High-Efficiency Toilet Residential Rebate Program

City of Modesto water customers in single and multi-family homes built before 1992 may be eligible for a rebate when they replace their old toilet with a high efficiency toilet.  The rebate amount may not exceed $100 per toilet replaced. Funding is limited and applications will be accepted on a first come, first served basis. The City reserves the right to terminate this program at any time and for any reason.

Replacing a high water use toilet with a new High Efficiency Toilet (HET) of 1.28 gallon per flush (gpf) can save about 38 gallons of water each day. An HET uses 20% less water per flush than Ultra Low Flush Toilet (ULFT) models. Efficiency measures such as replacing water guzzling toilets with the latest in low-flush toilet technology helps ensure the future water supply is adequate and helps maintain efficient water use.

How to Apply

  1. Obtain an application using one of the following methods:
    1. Apply Online
    2. Request by Email
    3. Call the Water Division 209-342-2246
  2. If you are not applying online, send completed paper application and the original sales receipt to one of the following:
    1. Mail:
       City of Modesto Attention:Water Division - Rebate Program
      PO Box 642
      Modesto CA 95353 
    2. Fax: 209-342-4568
    3. Email

A City of Modesto representative may contact you to schedule a brief appointment to verify installation of the new High Efficiency Toilet.

Program Guidelines and Participation Section

Who Qualifies?

  • City of Modesto customers who pay a water utility bill to the City of Modesto
  • Customer accounts that are in good standing
  • Tenants who provide written approval from the property owner or property manager.
  • Homes built before 1992.


  • Program applies to toilet(s) purchased between July 1, 2021 through June 30, 2022.
  • Rebate application must be submitted within 60 days of sales receipt.
  • The qualifying toilet must remain at the installation site for a minimum of six months after installation.

Toilets (qualifying for rebate)

  • New toilet(s) must be rated as 1.28 gallons per flush (gpf) or less and must bear the WaterSense label.
  • For a list of qualifying toilets visit https://epa.gov/watersense/products/toilets.html or call 209-342-2246.
  • Toilet(s) being replaced must exceed 1.6 gpf and be manufactured before 1992.
  • HET toilets must be installed within the Modesto City service area and at the address listed on the application.


  • Toilet installation, new construction, accessories, and taxes do not qualify.
  • If the existing toilet is 1.6 gallons or less per flush, they do not qualify for this rebate.
  • Rebate checks will be mailed within 8 weeks after completing the rebate process.
  • Rebate amount cannot exceed the purchase price of a new toilet(s).
  • Rebates are limited to the number of bathrooms listed on the County parcel record.

Application and Rebate Approval or Denial

  • On-site compliance verification may be required.
  • The original itemized dated sales receipt for the new toilet is required (copies not accepted). Scanned original will be accepted via online submittal only.
  • Incomplete, incorrect or unsigned applications cannot be processed. We will contact you with any discrepancies and many require you to submit a new application.
  • Customer must fulfill all program guidelines in order to be eligible for rebates.
  • The rebate application must be submitted within 60 days of sales receipt.

Other Considerations

  • The Rebate Program is not responsible for materials lost by mail.
  • Submissions or possession of a rebate application does not guarantee receiving a rebate application does not guarantee receiving a rebate.
  • Rebates are processed on a first come, first served basis.
  • Funding for this rebate program is limited to available resources.
  • Rebate amounts are subject to change without notification.
  • This program shall at all times be subject to change or termination without prior notice.
  • Toilets that are leased, rebuilt, rented, received from warranty or insurance claims, exchanged, won as a prize, or have had new parts installed in an existing unit do not qualify for a rebate.