On a San Gabriel Valley route, every other week is enough to keep most backyard pools clear — if the chemistry is logged and the equipment is watched.
Why every other week works here
In many climates a stop every seven days is the default. In the San Gabriel Valley the sun is strong, but residential pools with a working filter, a covered spa, and a family that is not throwing daily pool parties stay balanced on a bi-weekly stop. We test, dose what that day actually needs, empty baskets, brush the tile line, and look at the pump and cleaner before we leave. The product is clear water on the days we are not there.
What we write down
Free chlorine, combined chlorine, pH, alkalinity, and a note on filter pressure. Salt systems get a cell reading. If combined chlorine is climbing, we shock on that visit instead of waiting for the water to go dull. Industry and public-health ranges still apply: free chlorine generally 1–3 ppm in a treated pool, pH 7.2–7.8. Numbers beat a guess from the truck.
How to get on the route
Send the address and a photo of the equipment pad if you have one. We would rather stand at the gate once than quote a number we cannot keep. The first two visits are with whoever runs the shop; after that the regular tech on your street takes the day.