A water bill is shared between units, tenants, a duplex, accessory dwelling unit, or mixed household spaces.
A shared meter shows combined usage, not one unit usage. The bill may be split by agreement, lease formula, occupancy, square footage, or landlord policy, so leak checks and fairness questions need context.
Check first
Confirm whether the meter serves one unit, multiple units, irrigation, or common areas.
Check lease or agreement language about splits, fixed fees, sewer, and admin charges.
Look for property-wide leaks before blaming one household.
Compare total gallons per day with the number of occupants and units.
Practical savings moves
Run property-wide leak checks when total usage jumps.
Separate shared fixed fees from usage that can be reduced.
Use clear written split rules before conflicts start.
Track meter reads after repairs or schedule changes.
Avoid these mistakes
Do not use a shared meter to prove one unit caused the whole increase.
Do not ignore irrigation or common-area water on the same meter.
Do not split sewer or fixed fees without checking the agreement.