What free chlorine means
Free chlorine is the chlorine in pool water that is still available to sanitize. Combined chlorine is chlorine that has already reacted and causes the chlorine smell.
Where it matters on a pool service job
Testing free chlorine on every visit and logging it is the core of pool service. A written test log protects you when a customer says the pool turned green on your watch.
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