Guide · 3 steps · ~2 min read
Toilets: fix or replace.
The biggest indoor saver in the house.
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Step 1
Fix first
Most running toilets are a flapper problem.
A running toilet is often the #1 silent indoor leak.
Check for leaks -
Step 2
Upgrade when it’s time
Look for the WaterSense label when replacing. [1]
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Step 3
Plan the swap
Run the numbers before you buy so the payback is obvious.
Run the toilet calculator
Lock in the savings with the next step below.
Ask Droplet
Instant plain-English answers about toilet leaks and upgrades — powered by AI.
Educational estimates, not professional advice. Sources linked below.
Related diagnosis guides
Keep one primary page per question. These siblings cover the rest of the high-intent set.
Why is my water bill so high?
National diagnosis: usage vs rates vs sewer vs silent leaks.
Silent toilet leak cost
Dye-test, size the waste, fix the flapper before upgrading.
Sprinkler / irrigation timer spike
Stuck schedules and broken heads before indoor gadgets.
Compare bills month over month
Units per day — not dollars — when the total lies.