Water Treatment & Softening
CSI Division 22, Plumbing
Equipment installed in a building's domestic water system to treat water quality issues at the source, water softeners to remove hardness-causing minerals, filtration to remove sediment, or chemical treatment systems, selected based on the specific water quality problem the building's incoming water supply actually has.
Why it matters
Specifying water treatment equipment without first testing the actual incoming water quality is a common, expensive mistake, since a softener sized for moderate hardness won't perform adequately against genuinely hard water, and treatment equipment specified for a problem the water doesn't actually have is simply wasted cost.
On a real project
A hotel's mechanical engineer specifies a water softener sized to the local water utility's published hardness data and the building's actual peak domestic water demand, rather than a generic unit sized for an average commercial building.
Who this matters most to
A Plumber installs the treatment equipment and connects it into the building's domestic water piping. A MEP Engineer specifies the system based on documented water quality testing.
Where this goes wrong
A mechanical engineer specifies a standard water softener without reviewing the specific site's actual water hardness data. Once occupied, the building's water remains noticeably hard, scaling water heaters and fixtures faster than expected, and the owner has to pay for a properly sized replacement system.
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