Big Dalton Wash, the dams and your property
Glendora has county flood-control works in its canyons. Big Dalton Dam sits at 2600 Big Dalton Canyon Road, and LA County Flood Control District rehabilitated its sluiceway for flood control, stormwater capture and groundwater recharge. Little Dalton Debris Basin had a seismic retrofit, and Big Dalton Wash got flood-control channel work through the WPA in 1940.
These structures manage canyon runoff, but they do not tell you whether your lot is in a flood zone. Check the FEMA flood map for your address, and ask the city about drainage on your street. If water has entered the house, call, and do not wait for the weather to pass.
When water is spreading in Glendora
Runoff, a burst line and a sewage backup are three different problems, and each starts with a different step. Our dispatch line is staffed around the clock, so a call at 3 a.m. is a normal call. Describe the source in plain terms.
The crew sets up extraction units first, then air movers and LGR dehumidifiers, and maps moisture with a meter and thermal camera. For a burst pipe in a wall, see our page on emergency water removal. Keep a list of what got wet for the adjuster.
If water is still spreading
Do what you safely can, in this order, and stop at any step that feels risky.
- Shut the mainClose the house main valve fully. If the water is coming from outside, sandbags or a rolled towel at the door buy a little time.
- Kill power to wet zonesFlip breakers for wet rooms only when the panel is dry and reachable. If there is any doubt, call the utility or 911 first.
- Pull valuables outTake photos, documents, medications and electronics to a dry room. Leave heavy furniture where it is and prop it up.
- Stay out of dirty waterRunoff and sewage can carry bacteria. Keep children and pets clear, and do not run a household vacuum on wet floors.
- Call the 24/7 lineTell us how the water entered, how deep it is and how long it has been there. That sets the water category.
Glendora water scenarios compared
Cause shapes both the cleanup and the insurance conversation. Treat this as a starting point, then ask your insurer.
| Situation | Typical category | Insurance angle (check your policy) |
|---|---|---|
| Supply line or water heater burst | Category 1, clean | Sudden and accidental damage is often covered |
| Slow leak behind a wall or under a sink | Category 1 to 2 | Long-term leaks are often not covered |
| Runoff or flood water entering a door | Category 2 to 3 | Flood is usually excluded, ask about flood coverage |
| Sewer or drain backup | Category 3 | Coverage varies, ask your insurer |
Photograph the water, the source and the damage before cleanup starts.
Call the dispatch line and tell us what you see. A crew can be sent day or night.
Glendora's city water, sewer and permits
Glendora's city page describes a city-run water system with 224 miles of mains and about 13,000 meters. If the leak is at the street or the meter, start with the city Water Division. Anything past the meter is yours.
The sewer system is maintained primarily through the LA County Consolidated Sewer Maintenance District. A backup that hits several homes is a report to the city and the district. A single-home backup is more likely your own pipe.
Building and Safety is at 116 E. Foothill Blvd, with permits through the Civic Access portal. Ask what a rebuild needs. California requires a contractor licence at $1,000 or with a permit, and the CSLB site lets you check one before you sign. Water damage repair follows once drying is complete.
Glendora ZIP codes
Glendora has two ZIP codes, 91741 and 91740, and both list Glendora as the preferred city. City Hall and the Building and Safety office on East Foothill Boulevard use 91741, which also covers the much larger land area. Call with your street address and we will confirm coverage.
Glendora service area map
Glendora water damage questions
Yes. Our dispatch line answers 24 hours a day, every day, including holidays. We do not promise an arrival time because conditions and call volume change. While you wait, shut the main valve and move valuables to a dry room.
Yes, both 91741 and 91740. City Hall on East Foothill Boulevard is in 91741, the larger of the two by land area. Tell us your street address and we confirm the crew can reach you.
No. County dams, debris basins and washes manage runoff, but your lot's flood status comes from the FEMA flood map for your address. Check it, and ask the city about drainage on your street.
Glendora's city Water Division, per the city's website. Leaks after the meter are the homeowner's job. If you are not sure where the leak is, close your main valve and see if it stops.
Standard homeowners policies usually do not cover flood. Sudden and accidental water damage inside the house is often covered. Ask your insurer what your policy says and keep your photos and receipts.
A typical loss dries in a few days, and the crew checks the walls each visit before pulling equipment. The crew rechecks moisture readings each visit and adjusts the equipment. Wet drywall and insulation may be removed if they cannot dry in place.
No. Sewage is Category 3 and carries bacteria. Keep people and pets out and call a crew with protective gear. Health questions belong with a physician.