While most of the Charleston metro area enjoys relatively soft water, Summerville stands apart. Drawing from the deep Middendorf Aquifer, Summerville's water tests at 5.5 grains per gallon - making it the hardest water in the greater Charleston area and a prime candidate for water softening.
Why Summerville's Water Is Different
Unlike Charleston, Mount Pleasant, and other coastal communities that draw surface water from rivers and reservoirs, the Summerville Commissioners of Public Works (CPW) taps deep groundwater from the Middendorf Aquifer. This 800-foot-deep geological formation produces water with significantly higher mineral content than the Edisto River surface water that feeds most of the metro area.
At 5.5 GPG, Summerville's water falls in the "moderately hard" category. For comparison, Charleston proper measures just 3.4 GPG. That difference means Summerville homes accumulate scale 60% faster and use measurably more soap and detergent.
The $43.5 Million PFAS Problem
Summerville CPW has committed $43.5 million to address PFAS contamination in its water supply. Per- and polyfluoroalkyl substances have been detected in the aquifer, likely from historical industrial and military activity in the area. The utility is working on treatment upgrades, but complete PFAS removal at the municipal level takes time.
In the meantime, a point-of-use reverse osmosis system is the most effective way for Summerville families to remove PFAS from their drinking water. RO systems achieve 93%+ removal of PFAS compounds, providing an immediate solution while the utility builds out infrastructure.
Summerville's Top Water Concerns
- Hardness at 5.5 GPG (highest in Charleston metro)
- PFAS contamination ($43.5M cleanup underway)
- Iron content causing orange staining
- Sulfur odor in some areas near Nexton and Cane Bay
Iron Staining in Summerville Homes
Groundwater from the Middendorf Aquifer contains dissolved iron that oxidizes when exposed to air, leaving orange-rust stains on fixtures, in toilets, and on laundry. This is especially common in newer developments like Nexton, Cane Bay, and Summers Corner that are furthest from the treatment plant.
Iron removal requires specialized filtration - a standard water softener alone won't fully address it. The Hydrotech BIF Series uses chemical-free oxidation to remove iron (up to 30 ppm), sulfur, and manganese without additives, making it ideal for Summerville's water profile.
Recommended Systems for Summerville
Because Summerville has the hardest water in the metro area, water softening delivers the biggest return on investment here. We typically recommend:
Hydrotech 89 Series Water Softener - Addresses the 5.5 GPG hardness, saving $479+ annually
BIF Series Iron Filter - Removes iron and sulfur without chemicals (for homes with staining issues)
Aqua Flo Tankless RO - Removes PFAS from drinking water while the $43.5M cleanup continues