We are having some trouble coming up with the calculation for rainwater stored and reused annually.

Hi all, We are planning to run some onsite tests to determine how water efficient are our showerheads.

When we sent the WE credit for review for our project, we sent a water use calculation stating that the potable water usage in the project has been reduced by 43% from a calculated baseline design.

Hi, we are evaluating a dual flush valve for WC, which give us 6 & 9 Litres per flush(adjustable) which aggregates to 7 litres per flush, our project requirement is 3.023 Litres per flush(0.8

We are working on a college dormitory and trying to calculate the daily uses for kitchen sinks. The only kitchen is on the first floor of the dorm and not in each dorm room.

Design/Baseline

I have a project that is pursuing WEc2 via Option 2 treating wastewater to tertiary standards and infiltrating onsite through landscape irrigation. Can this factor into water saving for WEc3??

Is there a calculator tool or methodology that we should use when submitting our annual rainwater collection (kGal) calculations for LEED? Our calculations are currently based on BS 8525 Rainwater

We have an adjacent property (with the same owner) that has to remove non potable water from its foundation. This groundwater flows in a large part from our property.

Regarding a residential kitchen sink that has a faucet and a spray nozzle, would the spray nozzle be measured against the baseline flow rate of a kitchen faucet or a pre-rinse spray valve?