Whole-House Water Filtration in Gwinnett County, GA

Probably not, if you're on city water — and that's the honest answer most water-treatment companies won't give you. Gwinnett County, City of Atlanta, and DeKalb supply is soft to slightly hard, generally around 1–3 grains per gallon, which isn't enough to scale up your fixtures. Softeners make sense on private wells in the outlying counties, where hardness commonly runs 7–15+ grains. We test before we quote, and if your water doesn't need softening we'll tell you so.

A whole-house carbon tank typically runs $1,200–$3,500 installed for a two-to-four-bath home, while a combined softener and carbon system for well water generally falls between $2,500 and $5,000. A basic sediment-and-carbon cartridge setup is less. Labor is usually a half day, and the price we give you after the water test includes the equipment, the permit, and the install.

At the main line, right after the water enters the house and before it branches — critically, ahead of the water heater, so both your hot and cold water are treated. It needs enough clearance for tank service, and softeners and backwashing filters also need a drain and a nearby outlet. In most Gwinnett County homes that's the garage, basement, or a crawlspace wall near the meter side of the house.

It shouldn't. A system sized to your home's actual flow rate and plumbed with full-diameter ports has minimal effect on the pressure you feel at a fixture. When people do notice a drop, it's almost always a cartridge that's overdue for changing or a unit that was undersized for the house to hit a lower price. Sizing correctly up front is the whole fix.

Usually yes. Georgia moved to the 2024 International Plumbing Code as of January 1, 2026, and cutting into the main to add treatment equipment is permitted plumbing work in most Metro Atlanta jurisdictions. The code also requires backflow protection on the equipment and an air gap where the drain line ties into your DWV system. We pull the permit and handle the inspection — that paperwork is also what keeps the install clean at resale.

Sediment cartridges usually go every three to six months, and carbon cartridges every six to twelve, depending on your water and how much you use. Tank media is a different story — a carbon bed typically lasts five to ten years before it needs rebedding, and softener resin often runs ten to fifteen. If you have a softener, plan on adding salt to the brine tank every month or two.

A quality carbon system reduces both meaningfully. Chlorine and chloramine react with organic matter in the supply to form disinfection byproducts like TTHMs and HAA5, and activated carbon is the standard treatment for them, along with many PFAS compounds. We specify equipment tested to NSF/ANSI 42 for chlorine, taste, and odor and NSF/ANSI 53 for health contaminants like lead. For the lowest possible levels at the tap you drink from, carbon at the main paired with reverse osmosis at the kitchen sink is the stronger setup.

A salt-free conditioner doesn't actually remove hardness — it changes how the minerals crystallize so they're less likely to stick as scale. That's a reasonable trade on mildly hard water, and it needs no salt, no drain, and no regeneration cycle. On a genuinely hard well at 10+ grains, though, only a true ion-exchange softener will bring the hardness number down. Which one we recommend comes out of the water test.