A 9.9% rate increase was approved by City Council in December 2017 in an 8-3 vote to help pay for infrastructure improvements like wastewater pipes.
Customers should expect to pay about $6.55 more per month on their SAWS bill, said Anne Hayden, a spokesperson for SAWS.
SAWS serves more than 1.8 million people throughout the San Antonio area, according to the water utility's website.
SAWS water bills increased by 5.8% in 2018 and 4.7% in 2019.
The increase has also helped fund the Vista Ridge Pipeline, a 142-mile long water pipeline running from Burleson County to San Antonio. It will be the longest water pipeline in Texas.