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A plumber can install a pipe, but a WQA-certified professional knows what filter media is required to remove specific contaminants identified in a lab report. Without this knowledge, you might buy an expensive whole-house system that fails to remove the specific chemical in your water.
We verify that our matched installers commit to using equipment certified by NSF/ANSI standards (like standard 53 or 58), guaranteeing that the filters actually do what the manufacturer claims.
The WQA credential separates general contractors from specialists in water quality.