Skip to content

Understanding the Water Distribution System

There are a number of components of the water system leading from the production facility to your home or business. The following is a general overview of the water distribution infrastructure.

Water Distribution System overview showing how the water mains connect to metered residential dwellings.

Customer-Owned Service Line – This line runs from the meter into your home and is owned and maintained by the property owner.

Meter Setting – This water meter is positioned between the customer-owned service line and the OMU-owned service line. The meter is read monthly to determine water usage for each customer. It is maintained by OMU.

OMU-Owned Service Line – This water line runs from the meter to a water main.

OMU Secondary Main – This main is a smaller main connected to a larger primary main. These are maintained by OMU. These secondary mains typically deliver water to locations (homes and businesses) along smaller streets.

OMU Primary Main – These are larger mains used to distribute water throughout the OMU system.

Flexible Main Connectors – These connectors, some of which are lead, are used to connect smaller water mains to larger ones.

Illustration showing Flexible Main Connector attachment from Water Main to Galvanized Main

Service Line Connectors – These connectors, some of which are lead, are used to connect water mains to galvanized service lines.

Illustration showing Service Line Connector attachment from Water Main to Galvanized Service Line

Short Service Line Connectors – These connectors, some of which are lead, run from the water main directly to a meter setting.

Illustration showing Short Service Line Connector attached from Water Main to Meter & Setting