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Westerville Water Remains in Compliance with Lead Regulations 

The Ohio EPA drinking water lead regulation (to protect public health) is based on water samples taken directly from faucets in homes identified as having potential lead sources in their plumbing. Compliance with this Ohio EPA regulation requires that at least 90% of the samples be below 15-parts-per-billion (pbb). The recently completed 2018 lead monitoring program for Westerville met this requirement and did not detect lead in any of the samples. 

Westerville has operated a public water supply since 1901. Today, the City Water Division runs a 7.5 million gallon a day water treatment facility serving more than 15,000 homes and businesses. The treatment plant is located at 312 W. Main Street. The plant is Ohio EPA-licensed to treat 7.5 million gallons a day and is operated 24 hours a day, 365 days a year. 


The high-quality drinking water produced by Westerville meets all water quality regulations. In fact, Westerville has received the Outstanding Public Water System Award from the Ohio EPA. 

The treatment process is broken into many steps to produce premium quality drinking water, including coagulation using ferric chloride and settling to remove particles; softening using lime and caustic soda to remove calcium and magnesium which contribute to water hardness; disinfection using chlorine to kill harmful microorganisms; filtration using sand filters to remove fine particles and granular activated carbon to remove any potential organic contaminants; fluoridation for dental protection; corrosion control using phosphate; and taste & odor control with powdered activated carbon. The water is softened to approximately 125/mg/1 or 7 gpg and has a fluoride level of .9 mg/l. Additional water quality information is available by contacting the plant at (614) 901-6770. 

Water Division 
312 W. Main Street 
Westerville, Ohio 43081-2119 
(614) 901-6740 Emergency 
(614) 901-6770 Non-Emergency 




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