For an Atlanta home on municipal water, the Viomi V8 PRO is a practical tankless under-sink choice, built around the connections a kitchen sink already has: the cold shutoff valve, a faucet spot on the sink deck, the drain pipe and an outlet in the cabinet. Its feed water adapter, drain saddle and drinking faucet come in the box, and a kitchen survey records where each of those points sits in your house, along with which utility supplies the water.
A line-by-line look at Atlanta's water report sits in a separate guide to water filter brands for Atlanta, Georgia.
Which Utility Fills Your Atlanta Sink
An Atlanta mailing address does not always mean City of Atlanta water. The City of Atlanta Department of Watershed Management (DWM) supplies about 105 million gallons a day to more than 1.2 million metro residents, drawing on the Chattahoochee River as its sole local surface source. Around the city, much of the metro is served by county systems with their own sources and their own reports. Some draw on the same river as Atlanta, as DeKalb County does, while Gwinnett County's water comes from Lake Lanier and Cobb County's system buys its water from the Cobb County-Marietta Water Authority. In the north, Fulton County's system covers Alpharetta, Johns Creek, Milton and Roswell.
The name printed on the water bill settles which system is yours, and each utility posts its annual water quality report on its own site. For City of Atlanta customers, the reports are on DWM's water quality reports page, where the 2025 Water Quality Report states that the system met all EPA standards with no violations. County reports for 2026 arrived in early summer; DeKalb County's, for example, came out on June 26, 2026 and covers testing carried out through 2025.
For the survey sheet, one line from the report is worth copying: the disinfectant. Chlorine is the disinfectant listed in DWM's 2025 report and in the 2026 county reports for DeKalb, Fulton and Gwinnett. It is also the source of the familiar treated-water taste that a carbon stage in front of an RO membrane is built to address. Seasonal taste and odor changes in fall and spring are a separate matter, linked by DWM to naturally occurring compounds called MIB and geosmin, which it states are not harmful and treats at the plant with powdered activated carbon. Noting the season when any taste change shows up at your tap is a useful addition to the sheet.
The Survey Sheet, Stop by Stop
Walk the kitchen in this order, starting with the paperwork and ending with the fridge line. Fill in each line as you go; measurements are in inches.
| Survey stop | What to record | Atlanta or Georgia note |
|---|---|---|
| Water bill | Utility name, report year and disinfectant | DWM, DeKalb, Fulton, Cobb and Gwinnett each publish their own annual report |
| Cold shutoff valve | Location; whether it turns and closes fully; outlet size | |
| Sink deck and countertop | Spare holes and their diameter; countertop material | |
| Drain pipe | A reachable section of the sink drain pipe and which side of the cabinet it is on | |
| Outlet under the sink | Location, free socket, whether it has its own TEST and RESET buttons, whether a wall switch controls it | See the electrical section below |
| Garbage disposer | Present or not; which outlet it uses | |
| Clear space beside the trap or disposer | Width, depth and height of the open area, measured from the nearest fixed obstacle such as the trap, disposer, pipes or door frame | |
| Cabinet floor | Whether that area is flat and free of a lip or cutout | |
| Front access | The open floor between the door opening and the front of the chosen spot, and anything in that space, such as bins, a center stile or pipes | |
| Tube path | Route from the chosen spot to the cold valve, faucet hole and drain pipe, with each corner noted | |
| Refrigerator | Distance from the sink cabinet to the fridge's water inlet, if a fridge line is planned |
For comparison, the Viomi V8 PRO body measures 5 × 16.3 × 12.8 inches (width × depth × height) and sits level on the cabinet floor. Writing each clear space as width × depth × height, in that order, keeps the comparison straight. Noting a center stile, a pull-out bin or a pipe in front of the chosen spot shows which side of the trap gives the unit the easiest reach.
