Chapel Hill businesses get water and sewer from OWASA, which also sets the backflow testing rules, while the Town's Building Permits and Inspections office issues the Trade Work permit for plumbing changes. Most commercial calls here involve restroom fixtures, kitchen drains and grease, water heaters and the private service line. Call the number on this page to be connected with a local plumber in Chapel Hill.

Signs a Chapel Hill business should get a plumber in
- A kitchen sink or floor drain that slows down a little more every week
- A sewer smell near a mop sink, floor drain or cleanout cap
- Restroom toilets or urinals that run after flushing and raise the water bill
- Hot water that fades halfway through a busy shift
- Damp ceiling tiles under an upstairs restroom or break room
- An irrigation backflow assembly that hasn't been tested this year
Water, sewer and permits in Chapel Hill
OWASA serves the Carrboro-Chapel Hill community, drawing from University Lake and Cane Creek Reservoir and treating water at its Jones Ferry Road plant. It disinfects with chloramines for most of the year and switches to chlorine for a short period in spring, so a business may notice a change in taste or smell around March. Sewage goes to the Mason Farm Wastewater Treatment Plant through roughly 350 miles of sewer pipe.
Grease is the sewer issue food businesses should take seriously. OWASA asks customers to keep fats, oils and grease out of drains, and its 2022 wastewater report card notes that grease caused several sewer overflows that year. A grease trap or interceptor that gets pumped and cleaned on schedule protects both the building's drain line and the public sewer.
The water line from OWASA's system to the building is the owner's private service line, and OWASA asks owners to repair private sewer laterals when smoke testing turns up defects. The Town requires a Trade Work permit for installing, extending, repairing or altering plumbing, and the permit page names water heaters, irrigation systems and water and sewer lines. Applications go through the Town's OpenGov portal.
Chapel Hill's building stock is mixed. The median home was built in 1988 and about 35% went up before 1980, so older buildings near campus and the historic districts can still have aging drain pipe, while the planned communities such as Meadowmont and Southern Village are newer.
What affects the cost
- How many fixtures, units or floors the problem touches
- Whether a camera inspection or leak locating is needed to find the cause
- After-hours or weekend scheduling to avoid closing during business hours
- Access above drop ceilings, behind finished walls or under a slab
- Permit and inspection steps for water heaters, new fixtures or line work
What happens when you call
You'll be connected with an independent local plumber who does commercial work in Chapel Hill. Be ready to describe the type of business, which fixtures are affected and when the space can be taken out of service. Tenants should know whether the lease puts plumbing repairs on them or on the property owner before approving work.
Commercial Plumbing questions in Chapel Hill
Does a restaurant or food-service space need a grease interceptor here?
Does the water utility require backflow testing at a business?
Where does the permit for commercial plumbing work come from?
Where does the utility's part of the water line end?
More plumbing services in Chapel Hill
Commercial Plumbing nearby
Sources
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