The flush volume of a toilet simply means how much water is released when it is flushed. You need to determine the toilet's flush volume as explained below.
Manufacture Date of Old Toilet
Pre-1950's to 1980
1994 to present
1994 to present
This Many Liters Per Flush
18.92 to 26.49
6.05 (does not qualify)
4.84 (does not qualify)
Equals This Many Gallons Per Flush
5 to 7
Here are two ways to determine an old toilet's gallons per flush (gpf):
A marking or label is typically located near the toilet seat hinge on the bowl that can provide you with that information. Please note that the markings and labels are often in liters as opposed to gallons. See the above table for a quick reference to help determine the toilet's flush volume if it is listed in liters or has the manufacturing date labeled. If you cannot locate any markings or labels near the seat hinge, check the underside of the tank lid or the tank's back inside wall for a date and information stamped in the porcelain.
Then proceed with the following activity.You will need: Pencil and an empty 1-gallon milk jug.
Turn off the water supply behind the toilet by turning the valve clockwise until tight. Remove the tank lid from the toilet and set it aside. If there is a water saving device inserted in the toilet tank, remove it before proceeding.
Mark the water level inside both the toilet tank and toilet bowl with a pencil line.
Flush the toilet and wait until both the tank and bowl are full.
Measure TANK gallons: Fill an empty 1-gallon empty milk jug with water, and pour the water into the tank until you reach the pencil line. Refill the container as needed, and keep track of how much many jugs (or portions of jugs) of water it took to fill the tank to the pencil line. If the last jug in the refill process is less than full when the line is reached, make a reasonable estimate of how empty that jug is and record that amount. (For example, if the jug appears to be three-quarters full when the line is reached, one quarter of a jug was used in bringing the tank up to the pencil line. Record the number of gallons/jugs it took to reach the line, plus one-fourth of a gallon)
Measure BOWL gallons: Fill the toilet bowl until the water reaches the pencil line, and keep track of how many jugs (or portions of jugs) of water it took to fill the bowl. Follow the above advice about recording the amount of a partial jug that's used in bringing the bowl up to the pencil line.
Add together the number of jugs and portions of jugs it took to fill the tank and the bowl together to determine your toilet's gpf rate. One jug will equal one gallon.
Replace the water tank lid, and turn the water supply on by twisting the valve counter-clockwise.
Rebate status can be seen in the online application dashboard portal. You may also inquire about your status via telephone, fax or email. Contact information is available in the black banner at the bottom of this page.
The rebate call center is open Monday-Friday from 8 a.m. to 5 p.m. PDT. If you are attempting to reach us on weekends or after hours, you may leave a message, and you'll be contacted within approximately 24 hours from when business reopens.
Yes. If the actual cost of the toilet (excluding installation) is less than the rebate amount being offered, your rebate may cap at the purchase cost. For example, if the rebate offered is $100 for a new high-efficiency toilet but your purchase cost before installation is $85, you may receive a rebate for $85 only.
Yes. If you purchase a new high-efficiency toilet on or after August 12th, 2015 and follow all other terms and conditions listed, you are eligible for a rebate. Reminder: You must be replacing a toilet that flushes at more than 1.6 gpf with a high-efficiency toilet that flushes at 1.28 gpf or less and is WaterSense certified.
A copy of your water bill (or energy bill for applicants with domestic wells) is used to determine eligibility. We verify your name, account number, service address and the type of service listed. We must see active water service (or energy service for domestic wells) to approve your rebate. This bill will not be used for any other purpose other than verification of address and owner.
Contact your HOA management and request a proof of service letter to show the following items:
Water Service Address.
Water Service Supplier, Water Agency, and Account Number.
Name of Homeowner.
If it is not possible for you to obtain this directly from your Homeowner's association, you may send an electric bill along with the master water bill. Please note that homes without direct water service may be subject to additional review to determine eligibility.
If you are renting or leasing a qualified single-family home, you must have written authorization from the property owner or authorized property manager to apply for a rebate. If you are a property owner or manager and the account is in the tenant's name, you may apply for the rebate with proof of ownership or written authorization by the account holder. In all other cases, the rebate application must be in the account holder's name only.
If you receive bills infrequently, your most recent water bill will be acceptable. If you do not have a bill, or have not yet received your first bill, request a copy of your water bill from your local water agency.
No. Only toilets that meet the stated eligibility criteria qualify for a rebate. Many toilets have similar model numbers, but only the exact models on the list will qualify. There may be instances where new products are not yet on our list. These models may qualify, but there could be delays in processing until the product list has been updated to include the new model. We recommend that applicants visit the qualifying toilets list to confirm eligibility prior to applying for a rebate.
Toilets purchased through Amazon or eBay may qualify if it can be confirmed that the toilet being sold is new. If you purchased a new toilet through one of these websites, you must include the paid invoice with the condition clearly stated. If the condition indicates the product is anything other than new, the product will be considered ineligible for a rebate.
This Program is not affiliated with, does not endorse any contractor and does not offer a Contractor Direct Rebate Option. Selecting a contractor must be done by the customer, and the program does not express any preference toward a contractor nor guarantee any contractor's work. Please see the program terms and conditions for disclaimers regarding contractors and installation.