In San Tan Valley, wastewater service comes from EPCOR, which took over the former Johnson Utilities system, even in areas where the Town of Queen Creek supplies water. The drain line from your house to EPCOR's sewer is private, and a plumber repairs it. Call the number on this page to be connected with a local plumber in San Tan Valley.
San Tan Valley at a glance
San Tan Valley was desert and farmland in northern Pinal County until rapid growth after 2000 turned it into a string of planned communities, and in 2025 it became an incorporated town. EPCOR's San Tan Wastewater district handles sewer service here and treats flows at the enclosed Copper Basin Water Reclamation Facility. Because nearly all homes are from the 2000s building boom or later, sewer lines are almost always plastic. That rules out rust, but not the problems newer pipe runs into: trench backfill that settled and left a low spot, a joint pulled apart during pool or patio work, or pipe cracked under a driveway.
What to do now
- Stop running water in the house, including the dishwasher and washing machine.
- Look outside. If a manhole is overflowing or several neighbors have backups, contact EPCOR Customer Care at 1-800-383-0834.
- If only your home is affected, locate the outdoor cleanout cap, usually near the foundation on the side facing the street, and keep the area clear.
- Keep children and pets out of any affected bathroom and don't use bleach or drain chemicals in standing sewage.
- Call to be connected with a local plumber, and note which drains are backing up and when it began.
Symptoms and likely causes
| What you notice | Likely cause |
|---|---|
| Tub or shower fills when the toilet flushes | Main building sewer blocked downstream |
| Same clog returns within weeks | A sag holding debris, or roots at a loose joint |
| Gurgling drains across the house | Partial blockage restricting air and water flow |
| Wet or sunken spot in the front yard | Broken or separated pipe leaking into soil |
| Backup right after a pool or patio project | Pipe damaged during excavation |
Cost factors
- Depth of the line and where along it the damage sits
- Pavers, concrete, artificial turf or a pool deck above the pipe
- Cleaning only, a spot repair, lining or replacing a section
- Whether the home has a reachable cleanout
- Restoring rock, turf or irrigation lines once the work is done
- Permits: the Town of San Tan Valley now oversees building, with Pinal County providing permitting and inspection services under intergovernmental agreements
Sewer Line Repair questions in San Tan Valley
How do I find out who provides sewer service at my address?
Can the sewer line on a newer house still fail?
Do I need a permit for a sewer line repair here?
What happens to my yard, pavers or driveway during a sewer repair?
More plumbing services in San Tan Valley
Sewer Line Repair nearby
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