Water-saving upgrades worth making
Which fixture changes actually reduce a water bill, how to detect silent leaks, and what to check before buying anything.
Last reviewed 2026-07-15 · About 6 min read
Water savings come from two very different places: eliminating waste you did not know about, and reducing flow you use deliberately. The first is nearly always the bigger number.
Find the silent waste
A leaking toilet flapper can pass thousands of gallons without any sound. Test by adding a few drops of food colouring to the tank and checking the bowl twenty minutes later without flushing.
Read your meter with everything off. Movement means a leak somewhere on your side of the meter.
Change the fixtures you use most
Aerators are the cheapest meaningful upgrade in the house and take minutes. Showerheads are next, and modern low-flow designs no longer feel weak if you choose a quality unit.
Check thread size and existing pressure before buying; very low static pressure changes what will feel acceptable.
Consider hot water separately
Every gallon of hot water saved also saves the energy used to heat it, which is why shower and faucet changes usually pay back faster than the water rate alone suggests.
When to call a professional
- The meter shows continuous flow you cannot locate
- There is evidence of a slab leak, such as warm flooring or unexplained damp
- Supply piping is corroded, or you find polybutylene or failing connections
Source notes
- Flow rates