Under-Sink and Whole-Home Systems
Water Filtration Installation in Roswell, GA
Carbon, reverse osmosis and whole-home filters chosen for what your Roswell water actually has in it, installed with a bypass and a filter-change plan.
- Start from your water report
- NSF/ANSI certified systems
- Free estimates
Your Water Source
Your bill tells you which provider you have.
Sound Familiar?
The Water Tastes Earthy Some Months, or Smells Like a Pool
Those are two of the usual reasons people start looking at filters. Neither means the water is unsafe. Both are fixable, and knowing where your water comes from makes the choice much simpler.
About 80 percent of Roswell gets its water from Fulton County, drawn from the Chattahoochee River and treated at the Tom Lowe Atlanta-Fulton County plant in Johns Creek. The rest is served by the Roswell Water Utility, which draws mainly from Big Creek and a groundwater well. Fulton County disinfects with chlorine (sodium hypochlorite), which is where a pool smell usually comes from. Fulton County has also explained that seasonal turnover in the Lake Lanier and Chattahoochee system raises two natural compounds, MIB and geosmin, that give water an earthy taste at tiny concentrations.
Water filtration installation means choosing a filter that targets what you want removed and installing it with a shutoff, a bypass and a realistic change schedule. Roswell 24/7 Plumbing installs filtration systems across Roswell in 30075 and 30076.
Choosing a System
Match the Filter to the Problem
The right filter depends on what you want out of the water.
| Goal | System type | Certification to look for | Notes |
|---|---|---|---|
| Remove chlorine taste and smell | Activated carbon, under-sink or whole-home | NSF/ANSI 42 | Most common request |
| Remove earthy taste in some months | Activated carbon | NSF/ANSI 42 | Same principle the treatment plant uses |
| Reduce a wider range of contaminants | Reverse osmosis at the kitchen sink | NSF/ANSI 58 | Also removes most fluoride |
| Specific health-related contaminant | Carbon block or RO certified for it | NSF/ANSI 53 or 58 | Check the listing for that contaminant |
| Sediment on a private well | Sediment pre-filter plus other treatment | Varies | Test the well first |
If your concern is hardness or scale rather than taste, filtration is not the tool. See water softeners, and note that most Roswell water already tests soft.
Not Sure Which Filter Fits?
Tell us what bothers you about the water and which provider you have.
What to Do Before Choosing a Filter
Five minutes of homework prevents buying the wrong system.
- Read your provider's report. Fulton County and the City of Roswell both publish annual water quality reports listing what was detected.
- Name the problem. Taste, smell, a specific contaminant or concern about lead from old household pipes are different goals with different filters.
- Check the certification. Look for the NSF/ANSI standard and the specific contaminant on the product listing.
- Plan the space. RO systems need room under the sink and a drain connection. Whole-home filters need a spot near the main.
- Budget for cartridges. Replacement filters are an ongoing cost. Factor them in before choosing.
If the house has old galvanized or lead-soldered copper, the pipe may matter more than the source. A repipe fixes the cause.
Cost
What Affects the Cost of a Filtration System
System type and location decide most of it.
Estimates for new systems are free. The Tom Lowe plant that treats Fulton County's water sits in nearby Johns Creek, so homes there have the same source water and the same filter options.
Want better-tasting water? Call (770) 214-4545.
Questions
Water Filtration Questions
Both of Roswell's water providers publish annual water quality reports showing compliance with state and federal drinking water standards. A filter is usually about taste, odor or a specific concern you have, not about making non-compliant water safe. Read your provider's latest report for the details.
Fulton County has explained that seasonal turnover in the Lake Lanier and Chattahoochee River system can raise levels of two natural compounds, MIB and geosmin, which cause an earthy taste even at very low levels and are not a health risk. The treatment plant uses activated carbon against them, and an activated carbon filter at the tap does the same job at home.
For drinking and cooking water, one under-sink carbon or reverse osmosis unit covers the need at a lower cost. A whole-home filter makes sense when you want treated water at every tap and shower, for example to reduce chlorine smell in showers or to protect fixtures on a well.
Standard activated carbon does not remove much fluoride. Reverse osmosis does. Fulton County adds fluoride as part of treatment, so if removing it matters to you, choose an RO system.
It depends on the filter and your water use. Most under-sink cartridges are changed every six to twelve months, and whole-home filters on a schedule set by the manufacturer. An overdue filter can grow bacteria and stop working, so keep a reminder.
Look for certification to NSF/ANSI standards for the specific contaminant you care about: NSF/ANSI 42 for taste and odor such as chlorine, 53 for health-related contaminants, and 58 for reverse osmosis systems. The certification should name the contaminant, not just the brand.
Sources for This Page
Fulton County's water source, treatment plant, corrosion control and seasonal MIB and geosmin explanation come from Fulton County Public Works' annual water quality reports and water quality page. City water sources come from the City of Roswell's 2024 water quality report. Filter certifications reference NSF/ANSI Standards 42, 53 and 58.
Written by the Roswell 24/7 Plumbing team and checked against the sources above. Last reviewed October 1, 2026.
Want Better Water at the Tap?
Choose a filter based on your actual water, not a sales sheet. Free estimates.
Call (770) 214-4545