Alta Loma Plumbing
- 10722 Arrow Rte #812, Rancho Cucamonga, CA 91730
- (909) 944-6637
- September 15, 2026
A & J Plumbing Company is a licensed California contractor based in Colton, San Bernardino County, holding CSLB license #1031639 under classification C36 — Plumbing. License status at the time of compiling this listing: active, with no suspension recorded.
Plumbing contractors hold the C-36 classification, covering repipes, drain and sewer work, gas piping and water heater installation.
Working in the Inland Empire: Inland Empire summers are long and hot, and Santa Ana wind events each autumn put real load on anything attached to the outside of a building.
Before you hire any plumbing contractor: On a water heater replacement, confirm seismic strapping, the expansion tank and the venting are all included. Those are code requirements, not upsells.
License status can change at any time. Confirm license #1031639 is current, and check bond and workers’ compensation coverage, using the CSLB license lookup before signing a contract or paying a deposit.
This profile was compiled from California State License Board public records and is unclaimed — A & J Plumbing Company has not added its own details. Are you the owner? Claim this listing to add photos, services and a description of your work, or contact us to have it removed.
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