Weekly Pool Service in Katy, Inside and Outside City Limits

Two water systems, one mailing address

A Katy mailing address can put you on either side of the city line. Inside it, the City of Katy system fills your pool. Outside it, across much of Greater Katy, the water comes from whichever municipal utility district serves your street. Two pools a few blocks apart can start from different calcium and alkalinity, so a neighbor's routine or the dose printed on a bottle is a poor guide for yours.

The source itself is moving. City water came entirely from aquifer wells in 2017, and groundwater limits meant to slow subsidence are moving the region toward water piped from Lake Houston, with a 2022 report projecting the full regional project for 2026 to 2028. Because every visit records a full set of readings, a change in what comes out of your hose shows up as a gradual drift across several weeks of notes, in hardness, alkalinity or a new combined chlorine reading, and the balancing follows it.

Grit and clippings instead of leaves

Katy was grassland and wetland before it was subdivisions, and most of the trees in its backyards were planted. With little canopy to catch it, wind carries mowed grass, seed heads and dust straight to the water. A leaf tends to ride the surface until the skimmer pulls it in. Debris this fine usually settles to the bottom instead, where it breaks down, eats into the chlorine and hands algae a foothold.

So a Katy visit leans on the brush and the vacuum more than the skimmer net. The floor, the steps and any tanning ledge get cleared every week, and the skimmer and pump baskets come out even when they look light, because fine material packs tight. Between visits, one easy habit helps: ask your lawn crew to blow clippings away from the pool, not across the deck toward it.

When rain raises the water line

A long rainy spell can push the water line above the skimmer opening. At that height the skimmer stops drawing from the surface, so floating debris stays put and the top of the pool barely circulates. The rain has also thinned whatever chlorine was there, and the first clear, hot day afterward uses up the rest quickly.

After a wet stretch, service day opens with a complete water test rather than a quick top-up, then lowers the level until the skimmer is pulling from the surface again. Only that much water comes out, since the ground around a Katy pool may still be saturated and an emptier shell has less weight holding it down.

Amenity pools across three counties

Much of Greater Katy is master-planned communities, and some include a pool in the amenity package; The Reserve at Katy, for example, has a recreation center and pool. An HOA can put that pool on the same weekly model as a backyard pool, with a set day and one technician, through our commercial pool service.

What differs is the paperwork around it. The city reaches into three counties, and much of Greater Katy is unincorporated land outside it, so which office permits an amenity pool depends on exactly where it sits. In unincorporated Harris County, the county health department requires a yearly permit for each separately filtered pool or spa and treats HOA pools as public or semi-public. State rules for those pools add more frequent testing and a written log the community keeps, so weekly service is one part of the plan rather than all of it.

What your Katy technician watches each week

• Clippings and grit settled on the bottom after windy or mowing days
• Water line height after a rainy week, measured against the skimmer opening
• Calcium hardness, alkalinity and combined chlorine as the fill water changes
• How much chlorine survived heavy rain
• Baskets packed tight enough with fine debris to slow flow