About MSD

The Metropolitan Sewer District of Greater Cincinnati (known as MSD) protects public health and the environment through the safe and efficient collection and treatment of wastewater for 43 of the 49 political subdivisions in Hamilton County, Ohio, and small parts of Butler, Clermont, and Warren counties.

MSD's service area encompasses 290+ square miles and serves a population of more than 850,000. MSD maintains about 3,000 miles of sanitary and combined sewers and operates seven major wastewater treatment plants, more than 100 pump stations, two package treatment plants and several high-rate treatment facilities. About 180 million gallons of wastewater is treated daily. Learn more about MSD's facilities.

MSD has a ratepayer base of about 226,000 residential, commercial and industrial customers. Within that base, it monitors about 200 industrial users who discharge pre-treated waste into the sewer system.

View our new "What is MSD?" video, created by college intern DeAndre Davis who is attending the University of the Cumberlands in Ky.

Organization & Structure

MSD was formed in 1968 as a county sewer district under state law. Prior to 1968, the City of Cincinnati operated an independent municipal sewer district that served city residents and 23 suburban communities. MSD is governed by a 50-year agreement between the City of Cincinnati and Hamilton County, known as the 1968 Agreement. As set forth in this Agreement, the City is responsible for the management and operation of the sewer district, while the Board of County Commissioners of Hamilton County, Ohio retains the authority to establish sewer service charges, adopt rules and regulations, and approve operating and capital improvement program (CIP) budgets. The agreement expires April 30, 2018.

MSD staff are City of Cincinnati employees.


Gérald Checco is MSD's Director as of September 1, 2015. Gérald comes to MSD from the City of Cincinnati’s Public Services Department, where he served as Director from March 2014 to August 2015.

Prior to moving to Public Services, he worked for the Cincinnati Park Board for nearly 23 years in superintendent and engineering positions.

You can reach Gérald by phone at (513) 244-5121 or email at Gerald.Checco@cincinnati-oh.gov.

Sunshine behind DIW Building


We are recognized as stewards of the community, protecting public health and the environment, and providing sustainable water reclamation and watershed management.


Our diverse, high-performing and inspired workforce shares a commitment to exceptional service to our community.


At MSD, we believe strongly in our commitment to the community as expressed through our core values:

  • Trust
  • Integrity
  • Transparency
  • Dedication
  • Innovation
  • Leadership
  • Environmental and Financial Stewardship
  • Service
  • Engagement

Contact Us

Report a Sewer Backup:
(513) 352-4900 24/7 or online

Customer Call Center:
(513) 352-4900 24/7

Project Customer Service:
(513) 557-3594

Development Services:
(513) 244-1330

Media Inquiries:
(513) 557-7095


MSD Mailing Address:
1600 Gest St.
Cincinnati, Ohio 45204

MSD Facilities and Directions