Water Balance Optimiser

Autofill by location (open data)

Select a location to auto-fill rainfall, area and population from open data. Post-4R consumption and recharge efficiency stay manual.

4R Based Simulation Tool

Model how demand reduction and improved recharge move a site from deficit toward water positivity.

Live Scenario

Use this visual as the 4R reference: reduce demand, reuse water, recycle treated water, and recharge through rainwater harvesting.

Lower per-person consumption through efficiency and leak control.

Shift suitable non-potable demand to greywater and treated water.

Recover process or STP water for repeated use on the premises.

Improve rainwater capture, infiltration, and groundwater recharge.

Rainfall + Area Potential supply

4R Levers Reduce demand, increase credit

Water Balance Deficit or positive status

Existing vs Post 4R Inputs and Water Balance

Parameter	Existing	Post 4R	Unit	Purpose
Rainfall			mm/yr	Annual average rainfall
Area			Sq Km	Premises / catchment area
Population			Person	Dependent population
Water consumption			LPD	Reduce litres/person/day
Recharge efficiency			%	Harvesting / recharge efficiency
Rainwater Harvested	0	0	Litres pp/yr	Harvested per person per year
Water Consumed	0	0	Litres pp/yr	Consumed per person per year
Water Balance	0	0	Litres pp/yr	Red = deficit, green = surplus
Status	-	-		Water positive when harvested is higher than consumed

Scenario Snapshot

Existing Balance0Litres pp/yr

Post 4R Balance0Litres pp/yr

Balance Improvement0Litres pp/yr

Post 4R Ratio0%Harvested / consumed

Existing harvested0

Existing consumed0

Post 4R harvested0

Post 4R consumed0

4R Intervention Guidance

Lower LPD through efficient fixtures, leak control, metering, and behaviour change.

Use greywater or treated water for flushing, gardening, washing, and non-potable demand.

Recycle STP or process water to offset freshwater consumption wherever quality permits.

Improve recharge efficiency with rainwater harvesting, recharge pits, trenches, and wells.