High-Efficiency Toilet Residential Rebate Program

Effective July 1, 2018

City of Modesto water customers in single and multi-family homes may be eligible for a rebate when they replace their old high water use toilets. 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.

Customers are eligible for a $50 rebate with the purchase of qualifying High Efficiency Toilets (HET) of 1.28 gallons per flush or less. The rebate amount may not exceed $150 per City of Modesto water account.

Replacing a high water use toilet with a new High Efficiency Toilet (HET) of 1.28 gallons per foot (gpf) can save about 38 gallons of water each day. An High Efficiency Toilet (HET) uses 20% less water per flush than 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 low water rates.

How to Apply

  1. ​Obtain an application using one of the following methods:
    1. Apply Online
    2. Download Toilet Rebate Application (PDF)
    3. Request by Email
    4. 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: 209-577-4983
    3. ​Email
A City of Modesto representative may contact you to schedule a brief appointment to verify your old toilet(s) flush capacity and your 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.
  • Customers with homes built before 1992.


  • Program applies to toilet(s) purchased between July 1, 2018 through June 30, 2019.
  • 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 date.

Toilets (qualifying for rebate)

  • New toilet(s) must be rated as 1.28 gpf or less and must bear the Water Sense label.
  • Dual Flush Toilets may qualify.
  • View List of qualifying toilets online or call 209-342-2246 for more information.
  • Toilet(s) being replaced must exceed 1.6 gpf and be manufactured before 1992.
  • High Efficiency Toilet(s) (HET) must be installed within the Modesto City service area and at the location on application.


  •  If the existing toilet(s) are already 1.6 gallons or less per flush, they will not qualify for this rebate program. 
  • Toilet installation costs, new construction, accessories, and taxes do not qualify. 
  • Rebate checks will be mailed within 8 weeks after completing the rebate process. 
  • Rebate amount cannot exceed the purchase price of a new toilet. 
  • Rebates are limited to three per utility billing account including PUD's and Home Owner Association’s, mobile homes, condos/townhouse, and multi-family residential or any other shared billing account. 

Application and Rebate Approval or Denial

  • On-site compliance verification may be required. 
  • The original itemized dated sales receipt for the new toilet(s) 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 may 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. 
  • Submission or possession of 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. 
  • Learn more about water conservation and this rebate by visiting the H2ouse website.