Gwinnett County is Grayson's water utility, and the City of Grayson takes building permit applications online and runs a tenant-change compliance inspection process for business spaces. Gas comes through the City of Lawrenceville's gas system. Call the number on this page to be connected with a local plumber in Grayson.

What happens when a new tenant moves into a Grayson space?
Grayson has a tenant-change compliance inspection process, and its instructions say to schedule city inspections at 770-338-8000. That makes it a good time to have a plumber check restroom fixtures, the water heater and any floor drains before opening. Building permit applications go through the city's online portal, and City Hall on Grayson Parkway is at 770-963-8017. Whether plumbing-only work goes through the same portal wasn't stated in our sources, so ask City Hall first.
Who supplies water, sewer and gas?
The City of Grayson says plainly that Gwinnett County is the water utility for the city. Sewer is less clear-cut. A city project to extend sanitary sewer through Grayson Industrial Park ties into the Gwinnett system and needs Gwinnett's approval, but no city page states the sewer provider outright, and some properties are not on municipal sewer and drain to private onsite wastewater systems instead. Ask the landlord or check the bill before assuming a building sewer runs to a county main.
Gwinnett is responsible for the pipes that bring water to the meter; everything from the meter to the building is the owner's. Backflow questions go to Gwinnett DWR at 678.376.4213. Our sources didn't confirm the testing interval.
Gas is a Grayson quirk: city residents' gas comes through the City of Lawrenceville's gas utility, not Atlanta Gas Light. If anyone smells gas, leave the building and call 911 and the City of Lawrenceville gas emergency line, 770-963-3332, from outside.
Are buildings here new?
Mostly. Grayson grew from 765 residents in 2000 to 4,730 in 2020, and its median home was built in 2012, with under 4% predating 1980. Most commercial plumbing is recent PEX or CPVC and newer fixtures, so problems tend to be installation issues, clogs and early equipment failures rather than corroded pipe.
A short local note
Newer buildings can still hide trouble. Construction debris in a drain, a water heater set up for a different tenant's use, or a missing backflow device for irrigation are common finds in newer commercial buildings. A walk-through with a plumber before signing a lease can catch these early.
Commercial Plumbing questions in Grayson
What should employees do if they smell gas at work?
What if the property isn't on municipal sewer?
Which office issues the permit for commercial plumbing work?
In a leased space, who pays for plumbing repairs?
More plumbing services in Grayson
Commercial Plumbing nearby
Helpful guides
Sources
- City of Grayson: Community Links
- City of Grayson: Forms and Applications
- City of Grayson: Tenant Change Compliance Inspection Process
- Gwinnett County Water Resources: About Lead
- Gwinnett County Water Resources 2025 Water Quality Report
- City of Lawrenceville: Natural Gas Department
- Grayson housing by year built (ACS 2019-2023, via Point2Homes)
Last updated: