Missouri Public Service Commission Continues Inclining Block Rate Pilot Program in Mexico

MEXICO, MO (May 27, 2021) – The Missouri Public Service Commission has approved a continuation of Missouri American Water’s inclining block rate pilot program in Mexico, with new rates to take effect May 28. 

“We are committed to meeting the needs of our customers by carefully planning and investing in our systems to provide safe, clean, and reliable service,” said Patrick Kelly, operations manager for Missouri American Water.  “The continuation of the inclining block pilot program provides our customers with a greater ability to lower their bills through wise water usage.”     

The inclining block rate pilot program first began in 2018 to encourage water efficiency.  Under an inclining block rate, water rates increase with usage, so customers who use low amounts of water pay less per gallon than customers who use large amounts of water.   

The Commission approved the following inclining block rates for volumetric usage: 

  • First 3,000 gallons = $5.7266 per 1,000 gallons 
  • Next 7,000 gallons = $7.1583 per 1,000 gallons 
  • Over 10,000 gallons = $7.9027 per 1,000 gallons 

Most residential customers in Mexico will see lower rates because of the new billing structure. Residential water customers using more than 5,000 gallons per month will see a slightly higher bill.  Customer bills are comprised of both a volumetric usage charge and a fixed customer charge, which is $9.00 per month for most residential customers based on a 5/8” meter size.

As part of the pilot program, customers who wish to request a leak detection kit can contact Carolyn Volpert at   

The decision to continue the inclining block rates was part of a rate review process that began last year.  The Commission’s rate order includes approximately $620 million in water and wastewater system improvements made by Missouri American Water since the end of 2017.  

For more information on the new water and wastewater rates, customers can visit the Rate Review page of Missouri American Water’s website here.  

Missouri American Water, a subsidiary of American Water (NYSE: AWK), is the largest investor-owned water utility in the state, providing high-quality and reliable water and/or wastewater services to approximately 1.5 million people. For more information, visit and follow Missouri American Water on Twitter, Instagram and Facebook.

About American Water

With a history dating back to 1886, American Water is the largest and most geographically diverse U.S. publicly traded water and wastewater utility company. The company employs more than 7,000 dedicated professionals who provide regulated and market-based drinking water, wastewater and other related services to 15 million people in 46 states. American Water provides safe, clean, affordable, and reliable water services to our customers to help make sure we keep their lives flowing. For more information, visit and follow American Water on Twitter, Facebook, and LinkedIn.

Media Contacts

Samantha Williams

Manager, External Affairs