One Angel Place, London

Commercial Greywater Multi Media and Rainwater Recycling system

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This questionnaire allows our engineers to design the most appropriately sized system for your application. Please, complete it as accurately as possible.
Your Details
In order to provide you with a detailed system design, we need some contact information.
Your name*
Position*
Company*
Your email*
Your phone number*

System Designer
The following questions allow you to enter system details, or calculate details from some basic building information to offer you a full system design.
System Type*
Is this a new build or retrofit project?*
Greywater systems are not cost-effective in a retrofit project unless there is major refurbishment that involves separating and rerouting all WHB, shower and bath plumbing from the foul water stack.
Do you know the system size?*
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Grey Water System Size (Litres/Day)
Please enter a number greater than or equal to 1000.
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Rainwater Tank Size (Litres)*
Please enter a number greater than or equal to 1000.

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Main Building Use*
Please select the main building use. If the building is split use just choose the largest proportion.
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Total Floor Area (M2)*
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No. of Bedrooms*
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Estimated Occupancy
This is the calculated occupancy based on the data provided so far, using BS8542. Please, adjust this as needed.
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Roof Area in Sq Metres*
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Is the roof?*
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Average annual rainfall per Sq Metre (mm)*
To ascertain the average annual rainfall for your region please click here, and on the following page, please select, 'Rainfall', 'Annual' and your region from the menu to display the map.
Do you require water for uses other than WC's?*
Rainwater can be used for irrigation and vehicle washing etc.
Building Height (Metres)*
Please, provide an estimated building height for sizing our pump sets.
Specification Link

If you have a full tender document, please link here; wetransfer, dropbox, Gdrive etc.
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Where will the rainwater tank be located?*
Rainwater tanks can be underground, or plant room based sectional tanks. (Grey water tanks are plant room based).
Comments or further details
Please enter any additional details that may be relevant

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Calculations
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Recycled Water Demand Figure (Hotels/Apartments)
The final Demand Figure
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Grey Water Supply Figure (Hotels/Apartments)
Your daily supply figure using BS8525:2011 and BS8542.
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Recycled Water Demand Figure (Offices / Education etc)
The final Demand Figure
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Grey Water Supply Figure (Offices / Education etc)
Your daily supply figure using BS8525:2011 and BS8542.
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Recycled Water Demand Figure (Retail and Retail-like)
The final Demand Figure
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Grey Water Supply Figure (Retail and Retail-like)
Your daily supply figure using BS8525:2011 and BS8542.
(Theoretical) Rainwater Tank Size (Litres)
This the theoretical size before adjusting for supply from your roof area.
(Recommended) Rainwater Tank Size (Litres)
This is the tank size we would recommend based on your inputs and our BS8515 sizing calculations.
(Recommended) Rainwater Tank Size (Litres)
This is the tank size we would recommend based on your inputs and our BS8515 sizing calculations.

NOTE: Your system is combined rain and greywater. The rainwater tank size will be reduced to only provide the required top-up to supplement your grey water supply.
Metrics
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Which describes your business best?*
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