What calcium hardness means
Calcium hardness is the amount of dissolved calcium in pool water. Too little and water can etch plaster; too much and it scales surfaces and equipment.
Where it matters on a pool service job
Scale on tile lines and heater problems often trace to calcium. Test it monthly and note it, especially in areas with hard fill water.
What it costs
The pool maintenance cost guide has the typical job at $270 and the usual range at $120 to $1,050. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Pool maintenance cost
- Tools, templates and guides: Free pool service resources