming that non-potable water is the only source you're planning to use on the cooling tower, I would assume there is some planning or calculation going into the setup. In that case, the documentation could show 1) how much non-potable water you expect to generate for cooling tower use (and what type, it would need to have low dissolved solids) 2) how you plan to deliver it to the system and 3) how you will meet the dissolved solids and cycles of concentration as outlined in the credit - perhaps filtration/treatment, or perhaps the source is very pure to begin with.