Person using water faucet with water filling a basin

General Information

The City of Trenton uses groundwater as its source to supply its consumers. Prior to 2006, The City of Trenton pumped its water directly into the distribution system from the wells. The quality of the groundwater is so high that it only needed the addition of fluoride (for dental health) and chlorine (for disinfection).

Ion Exchange Water Treatment Plant

In 2006, Trenton built an Ion Exchange Water Treatment Plant that helped provide an even higher quality of water to the consumers by cutting the hardness of the water down significantly. The City provides this high-quality water to all of our industrial, commercial, and residential customers within the corporate limits of Trenton. We do provide water service to customers outside the city limits as well. The current population served by the water system is approximately 13,012 or 4,618 service connections, with an average daily demand of 1.182 million gallons per day (MGD). The transmission and distribution system consists of approximately 55 miles of pipe varying in size from 4 inches to 16 inches. 

Approximately 60% of the pipe is cast iron, 35% is ductile iron, and 5% is PVC. There are approximately 700 fire hydrants located throughout the system.

Single Pressure System

The City of Trenton's water system is a single pressure system consisting of four supply wells, one Treatment Plant, one storage tank, and one clear well. Additionally, the water distribution system consists of 55 miles of water main. The City of Trenton has two separate well fields.


The City of Trenton is located on three aquifers identified by the Ohio EPA, the Great Miami River Alluvial Aquifer (GMRAA), the Great Miami River Buried Valley Aquifer (GMRBVA), and the Trenton Buried Valley Aquifer (TBVA).

Cartoon technician inspects pipes

Water Division Responsibilities

  • Administering the Backflow Prevention program
  • Administering the Fats, Oils, and Grease (FOG) program
  • Leak detection and elimination
  • Maintenance of water mains, service lines, and water meters
  • Meeting or exceeding local, state, and federal requirements with our water product
  • Monthly meter reading
  • Providing a continual flow of quality water to the residents and businesses of Trenton
  • Providing timely, responsive, and friendly customer service to our water users
  • Supplying water to residential and commercial customers
  • Turn on's and shutoffs

Environmental Protection Agency (EPA) Compliance

The U.S. EPA administers Federal laws and establishes guidelines that help control the quality of water distributed to the public. Among these laws and guidelines is the Safe Drinking Water Act which includes the Primary and Secondary Drinking Water Standards which regulate key contaminants, require monitoring of unregulated contaminants, establishes benchmark water treatment technologies, and protects groundwater sources. The Ohio EPA provides for monitoring and enforcement of water quality standards for the area with programs such as the Wellhead Protection Program. Any substantial change to treatment facilities, water supply, or transmission and distribution facilities must be approved by the Ohio EPA. The City is in compliance with the Ohio EPA on these matters

Backflow Prevention Program

Butler County Water & Sewer (BCWS)

Butler County Water and Sewer handle Trenton's wastewater.  The attachment is from BCWS expressing concerns of items being flushed and causing issues with their lift stations. Please be aware that flushing sanitary wipes, paper towels, and rags into the sewer system will damage equipment and could cause unpleasant side effects.

Person pouring water at faucetWater Quality Reports

View our water quality reports.