Denver, CO
Replacing a toilet in Denver: the Denver Water rebate
Updated · Editorial team; not yet technically reviewed
Short answer
Denver Water offers up to $100 back for a new WaterSense toilet that uses an average of 0.8 gallon per flush or less, an ultra-high-efficiency standard stricter than typical 1.28-gallon models. You can claim up to two per residence in 10 years, the toilet must be new (not for new construction), and you must apply within 90 days of purchase.
What's different in Denver
Denver Water offers up to a $100 rebate for a WaterSense toilet that uses an average of 0.8 gallon per flush or less. [1]
There's a limit of two toilet rebates per residence in a 10-year period. [1]
Only new fixtures qualify; used, refurbished or insurance-replacement fixtures and new construction don't, and applications are due within 90 days of purchase. [1]
0.8 gallon is stricter than most toilets
Most efficient toilets sold are 1.28 gallons per flush. Denver Water's rebate targets ultra-high-efficiency models at 0.8 gallon or less, so check the flush rating before buying if you want the rebate.
Getting the rebate
Pick a qualifying model
WaterSense label, 0.8 gpf average or less.
Keep the receipt
Apply within 90 days, no exceptions.
Install it
See toilet installation.
Older Denver homes
Pre-war bungalows may have cast iron closet bends and lead or brass flanges that need attention when the toilet comes up; see Denver lead service lines for the service line side.
What Denver homeowners usually check next
- SymptomToilet keeps running
Common questions
Why does Denver Water set a 0.8-gallon limit?
The rebate targets ultra-high-efficiency toilets that save more than standard 1.28-gallon models.
Which toilets qualify for Denver Water's rebate?
New WaterSense toilets averaging 0.8 gallon per flush or less.
How many toilet rebates can a Denver home get?
Two per residence in a 10-year period.
How long do I have to apply for the Denver toilet rebate?
90 days from purchase, with no exceptions.
Does new construction qualify for the Denver toilet rebate?
No.
Do refurbished toilets qualify?
No; only new fixtures qualify.
Is a 1.28-gallon toilet eligible in Denver?
Not for this rebate, which requires 0.8 gallon per flush or less on average.
Do toilets from an insurance claim qualify?
No; equipment from warranty or insurance claims is excluded.
Will an ultra-high-efficiency toilet clog more?
Well-rated models flush effectively; check independent flush performance ratings.
What should I check when replacing a toilet in an old Denver house?
The closet flange and drain bend, which may be old cast iron.
More plumbing help in Denver
- Water Line Repair in DenverHow Denver Water replaces customer-owned lead service lines with copper at no direct cost, which homes are most likely affected, and what to do while you wait.
- Backflow Testing in DenverDenver Water's backflow rules: annual testing, the May–September irrigation testing season, required device types, 30-day reminders, and where results go.
- Leak Detection in DenverDenver Water customers own the service line and meter pit, Denver Water isn't liable for damage from them, and how leak detection finds a break before you dig.
- Toilet Installation: the full guideWhat to check before buying a new toilet (rough-in, bowl shape, height, flush rating) and what a proper toilet installation includes.
- Plumbing in DenverLocal water, housing and climate conditions, and the calls Denver homes need most.
How other cities handle it
- Toilet replacement and rebates in Los AngelesReplacing a toilet in Los Angeles: LADWP's premium high-efficiency toilet rebate, how to apply, and the California rules on toilet flush volume and older homes.
- Toilet replacement and SAWS rebates in San AntonioSAWS toilet rebates in San Antonio: the current high-efficiency toilet rebate, which toilets qualify, SAWS's history of free toilet programs, and installation tips.
- Toilet replacement and rebates in MiamiMiami-Dade Water and Sewer toilet rebates: the pre-1996 home rule, senior homeowner rebate amounts, WaterSense-only models, inspections, and multifamily limits.
- Toilet replacement and rebates in AlbuquerqueABCWUA rebates in Albuquerque: $200 for replacing high-flow toilets, $50 for upgrading 1.6 gpf models.
- Toilet replacement and rebates in TucsonTucson Water's toilet rebate: $100 per MaP Premium toilet for pre-2011 homes, flush-volume rules, and the gray water rebate that pairs with it.
- Replacing a toilet in Seattle: rebates and free toiletsSeattle toilet replacement: the Saving Water Partnership's $100 rebate for replacing pre-2004 toilets, free toilets for income-qualified homeowners.
- Dallas toilet replacement: free toilets and rebatesDallas Water Utilities' New Throne for Your Home: up to two free high-efficiency toilets or $90 rebates for replacing pre-1994 toilets. Check current status.
Sources (1)
- Denver Water, Toilet rebates · checked 2026-10-03