Katy is in Harris County, Texas. We do not yet hold septic record counts for Harris County, Texas; the county page has what we do have on file. 3 septic businesses on record with a Katy address, below.
Providers with a Katy address are on record in more than one county: mostly Harris County, and also Fort Bend County. Each county's records are held separately; see the county page for the one that matches the property.
Harris County, Texas publishes onsite-wastewater records. An account may be required.
3 businesses we have on record with a Katy address: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | Phone | Rating | Services |
|---|---|---|---|
| Katy Plumbing Service | (832) 225-8086 | 2.0 (4) | plumbing; water heater installation/repair; septic services |
| Apex Site Work & Land Clearing | (281) 706-5616 | 1.0 (1) | demolition services; excavation services; septic services |
| Septic Services Green | (281) 650-8100 | — | septic services |
Listing here is not an endorsement. We take no fee from any company on this page, we are not affiliated with them, and being listed does not mean the business is a customer of ours. Fields shown are limited to what we actually hold: no street address, hours or license numbers are shown unless we hold them, and none are invented.
Our map shows each parcel as septic, sewer, or unclassified, with the records we hold attached to the parcel.
We hold county-level septic and sewer classification, not a per-city breakdown. The figures on this page for Harris County, Texas are county totals, clearly labelled as such, not an estimate for Katy alone.
3 businesses on record with a Katy address in our directory: pumping, installation, design, inspection and repair.
Yes. You can generate and view a code-referenced septic design for a parcel at no cost: design flow from bedroom count, tank sizing, soil-driven drainfield area, dispersal method and setbacks.
Records for properties in Katy are held by Harris County, Texas.
Figures on this page were last verified 2026-08-31.