Plumbing trouble follows the work calendar
Commerce has a commercial and industrial base, and the homes that sit among it are residential pockets, not a single neighborhood. Different buildings fail at different times. A shop that closes for a long weekend can return to a flooded back room, and a unit that sat idle can have a heater that will not relight.
Before a busy stretch, a short plumbing check costs less than a shutdown. After a quiet one, check the floor and the heater before the first shift. If you find water, the 24/7 line at (562) 488-9614 is how you get a crew moving.
A reopening check after a long weekend or idle stretch
Ten minutes at the start of the day can catch a slow leak.
- 1
Walk the floors
Look near restrooms, break rooms and the water heater for wet spots, stains or a musty smell.
- 2
Check the meter
Read it, wait a couple of hours with nothing running, and read it again. Any movement points to a leak somewhere.
- 3
Run each drain
Flush toilets and run sinks and floor drains. Slow or gurgling drains suggest a partial blockage building toward a backup.
- 4
Look at the heater
Check for drips at the base and for a pilot that has gone out. A relight that fails twice calls for a technician.
Found water when you opened up in Commerce?
Close the valve you can reach and ring the dispatch line. A crew leaves from Pico Rivera, and you see the price before work begins.
Commerce property types and what to schedule
Match your building to the plumbing task most likely to pay off.
| Property | Plan for | Where to start |
|---|---|---|
| Warehouse or production floor | Restroom lines, floor drains, hidden supply leaks | Commercial Plumbing |
| Shop or office | Heater failures, water bill spikes | Leak Detection |
| Mixed-use building | Shared main line backups | Sewer Line Cleaning |
| Home in a residential pocket | Aging water heater, slow drains | Water Heater Repair |
Median home age is 1957, so older residential pockets benefit from a look at original lines.
Commerce at a glance
The numbers and routes that shape a call from here.
Emergency dispatch around the clock
Night shift, graveyard shift, holiday weekend, the line stays open. Commerce is west-southwest of our base, about 6 miles away.
11,993 residents, 3,381 homes
The Census ACS 2024 count is small next to the city's commercial footprint, so many calls come from businesses and from people who work here.
Median year built 1957
72.9 percent of homes predate 1980. For a house, that means original supply and drain lines may still be in service and are worth a camera look if clogs repeat.
90040 and the 90023 side
90040 is the main Commerce ZIP and holds the Cal Water office at 2000 S Tubeway Ave. The 90023 side near the Commerce and East Los Angeles border is partly in our reach too.
Commerce water and heater scale
Cal Water's 2025 report for the City of Commerce water system says the company has served the area since 1985 and that supply is local groundwater plus purchased Metropolitan Water District water. Groundwater hardness ran 140 to 155 ppm, with an average of 146.
On Cal Water's scale, 75 to 150 is moderately hard and 150 to 300 is hard, so Commerce groundwater sits right at the boundary. Cal Water notes hard water can build up in pipes and water heaters, which is the reason to ask about a flush schedule on a tank that runs all day. See Water Heater Repair if yours is losing output.
Before we arrive: a burst pipe or active leak in a Commerce building
Four actions for the minutes before the crew pulls up.
Isolate the water
Shut the main or the nearest branch valve. For a leased unit, ask the manager where the master valve is.
De-energize wet gear
Turn off breakers feeding equipment and outlets near the water. Do not touch them while standing in it.
Protect what you can
Pull inventory, tools and electronics off the floor and away from the wet path.
Phone the 24/7 line
Tell dispatch it is an active leak and whether it is a business or a home. Use the emergency number at any hour.
What to tell dispatch from a Commerce shop or house
These details let us pick the right crew and tools.
- Business or residence, and who can sign for work.
- Which fixture is leaking, backing up or dead.
- Where the shutoff valves are and whether they are closed.
- Whether neighbors in a shared building are affected.
- Any access instructions for after-hours entry.
For bigger systems, Commercial Plumbing covers after-hours calls. Neighboring Montebello and Norwalk share the same dispatch line.
Standards and sources behind this page
Housing figures on this page come from the Census Bureau's American Community Survey, and the water figures from the Cal Water 2025 Commerce water system report.
Questions we hear most
We cover 90040, the main Commerce ZIP, which includes the Cal Water office on S Tubeway Ave. We also work the 90023 side near the Commerce and East Los Angeles border.
If your address sits right on that line, give it to dispatch at (562) 488-9614 and they will confirm.
Yes. Dispatch runs around the clock, including overnight and on weekends and holidays. Active leaks, sewage backups and failed heaters are treated as emergencies.
For a gas smell, leave and call SoCalGas at 1-800-427-2200 first.
Yes. Commerce is largely commercial and industrial, and we take both. Tell dispatch which one you are, because it changes who must authorize the work.
Do a reopening check on return and a pre-closing check before you leave. Shut off water to idle areas if your building allows it, and keep the 24/7 number handy.
Cal Water's 2025 report lists groundwater hardness of 140 to 155 ppm with an average of 146. That is moderately hard, close to the hard range. Your own tap result may differ, so test it.
Look for drips, scale noise and uneven temperature. Water Heater Repair can diagnose it, and if the tank is old, the conversation shifts to replacement.
Often, yes. Leak Detection uses listening and thermal tools to find the spot without opening large areas of wall.
Commerce, CA service area
Commerce plumbing on your schedule
Early shift, late shift or a closed weekend, our team at the 24/7 line answers. The price is explained before work starts.