Rainwater Recycling System

Turning a Liability into an Asset and Circulation!

Aqualiq Solutions® rainwater recycling system helps you get LEED V4™ points on your green building project! Many construction companies interested in water harvesting are also considering LEED certification for their project to gain the additional floor area ratio.

Rainwater Recycling Process:

Filtration:
As rainwater comes into the system from the roof or parking area, there is usually one or more stages of filtration before the storage cistern.

Sanitation:
It is usually necessary to sanitize the water to kill algae, parasites or viruses that could enter the storage system from the source or be introduced in storage; many municipalities require sterilization for public safety.

LEED V4™ POINTS FOR WATER CONSERVATION:

Water Efficiency Credits:

  • CREDIT 1: OUTDOOR WATER USE REDUCTION (2 POINTS)
    → Option A:
    No irrigation required. Show that the landscape does not require a permanent irrigation system beyond a maximum two-year establishment period.
    → Option B:
    Reduced irrigation. Reduce the project’s landscape water requirement by at least 30% from the calculated baseline for the site’s peaking watering month.
  • CREDIT 2: INDOOR WATER USE REDUCTION (6 POINTS)
    Earn 1 point for a 25% reduction in indoor water usage, 2 points for a 30% reduction, 3 points for 35%, etc., all the way up to 6 points for a 50% reduction.
  • CREDIT 3: COOLING TOWER WATER USE (2 POINTS)
    → For 2 points:
    Maximum number of cycles achieved without exceeding any filtration levels or affecting operation of condenser water system (up to maximum of 10 cycles).
    → For 3 points:
    Achieve a minimum 10 cycles by increasing the level of treatment in condenser or make-up water, OR achieve the number of cycles for 1 point and use a minimum 20% recycled nonportable water.
  • CREDIT 4: WATER METERING (1 POINT)
    Install permanent water meters for the following water subsystems, as applicable to the project:
    ▸Meter water systems serving at least 80% of the irrigated landscaped area.
    ▸Calculate the percentage of irrigated landscape area served as the total metered irrigated landscape area divided by the total    irrigated landscape area.
    ▸Indoor plumbing fixtures and fittings.
    ▸Meter water systems serving at least 80% of the indoor fixtures and fitting described in WE Prerequisite Indoor Water Use Reduction, either directly or by deducting all other measured water use from the measured total water consumption of the building and grounds.

Sustainable Sites Credits:

  • CREDIT 4: RAINWATER MANAGEMENT (3 POINTS)
    Implement the following strategies to reduce the annual volume of rainwater runoff from the existing site’s baseline condition:
    Use Low Impact Development (LID) practices to capture and treat water from 25% of the impervious surfaces from 1.2” (30 millimeters) of rainfall.
    Rainwater collection system capturing and reusing 25% of the runoff from impervious surfaces.

Integrative Process Credit:

Beginning in pre-design and continuing throughout the design phases, identify and use opportunities to achieve synergies across disciplines and building systems described below. Use the analyses to inform the owner’s project requirements (OPR), basis of design (BOD), design documents, and construction documents. Worth one (1) point.