Thank you for your question regarding the Delta Round Front Toilet C41913-WH model. You may make a water level adjustment on the fill valve (RP71188) within the tank. Please visit the link below and review Step 2 on Page 2 to see how to make the adjustment:
Also, while this toilet is only designed to use 1.28 GPF (gallons per flush), you may also hold the tank lever down for a few seconds longer to allow for more water to flow through the tank into the bowl, which will help to clean the bowl and still conserve water, since older toilets were designed to use anywhere from 3-7 GPF.
I hope this is helpful and if there is anything further we may be able to help with, please do not hesitate to give us a call on our warranty line at 855-345-1345 and we will happily help you where we can!
Date published: 2019-02-20