Ellenwood is unincorporated and spans DeKalb, Clayton and Henry counties, so a business's water utility, backflow rules and permit office all depend on which county the address is in. DeKalb and Clayton each run very different backflow programs. Call the number on this page to be connected with a local plumber in Ellenwood.

What happens when you call
You'll be connected with an independent local plumber who does commercial work in Ellenwood. The first question will be which county the property sits in, because almost everything else follows from that. Check your water bill and tax records before you call. Then describe the business, the fixtures involved and when the space can be closed.
What affects the cost
- Which county permit office applies, and its process
- Whether the building is on municipal sewer; some Ellenwood properties may not be
- Diagnostic work such as a camera or leak locator
- After-hours scheduling
- Backflow testing costs, which differ by utility
Local conditions in Ellenwood
Ellenwood is an unincorporated area along I-675 and GA-42, named for a 19th-century plantation and mostly built up with subdivisions from the 2000s. With no city government, the county utility and county permit office apply.
Water and sewer. In the DeKalb portion, DeKalb County Watershed Management; its 24-hour emergency repair line is 770-270-6243. In the Clayton portion, the Clayton County Water Authority, at 770-960-5200 including after hours. In the Henry portion, the Henry County Water Authority, whose after-hours emergency line is 770-957-6659.
Backflow. The two programs our sources describe work very differently. DeKalb requires commercial and multi-family customers to install an assembly matched to their hazard level and have it tested every year by a certified tester. CCWA runs a commercial backflow program in which, per its program page, its own specialists test devices at customer connections. Henry County Water Authority's requirements weren't covered in our sources, so ask HCWA directly.
Permits. DeKalb County Planning and Sustainability, 404-371-2155 option 3, takes plumbing permits through its e-Permitting Portal, and they must be submitted by a plumbing contractor holding a state license. Clayton County Community and Economic Development in Jonesboro, 770-477-3569, issues plumbing permits there. Henry County's Building Department uses the SagesGov portal, 770-288-6051.
Before the plumber arrives
- Confirm the county and water utility from the bill
- Find the main shutoff and any backflow device
- Note the affected fixtures and when it started
- Have the landlord's contact handy if you lease
Gas leaks are the same everywhere: leave the building first, then call 911 and Atlanta Gas Light at 877.427.4321 from a safe place.
Commercial Plumbing questions in Ellenwood
Our address uses this town name, but we may be outside city limits. Does that matter?
Does a business here need a backflow prevention assembly?
Which office issues the permit for commercial plumbing work?
What if the property isn't on municipal sewer?
More plumbing services in Ellenwood
Commercial Plumbing nearby
Helpful guides
Sources
- Ellenwood, Georgia (Wikipedia)
- DeKalb County Watershed Management
- DeKalb County Watershed Management: Backflow Prevention Brochure
- Clayton County Water Authority: Backflow Prevention
- Clayton County Water Authority: Who We Are
- Clayton County Water Authority: Customer Service
- Clayton County Water Authority: Contact Us
- Atlanta Gas Light: Contact Us
- Henry County Water Authority
- DeKalb County: Permits, Plan Review and Inspections
- Clayton County: Building Permits
- Henry County: Permit Portal
- DeKalb County 2026 Water Quality Report
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