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Del-Co Water Company, Inc.
Equal Opportunity Provider and Employer
Corporate Office: 6658 Olentangy River Road, Delaware, OH 43015
Satellite Office: 4940 State Route 229, Marengo, OH 43334
Phone 740-548-7746 | Toll Free 800-521-6779 | Pay By Phone 844-561-0814 | 2026 |

Hours of Operation
Customer Service, Engineering, Distribution & Maintenance | 8 am-4:30 pm | Monday - Friday | Marengo Office closed 12:30-1:15 daily (for lunch)
Water Treatment Operations and Emergency Services | 24 / 7 / 365

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