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Greater Cincinnati Water Works

Providing The Highest Quality Water

Greater Cincinnati Water Works provides about 133 million gallons of water a day through 3,000 miles of water mains to most of Hamilton County and parts of Butler and Warren Counties in Ohio, and to Boone County in Kentucky.

Our mission is to provide customers within our regional communities a plentiful supply of the highest quality water and excellent services. Cincinnati water meets or exceeds national health standards. Read More

GCWW Means Water Quality

Investing To Protect Our Customers

Greater Cincinnati Water Works has always taken the lead in water quality research and technology to protect public health. We have been featured nationally for our state-of-the-art water treatment and research.

To ensure the highest quality drinking water, GCWW uses the latest treatment techniques in its state-of-the-art facilities to remove harmful contaminants.

We also test the water more than 600 times a day throughout the treatment and distribution system to ensure the water is of the highest quality when it reaches your tap. Read More

Contact GCWW

Greater Cincinnati Water Works
4747 Spring  Grove Ave.
Cincinnati, Ohio 45232

Phone: 513-591-7700
Email: custcare@gcww.cincinnati-oh.gov

Contact us at 513-591-7700 for:

  • Water quality inquiries
  • Customer billing inquiries
  • Water emergencies (24 hour)


Water Main Breaks and Leaks

Due to recent cold temperatures, Greater Cincinnati Water Works is experiencing an increase in the number of water main breaks and leaks.  Our team is working around the clock to make necessary repairs and salt impacted roadways as needed.

To confirm a water main break or leak in your area, please see our current list of water main breaks and leaks.  To report a water main break or leak that is not listed, please email custcare@gcww.cincinnati-oh.gov (Monday – Friday, 7:30 a.m. – 5:00 p.m.) or call 513 591-7700.

Latest News

Diesel Spill on the Ohio River

GCWW Takes Precautions to Ensure Water Safety

Algae Blooms Not Affecting Local Drinking Water

Drinking water from Greater Cincinnati Water Works is not affected by any algal blooms.

Water Rate Adjustment Approved by Cincinnati City Council

Greater Cincinnati Water Works’ mission is to provide customers within our regional communities a plentiful supply of the highest quality water and excellent services.

In order to continue delivering quality drinking water service to ratepayers, the Cincinnati City Council approved a 4% water rate increase which will be effective January 1, 2015.  The 4% rate increase will mean the cost to the average inside City customer for water service will increase 74¢ per month based on an average usage of 148.6 gallons per day.  Read more.

OKI Wants to Know What You Think


The OKI Regional Council of Governments is updating a policy plan to improve quality of life and service to the public in southwest Ohio, northern Kentucky, and southeast Indiana, and they want to hear from you. Issues in the plan affect everyday life in the region, such as congestion on roadways, the attractiveness of communities for business and job creation, housing for all ages, income levels and family types and adequate water and sewer facilities. The draft plan and questions to invite feedback are available on-line.  To find out more and share your opinions, visit www.howdowegrow.org

2013 Water Quality Report Available Electronically

Get to know… your H2O.  Drinking water from Greater Cincinnati Water Works (GCWW) met or exceeded all federal and state health standards in 2013.  Read more.

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