Direct answer: If your water heater is leaking in Marietta, turn off the water supply to the unit if you can do so safely, keep the area clear, and call a licensed plumber. Tank leaks often mean replacement is needed; connection leaks may be repairable.
What to do first
- Look for active dripping or pooling around the tank or connections.
- Turn off the cold-water supply valve to the heater if accessible.
- Turn off gas or power only if you know how and it is safe to do so.
- Call for professional help — do not ignore slow seepage.
Shutoff guidance
The shutoff is usually on the cold-water line above the heater. If you cannot find it or the leak is spreading quickly, call our office and we will walk you through next steps.
When repair may be possible
- Leaks at supply connections, relief valves, or drain fittings.
- Recent installation issues that can be corrected.
- Component failures on tankless units with accessible parts.
When replacement is likely
- Rust or moisture from the tank shell itself.
- Older units with repeated failures or poor recovery.
- Significant sediment, corrosion, or safety concerns.
Residential and commercial note
Homes and businesses across Cobb County rely on dependable hot water. Whether you manage a single-family home or a customer-facing commercial space, we evaluate tank and tankless systems and explain repair vs replacement in plain language. See water heater services and commercial plumbing.