Independent U.S. water utility directory · 2026 edition
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State utility hub

Water utilities serving Ohio

Browse the indexed community water systems in this state. Each profile brings the provider’s payment routes and household protection policies into a single, practical guide.

117 systems indexed2026 directory
39

Service area: Columbus and 23 contracted Central Ohio communities

Population: Columbus Water & Power's 2025 official water-quality material says the Division of Water delivers drinking water to approximately 1.4 million consumers in Columbus and contracted suburban service areas. The system serves 23 communities, operates three treatment plants with a fourth in design, and maintains approximately 300,000 water meters.

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39

Service area: Greater Cincinnati region, including Cincinnati and parts of Hamilton, Butler, Warren, and Clermont counties in Ohio plus Boone County, Kentucky

Population: More than 1.1 million people in the regional service area; GCWW supplies more than 43 billion gallons annually and also acts as a billing agent for some local sewer and stormwater utilities.

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39

Service area: Akron and retail/contract communities in Summit County, including Fairlawn, Mogadore, and portions of Bath, Boston, Copley, Coventry, Cuyahoga Falls, Hudson, Springfield, Stow, Twinsburg, and Twinsburg Township

Population: More than 300,000 people; the City’s budget materials describe more than 85,000 accounts, while the City’s 2023 Annual Information Statement reports nearly 90,000 accounts serving Akron, six other municipalities, and parts of five adjacent townships.

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39

Service area: Toledo and regional contract customers in Lucas, Wood, and Fulton Counties, including portions of southern Monroe County, Michigan, plus Maumee, Perrysburg, Sylvania, Northwestern Water and Sewer District, South County Water District, and Whitehouse

Population: Approximately 500,000 people across Toledo and the regional water-supply footprint. City materials describe roughly 130,000 water customers and identify a regional system serving Toledo, portions of Lucas/Wood/Fulton Counties, and southern Monroe County, Michigan; current Water Distribution materials report approximately 136,000 metered accounts.

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Private Investor-Owned Utility

Aqua Ohio (Mentor service area)

39

Service area: Mentor and Aqua Ohio service area

Population: 74,500 people served according to the EPA queue; Aqua Ohio is the designated private water company serving the Mentor system under the City of Mentor water regulations.

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Ohio directory notes

How to compare water utilities in Ohio

This state hub brings together 117 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.

The most important distinction is between a directory listing and an official account channel. Water Ledger provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.

If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.