Plumbers Serving Monrovia, CA: Drains, Leaks and Old Pipes

Monrovia is about 3.3 miles from Arcadia, one of the closest towns on our dispatch network, with both of its ZIP codes, 91016 and 91017, on the same line. Tell the dispatcher what is wrong and the job is routed to your address. Same-day calls are possible when the schedule allows, and the dispatcher says so on the phone.

Monrovia’s Old Town is a historic downtown district, which makes the plumbing of older buildings a question worth raising on the call. The sections below cover urgent calls, drain cleaning, the other repair work, what the City reports about its sewer and what a plumber should know about the ground before digging.

Monrovia ZIP codes served by this dispatch network

Monrovia’s two ZIP codes are both covered.

• 91016
• 91017

Emergency plumber in Monrovia: a 24 hour plumber and same-day help

Water spraying from a pipe, a sewer backup in a tub or floor drain, a heater leaking onto a garage floor and a gas smell are the calls to make at any hour. The line is staffed around the clock, and a plumber is routed to you when you call. The steps while you wait: close the main valve for a leak, stop running water for a backup and leave the house first for gas.

For a gas smell, phone SoCalGas at 1-800-427-2200 from outside before calling us. Burst pipes and frozen pipes are covered under repiping an older home. How night, weekend and same-day calls are handled is described on the dispatch line overview.

Drain cleaning in Monrovia: from a slow sink to a backed-up main

A slow kitchen drain is usually grease in the trap or the branch, and a cable clears it. Tubs and showers back up with hair and soap, which a drain auger lifts out. When several fixtures slow together, or a lower floor drain gurgles, the blockage is probably in the main line, and drain cleaning moves to a heavier cable or to hydro jetting.

The clogged drain service explains each method. In Monrovia, as anywhere, the part to ask about is what the plumber found: grease, roots, a collapsed section or a worn joint. A camera inspection after clearing shows the pipe, and the recording tells you whether to expect another backup. Commercial drain cleaning for a restaurant or shop is handled too; see plumbing for businesses.

Faucets, leaks, heaters and the rest of the work

• Faucet and toilet repair: drips, running toilets and weak flush, on the fixture repair page.
• Leak detection: water-meter testing and listening gear locate hidden leaks; see leak detection.
• Gas line repair: leak checks, new runs and appliance hookups on the gas line page.
• Water heaters: repair, replacement and tankless installation.
• Repiping: repeated leaks on old lines, including copper repiping, on the repiping page.

Sewer line work and slab leaks follow the same steps as elsewhere on the network: see main sewer line work and slab leaks. Garbage disposals, water damage, water lines and water softeners complete the list, all on the services overview.

Plumbing for historic homes in Monrovia

Old Town is Monrovia’s historic downtown district along Myrtle Avenue, and the city also has the Upton Sinclair House and a 1926 Santa Fe depot among its landmarks. If your house is historic or simply old, tell the plumber before the visit. Ask how walls will be opened, whether original fixtures can be kept and how the plumber will protect plaster and floors.

Older plumbing often has more than one material in the same house, because parts were replaced over time. We found no source naming a typical pipe for Monrovia, so ask the plumber to identify what you have. A plumber familiar with older homes should be willing to explain why a repair holds or why a section should be replaced, and to leave you with notes about what was found.

Who maintains the sewer in Monrovia

The City of Monrovia owns, operates and maintains the public sanitary sewer collection system. The page is silent on septic systems, so nothing is claimed about them here. The practical step is to ask Public Works before assuming which side of the line a problem is on.

The City of Monrovia owns, operates and maintains about 92 miles of public sewer, in pipe from 6 to 24 inches in diameter. The page does not say who owns a house lateral, so ask the plumber to find where the public line begins.

A sewer camera inspection shows where a blockage or break sits. If it is in the street main, call the City; if it is in the pipe leading from your house, the repair is a plumber’s job. See sewer line problems for the options once the location is known.

What the ground in Monrovia means for underground lines

The City’s General Plan Safety Element states that the western San Gabriel Valley, including Monrovia, is underlain by Holocene and Pleistocene alluvium up to 5,000 to 6,000 feet thick, at the southern face of the San Gabriel Mountains. It does not discuss foundations or pipes, and the thickness figure covers the western valley as a whole, so it says nothing about the condition of a line.

What affects an underground line is how and when it was laid, the pipe material and any damage since, so a plumber needs to look at the pipe, not at a soil map. Two business days before any trench, 811 gets called, and ask the plumber what the pipe looked like when the ground was opened.

Monrovia parks, roads and civic sites

Park and library names are an easy way to describe where you are. Monrovia places below were checked against city and county pages.

• Old Town, Myrtle Ave between Olive Ave and Foothill Blvd (Neighborhood)
• Library Park, 321 S Myrtle Ave at Lime Ave (Landmark)
• Monrovia Public Library, 321 S Myrtle Ave (Landmark)
• Monrovia Canyon Park, 1200 N Canyon Blvd (Landmark)
• Recreation Park, 779 E Olive Ave (Landmark)
• Julian Fisher Park, 915 S California Ave at Almond Ave (Landmark)
• Lucinda Garcia Park, 502 W Olive Ave at Mayflower Ave (Landmark)
• Canyon Oaks High School, 148 W Duarte Rd (Landmark)
• Upton Sinclair House, 464 N Myrtle Ave (Landmark)
• 1926 Santa Fe depot, near the Myrtle Avenue Metro A Line station (Landmark)

Monrovia on the map

The map centers on Monrovia, CA.

Towns around Monrovia on the network

Neighbors that share the line each have a page.