Most San Tan Valley businesses get water and sewer from EPCOR, though the Town of Queen Creek supplies water only to some areas, and building permits now run through the Town of San Tan Valley with Pinal County providing building safety services. Hard groundwater is the local factor that wears on commercial equipment. Call the number on this page to be connected with a local plumber in San Tan Valley.
San Tan Valley grew quickly from desert and farmland into planned communities, and its commercial buildings are mostly recent: retail pads, medical offices, schools and HOA amenity centers. The plumbing in them is newer, but the water is hard and the utility picture depends on the address.
What to do now
- Close the nearest fixture valve or the building main if water is spreading.
- If anyone smells gas, get everyone out first. Then call 911 and the gas utility from outside. Properties on City of Mesa gas in its Magma service area use 480-644-4277; other properties should call the utility on their gas bill.
- For a break at the meter or a public sewer problem, call EPCOR Customer Care at 1-800-383-0834 if EPCOR serves the building. Properties on Town of Queen Creek water call Queen Creek for water issues.
- Stop running water into a drain that is backing up, including dish machines and floor sinks.
- Note which fixtures, suites or restrooms are affected and when it started.
Symptoms and likely causes
| Symptom | Likely cause |
|---|---|
| Water heater rumbles and runs out early | Sediment and scale from hard groundwater |
| Ice machine or coffee equipment slowing down | Mineral buildup in lines and valves |
| Restroom flush valves sticking or running on | Worn diaphragms or scale on internal parts |
| Kitchen or floor drains gurgling | Grease or debris narrowing the line, or a venting issue |
| Wet area near the meter box | A leak on the service line or at a fitting near the backflow device |
Cost factors
EPCOR's San Tan system runs entirely on groundwater and reports hardness of 15 to 18 grains per gallon, so descaling, filtration or softening for equipment often comes up alongside the repair itself. EPCOR, which took over the former Johnson Utilities systems, also handles wastewater here and operates the Copper Basin reclamation facility. EPCOR keeps a service line material inventory you can view at epcor.com/safety.
Permits can affect timing. San Tan Valley incorporated as a town in 2025 and took over zoning and building processes from Pinal County, with the County providing plan review, permitting and inspection under intergovernmental agreements. Permits the County issued before the change stay with the County through closeout. Contacts are Pinal County at 520-509-3555 and Town staff at 520-866-8239 or 520-866-8240. Other cost factors include after-hours scheduling, access through slab or finished walls, how many tenants share the line and whether backflow parts need replacing. Ask your water provider what its cross-connection rules require for your property.
Commercial Plumbing questions in San Tan Valley
How can we tell which utility supplies water to our building?
Does our address fall under a town building department or the county?
How does hard water affect water heaters, ice machines and dish machines?
What should staff do if they smell gas inside the building?
More plumbing services in San Tan Valley
Commercial Plumbing nearby
Helpful guides
Sources
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