How to use this: Pick a scenario button at the top to get started. Then slide the controls and choose the fixtures in the cards below to match your family’s home. Everything updates right away. Your goal is to keep indoor use under 47 gallons per person per day (it drops to 42 in 2030). Check the tall bar to see what uses the most water, and look at the drought box to see if your home would pass a 20% cutback. Can you find a water bill at home? Type it in under Household to test against your family’s real numbers. When you’re done, copy the link at the bottom to save your work or share it with your class.
Your indoor gallons per person per day (blue) against the state indoor standard, which steps down from 55 to 47 to 42.
Household gallons per day, typical home in your region vs. your scenario.
Move any lever. Each change is ranked here by the gallons per day it saves for the whole household.
The link below encodes every slider. Anyone who opens it sees exactly this scenario.
Interaction pattern inspired by En-ROADS, created by Climate Interactive and MIT Sloan. Companion to the Household Carbon Simulator. Independent model, not affiliated with any utility.
Everything runs in your browser. Indoor use is built fixture by fixture; outdoor use follows California’s landscape-ordinance water budget; energy and carbon follow the water from the source, through your water heater, to the sewer plant.