Four ZIPs, one mailing name: what Lawrenceville covers
Lawrenceville has four standard ZIP codes: 30046, 30043, 30044 and 30045. Census land-area data puts about 90 percent of the incorporated city inside 30046, the ZIP for the downtown core and county seat.
The other three are mailing areas. By Census land-area overlap, only a small share of the city limits falls inside them. Many addresses with a Lawrenceville mailing address are in unincorporated Gwinnett County, not inside the city.
That matters on a bad night. Your mailing city does not decide who owns the street main or which office issues a permit, so give the dispatcher the street address. Emergency calls from all four ZIPs go to the same 24/7 line, dispatched from Suwanee to Lawrenceville and nearby towns.
Closer to the Duluth or Buford side? Our Duluth page and Buford page pages explain coverage there. The full list is on the service area page.
The county took over the water pipes under your street in December 2020
On December 1, 2020, Gwinnett County took ownership of the City of Lawrenceville water distribution system. Lawrenceville kept its wells, storage tanks and treatment plants and still bills customers for its other utilities.
The county also committed to a minimum of $13.3 million in repairs, replacements to the system over 10 years. The announcement does not say which streets come first.
The plumbing implication is a clean dividing line. Gwinnett County Water Resources maintains the main, the small pipe from the main to your meter and the meter itself. Everything on your side of the meter is yours, including the water line to the house, the pressure-reducing valve and the sewer lateral.
So a pressure drop or a wet spot between the meter and the house is a job for a water line repair call to us. A street-wide outage or a main break in the road is a call to the county dispatch line at 678.376.7000, which is staffed around the clock. When you are not sure which side of the meter a leak is on, call us first.
Who to call: county, city or plumber
The right first call saves an hour.
| Problem | First call | Why |
|---|---|---|
| Main break or no water on the whole street | Gwinnett County Water Resources, 678.376.7000 | The county owns the main and the meter |
| Leak or low pressure between the meter and the house | Plumber (24/7 line) | The water service line is on the owner side of the meter |
| Sewage backing up inside the house | Plumber, then the county if neighbors are affected | The private lateral and cleanouts are the owner responsibility |
| Smell of gas | The gas utility or 911 | Leave the building first, call the plumber afterward |
| Water bill question after a repair | County Customer Care, 678.376.6800 | The county bills for water since the 2020 takeover |
Gas in Lawrenceville comes from the City of Lawrenceville Gas Department for city residents and parts of Gwinnett, or from Atlanta Gas Light for many other homes.
Housing age: about 30 percent of homes predate 1980
Census estimates (ACS 2020 to 2024) put 30.2 percent of Lawrenceville housing units before 1980, another 35.6 percent between 1980 and 1999, with a median build year of 1988.
Fixtures, shutoff valves and water heaters in homes from the 1980s and 1990s have had decades of use, so a dripping stop valve under the sink is often a replace job, not a tightening job.
Older homes are where a repiping conversation can start, but only after a plumber has looked at the actual pipe. We do not assume a pipe material from a build year.
Around the downtown square, where the 1885 Gwinnett Historic Courthouse anchors the block at 185 West Crogan Street, buildings vary widely in age. If yours is an older building, tell the dispatcher roughly when it was built.
Signs a Lawrenceville home needs a plumber tonight
Some drips can wait until morning. These cannot.
Water at the meter keeps moving
The county advises that nothing on the meter should move when no water is in use. If the needle spins with every tap off, a leak is running somewhere on your side. A leak detection visit finds it without opening walls.
Wet ceiling under a bathroom
Water pooling above drywall can sag a ceiling within hours. Shut the main and call the emergency line.
No hot water and a puddle
A tank that is leaking at the base is done. A water heater replacement is the usual outcome, while a failed element or valve may be a water heater repair.
Several drains gurgle at once
That points to the main line, and the blockage sits low in the system. Drain cleaning starts from the cleanout nearest the house.
Plumbing permits and the Planning & Development office
The City of Lawrenceville Planning & Development Department issues permits for plumbing work, and its inspections page lists plumbing among the inspections it performs. The phone is 678-407-6583.
That applies to addresses inside the city. If your Lawrenceville mailing address is in unincorporated Gwinnett, the city office is not your permit office. Permit rules vary by project, so ask the city before replacing a water heater or changing a line, and ask your installer who pulls the permit.
If a fixture is flooding the room, shut off the water and call the 24/7 line first.
Before the Plumber Reaches Your Lawrenceville House
Find the main shutoff
The county cares for the meter and the pipe to it, but the shutoff valve inside or outside your house is yours. Turn it once before an emergency so you know it moves.
Clear a path to the water heater
Water heaters in these homes sit in garages, closets and utility rooms. Move boxes and storage so the plumber can reach the tank, and shut off the gas or breaker first if a tank is leaking.
Know your street address and your bill
Mailing addresses in 30043, 30044 and 30045 are often outside city limits. Have the street address ready.
Find the cleanout
Look for a capped pipe near the house or at the property edge. Gwinnett County standards require one at the right-of-way, and a second near the home is the owner side.
Protect floors and electronics
Lift rugs and electronics off wet floors and keep people away from wet outlets. If sewage is surfacing, stop using drains until the line is cleared.
Lawrenceville plumbing questions
We serve all four: 30046, 30043, 30044 and 30045. We dispatch from Suwanee and serve Lawrenceville and the nearby towns, so the same 24/7 line covers every one of those ZIPs. Many 30043, 30044 and 30045 addresses are outside the city limits, and that does not change how you reach us.
Yes. The 24/7 emergency line takes calls at night and on weekends. While you wait, shut off the main, keep people away from wet electrical areas and stop using any drain that is backing up.
If you smell gas, leave the building and call the gas utility, for most homes Atlanta Gas Light at 877.427.4321, or 911 first, and then call the plumber.
The county owns the main, the pipe to the meter and the meter. Everything on your side, including the line to the house, is yours. A water line repair on that stretch is a private job.
The county committed to at least $13.3 million in work on the former city system over 10 years. That covers the distribution system, not the plumbing inside your house or the line from the meter.
A meter test, like the one in the signs above, narrows down whether water is leaking at all. If the leak is under the floor, see our slab leak repair page for how that repair works.