Lima's Water System 

Aerial of Water Plant 10.05.2023

The City of Lima’s original water source was pumped from wells dating back to the late 1800’s.  Since that time the Water Treatment Plant has progressed into 5 active up ground storage reservoirs which hold a total of 15 Billion Gallons!

The East Side Reservoir complex is fed from 2 pump stations from the Ottawa River and includes Lost Creek, Metzger and Ferguson Reservoirs.  

  • The smallest of all of our reservoirs is Lost Creek Reservoir.  It was built in 1918 and holds 893 Million Gallons. 
  • Metzger Reservoir was built in 1946 and holds 1.2 Billion Gallons
  • Ferguson Reservoir was built in 1958 and holds 2.2 Billion Gallons

The West Side Reservoir complex is fed from 2 pump stations from the Auglaize River and consists of Bresler and Williams Reservoirs. 

  • Bresler Reservoir, which is the city of Lima’s second largest reservoir.  It was build it 1970 and holds 4.92 Billion Gallons
  • The largest reservoir with the most capacity is Williams Reservoir. Built in 2012 and hold 5.2 Billion Gallons!  That’s a lot of water!

From the reservoirs the water goes to the water treatment plant.  The water then goes through several stages of treatment that we like to refer to as a multiple barrier approach. The first stage of treatment is when the water is pumped from the Ottawa and Auglaize rivers into the reservoirs. Pumping the water in the reservoirs allows particles to settle out in the reservoirs bottoms. This step helps clear the water before it is sent to the water treatment plant.  Once the water reaches the water treatment plant, we soften the water, adjust the PH, filter the water through sand and carbon filters and then disinfect it with chlorine to make the water safe for everyone to drink.  The treated water is stored in 4.4 million gallon underground storage tanks.  In addition to water stored at the plant, we also have about 4 million gallons of water stored in 5 elevated tanks throughout the water system.  The water from the plant is pumped into the distribution system from large capacity pumps.  Today the water treatment plant treats and provides the community around 15 MGD!