Sustainable wastewater management

Dear Maki,

We reuse rainwater for flushing in one of our project, and they accepted Sustainable wastewater management innovation credit also. Im trying to do it on two other projects, i will got news in coming weeks for one of this project (already get exemplary performance for Indoor water use credit).

Did you get some information from your side ?

Best regards,

Does this means that if we have 50% reduction under WE indoor water use reduction we can also achieve this credit under Innovation, following Option1 ?

Hi Catarina,

If your project's flush fixtures (toilets and urinals only) show 50% or more water savings, then you are eligible for this strategy as an Innovation credit. It does not apply to your overall water savings from the Water Use Reduction Credit that also includes lavatories, kitchen faucets, and showers.

Yep, you can definitely use your rainwater reuse for both the Water Efficiency (WE) credit and snag an Innovation credit for it, according to the LEED guidelines. As long as you're hitting the requirements, it's a clever way to rack up more LEED points and highlight your project's green efforts. Just make sure your paperwork is clear on how cool and innovative your water-saving strategy is to grab that extra point. Great thinking on doubling up the benefits!

Yes, you can still use the Sustainable Wastewater Management Innovation Credit for your project even if you are already earning points under the WE credit Indoor Water Use Reduction.

Using recycled water, such as reclaimed rainwater for flushing water closets and urinals, not only helps you gain points under the Indoor Water Use Reduction credit but also contributes to sustainable wastewater management. This aligns with the objectives of the LEED BD+C: New Construction v4 certification.

Since the innovation credit rewards the use of recycled water, it complements your project's sustainability goals and can help you earn additional points. Therefore, you can pursue the innovation credit alongside other credits you are already targeting, including the WE credit Indoor Water Use Reduction.

Can reclaimed (purple pipe) water for toilet flushing be factored into Indoor Water Efficiency credit?
In my region, Sonoran desert, re-using treated storm & sewer water is essential and the infrastructure is extensive. I've searched throughout this site and the reference manual for the past year but never found any guidance. Thanks in advance!

Yes, reclaimed water can contribute to the Indoor Water Use Reduction credit as an alternative water source.  From the LEED Reference Manual requirements: Further reduce fixture and fitting water use from the calculated baseline in WE Prerequisite Indoor Water Use Reduction. Additional potable water savings can be earned above the prerequisite level using alternative water sources. Include fixtures and fittings necessary to meet the needs of the occupants.