The Outlet Under the Sink and Georgia's Electrical Code
Georgia's current state minimum codes, adopted by the Department of Community Affairs, include the 2023 National Electrical Code with Georgia amendments, effective January 1, 2026. In the Georgia-amended section 210.8(A), dwelling receptacles installed within 6 feet of the top inside edge of a sink bowl require ground-fault circuit-interrupter protection, and so do kitchen receptacles that serve the countertop. The same set of state codes adopts the 2024 International Plumbing Code with Georgia amendments, on the same January 1, 2026 effective date.
The Viomi V8 PRO and the other Viomi RO units plug into a GFCI-protected circuit, the kind of outlet Georgia's sink rule describes. On the survey sheet, note whether the outlet under the sink has its own TEST and RESET buttons, the visible mark of a GFCI receptacle.
The other line to fill in is the switch: note whether a wall switch controls the outlet and, in a cabinet with a garbage disposer, which outlet the disposer uses. The purifier plugs into its own dedicated outlet with constant power. Where the cabinet has two outlets, or one duplex outlet with a switched half, the sheet marks which socket follows the switch and which one stays on.
Drain, Valve and Countertop Notes
The drain stop is about access. The drain saddle fits over a 1/4-inch hole in the drain pipe, so look under the sink for a reachable stretch of that pipe, and write down the pipe material you can see and which side of the cabinet that stretch is on. Where a double-bowl sink has a disposer on one side, note which bowl's drain pipe is easier to reach.
At the cold valve, turn the handle off and on once and note how it behaves. The feed adapter connects to the valve outlet, and both the kitchen faucet's cold hose and the purifier's inlet tube connect to it, so the main faucet keeps its supply. Two more details belong on that line: whether the handle is a round multi-turn knob or a quarter-turn lever, and the size of the valve outlet where the faucet hose connects.
On the countertop, the useful measurement is the diameter of any spare hole. A soap dispenser or side sprayer that is no longer used leaves an opening that the Viomi V8 PRO drinking faucet can use when it measures between 1 inch and 1.5 inches, and a spot on the same side of the cabinet as the unit keeps the tube runs short.
For the Viomi V8 PRO, the feed water adapter, drain saddle, tee fitting, tubing and drinking faucet come in the box, and the step-by-step video for the model walks through the installation from unboxing to setup.
Where the Fridge Sits
Kitchens that plan to send RO water to a refrigerator or ice maker need one more line on the sheet: the route from the sink cabinet to the fridge's water inlet, measured along the back of the base cabinets or through the floor or wall it would follow. The Viomi V8 PRO supplies a separate line to a compatible refrigerator or ice maker through standard tubing, and a fuller explanation of feeding a fridge from an under-sink system is in the guide to water filters for refrigerators and ice makers.
FAQ
How do I know whether my home is on City of Atlanta water or a county system?
The utility name on the water bill answers it. Metro Atlanta has several water systems, including City of Atlanta DWM and the DeKalb, Fulton, Cobb and Gwinnett county systems, and each one publishes its own annual water quality report.
Where is the disinfectant line in the City of Atlanta report?
In DWM's 2025 Water Quality Report, chlorine appears in the results tables with its highest monthly average and the range measured. Copying the word chlorine and the report year onto the sheet is enough for the survey.
Does the hot water valve matter for the survey?
The RO unit connects to the cold supply only, so the hot valve goes on the sheet as part of the plumbing to measure around. Its position on the back wall can narrow the clear space on that side of the trap.
Should the survey be done with the sink cabinet emptied?
Emptying the cabinet makes every stop easier to see and measure: the valve handles, the drain pipe, the outlet and the floor area beside the trap. Bins and cleaning supplies can go back once the clear space and tube path are written down.
Does an island sink change the survey?
The stops are the same. In an island cabinet, the outlet, the drain pipe and the cold valve can sit in different spots than along a wall, so the lines for outlet location, drain side and tube path carry more weight, and the sheet records them the same way.
Can I complete the survey before choosing a model?
The kitchen lines describe your house, so they can be filled in first and matched to a unit's figures once a model is picked.
Taking the Survey Sheet to Installation Day
Kept with the water report, the finished sheet goes to installation day as the map of the cabinet: where the valve, drain stretch, outlet and faucet spot are, and which side of the trap the unit will stand on.
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