Water Treatment & Distribution System Overview

Two units located at separate sites provide for continuous monitoring and control of the water and sewer systems.

 Primary water source  Seven wells with capacity of over 10 MGD  Water conveyed to treatment plant via a river crossing and 2 miles of raw water line

Installation of raw water line in 1975

 Capable of treating 5.4 MGD  Designed for Iron and Manganese Removal  State of Ohio Class III plant (second highest level of plant)

Clearwell Water Treatment Plant Medium Service Booster Station Abandoned Clearwell

Raw Water from Well Field Reaction Basin #1 Reaction Basin #2 Filters Finished Water to Distribution System Prechlorination for Iron & Manganese Reaction KMnO4 for Iron & Manganese Reaction Polymer & Chlorine for Filter Conditioning Chlorine for Disinfection Fluoride for Dental Health

 8 multi media filters  Provide iron & manganese removal Typical Filter Configuration of gravel, garnet, sand and anthracite

o Done based on effluent turbidity o Water is pushed back through filters removing build up of iron and manganese o Used water is sent to the sewage system

 Potassium Permanganate  Anionic Polymer  Chlorine (Pre and Post)  Fluoride

 Used for manganese removal  Strong Oxidizer  Not combustible but could enhance combustion of other materials  Gives off irritating fumes in fire

 Use gaseous chlorine for disinfection and treatment  Strong Oxidant  Not combustible but reacts violently w/combustibles  High health hazard

 Add hydrofluosilicic Acid for dental health  Corrosive  Not flammable but reacts with many metals to produce flammable and explosive hydrogen gas

 Used as a filter aid

 Maintain OEPA bacteriological and chemical certifications  Conduct daily testing for chlorine, fluoride, pH, turbidity and other process controls

ParameterTypical Results Iron0.08 to 0.12 mg/l Manganese0.3 to 1.5 mg/l pH7.5 to 8.0 ChlorineNone Fluoride0.2 mg/l

ParameterTypical Results IronBelow detectable limit Manganese0.02 mg/l pH7.5 to 8.0 Chlorine0.8 mg/l Fluoride1 mg/l

 Two 1.5 million gallon clearwells used to store finished water

 Due to the geography of the city, three different pressure zones have been defined – low, medium and high.  Some parts of the system operate off of gravity.  Other parts must have assistance so booster pumps are used.  Water pumped and stored in tanks provides pressure head.

 Located at the Water Treatment Plant  Pumps water to the low service area and Fairfield Park Tank

A – From Plant B – Booster Station C – To Primary Mains/ Customers D – Water Tower Water Towers are tall to provide pressure. Each foot of a height provides.43 pounds of pressure. So a tank that is 100 foot tall has a pressure of 43.3 pounds at its base. There is only one pipe through which water both goes in and comes of our water towers. If water is being pumped from the treatment plant and the demand does not require it, it will go into a water tower. However, if there is more demand than the treatment plant can supply then water will be taken from the tower.

 Services low service area  0.5 million gallons

 Across from the Water Treatment Plant  Services Medium Service & Rona Hills Tank

 2 million gallons ground storage tank  Services medium service

 Old Fire Station  Services Medium Service  Pumps to Five Points Tanks

 Two towers.75 MG.25 MG  Services Medium Service  Hosts city antennas

 Located near Wright State University  Services High Service Area  Pumps to Southwest Tank

 0.5 million gallons  Actually located in Beavercreek  Services high service