Plumbing prices in Covina depend on the job, the access, the City permit and the age of the house. This guide gathers published cost ranges, explains what pushes Covina jobs up, and includes a quick estimator.
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Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
This Old House puts a typical Covina plumbing repair at $102 to $339. National 2025 and 2026 estimates put a tank water heater replacement at $600 to $2,500, a single drain clog at $147 to $345 and a sewer line replacement at $1,388 to $5,323. Handout #12 upgrades, permits, galvanized pipe and roots in the lateral push Covina jobs higher. Call (626) 746-1970 for an exact quote.
This Old House's Covina plumbing page says plumbing repairs fall between $102 and $339, based on quotes from local plumbers, with larger jobs following the wider published ranges below.
That Covina range covers the everyday calls: a running toilet, a dripping faucet, a slow sink. It does not cover a new water heater, a sewer lateral or a repipe. Those jobs have their own published ranges, listed in the next section. Call (626) 746-1970 for an exact quote.
We publish ranges, not single "average" prices. An average hides the things that actually set your price: where the equipment sits, what the City permit requires, whether the house still has its original pipe, and whether roots have moved into the sewer lateral. A range tells you what is normal. The written quote tells you what your job costs, and you get it before any work starts.
These are national estimates from the cost guides cited in each row, checked in October 2026; they are not quotes and not our prices, but they help you sanity check a bid.
| Job | Published range | Source and data year |
|---|---|---|
| Tank water heater replacement | $600 to $2,500 | Angi, 2025 |
| Tankless water heater installation | $1,404 to $3,901 | Angi, 2026 |
| Drain cleaning, single clog | $147 to $345 | HomeAdvisor, 2025 |
| Main sewer line clearing | $100 to $800 | HomeAdvisor, 2025 |
| Sewer line camera inspection | $275 to $1,800 | Angi, 2026 |
| Hydro jetting | $350 to $600 | Angi, 2026 |
| Slab leak detection | $150 to $600 | HomeAdvisor via Angi, 2024 |
| Slab leak repair | $630 to $4,400 | HomeAdvisor via Angi, 2024 |
| Whole-house repipe | $1,500 to $15,000 | Angi, year not stated |
| Toilet installation | $224 to $533 | HomeAdvisor, 2025 |
| Faucet replacement | $161 to $364 | HomeAdvisor, 2022 |
| Garbage disposal installation | $150 to $950 | This Old House, 2026 |
| Gas line installation | $272 to $936 | HomeAdvisor, 2025 |
| Sewer line replacement | $1,388 to $5,323 | Angi, 2026 |
A few per-unit figures from the same sources help with bigger jobs. Angi puts sewer line replacement at $60 to $250 per foot, with trenching adding $4 to $12 per foot. HomeAdvisor lists gas leak repairs at a stove junction at $120 to $250, leaks inside walls or crawl spaces at $270 to $760, and buried gas lines at $1,500 to $5,000. For repipes, Angi lists PEX pipe at $0.40 to $2 per foot and copper at $2 to $8 per foot, materials only. Call (626) 746-1970 for an exact quote.
Pick a job and a few details about your home to see where it is likely to land within the published range; the real price is the written quote you approve before work starts.
Published cost range for this job
These are published third-party ranges, not our prices and not a quote. For an exact quote, call (626) 746-1970. You get a written price before any work starts.
The estimator uses the national ranges above. It cannot see your water heater closet or your sewer line, so treat its result as a starting point for a conversation, not a bid.
Four things move Covina jobs toward the top of a published range most often: the City's Handout #12 water heater upgrades, permits and inspections, galvanized pipe in older homes, and tree roots in the sewer lateral you own.
Since January 1, 2026, Covina's Handout #12 sets the rules for every water heater replacement under the 2025 California Plumbing Code. Many older installs need two seismic straps, a relief drain run outside, a gas shutoff, a new flex connector, a sediment trap, an 18-inch stand in the garage and a drain pan. Each is a part and labor on the bill.
Covina Building and Safety at 125 E College St issues permits in person, with no online portal, and most are issued over the counter. Inspections are requested by email, and no work may be covered before it is inspected. That means a return trip on many jobs. See the Covina permit guide.
The City's Housing Element says about two-thirds of Covina homes were built before 1970. Homes from that era were often plumbed with galvanized steel, which rusts from the inside. Fixing one leak can turn up the next, and a repipe moves into the $1,500 to $15,000 range Angi publishes.
The City of Covina says the property owner maintains the sewer lateral from the house to the public main, roots included. Mature trees and older pipe mean repeat clogs, camera work and sometimes replacement. Call (626) 746-1970 for an exact quote. See the sewer lateral guide.
Two quotes for the "same" job can be far apart because they include different work, so here is what a complete scope looks like for the most common Covina jobs.
A full replacement in Covina includes draining and removing the old tank, the new unit, the permit, and the Handout #12 items: two 1 1/4 inch, 16-gauge seismic straps in the upper and lower thirds of the tank, with the bottom strap at least 4 inches above the controls; a temperature and pressure relief drain that runs outside and ends 6 to 24 inches above grade; a gas shutoff, an approved flex connector and a sediment trap; an 18-inch stand in a garage; and a drain pan. The permit can be pulled by a C-36 contractor or an approved owner-builder. The U.S. Department of Energy says tank heaters typically last 10 to 15 years, so a tank in that window is worth pricing before it fails. Angi's 2025 range is $600 to $2,500. Call (626) 746-1970 for an exact quote. See water heater repair and replacement.
Going from a tank to tankless is more than a swap. Many homes need a larger gas line, new venting, a condensate drain for high-efficiency units, an outlet, and isolation valves so the unit can be descaled. In Covina's very hard City water, those valves matter. Angi's 2026 range is $1,404 to $3,901. See tankless water heaters.
Clearing one slow sink is a short visit, within HomeAdvisor's $147 to $345 range. A main line stoppage that keeps coming back needs a camera to find out why: roots, a sag, a broken joint or kitchen grease. Hydro jetting, $350 to $600 in Angi's data, scours the pipe wall instead of punching a hole through the clog. Camera first, so you pay for the right fix. See drain cleaning and sewer lateral camera and repair.
Leak costs have two parts: finding it and fixing it. Electronic detection, $150 to $600 in HomeAdvisor data published by Angi, locates the leak before anyone cuts a floor. The fix, $630 to $4,400 in the same data, may be a spot repair, a reroute through the attic or walls, or a repipe if the pipe is failing in many places. Flooring repair is usually separate. See leak detection and slab leaks.
Angi's $1,500 to $15,000 range is wide because houses are. The number of bathrooms, one or two stories, PEX or copper, and how much drywall must be opened and patched all move the price. Ask whether wall patching is included. In a pre-1970 Covina home with galvanized supply pipe, a repipe also ends the cycle of rusty water and pinhole leaks. See whole-house repiping.
HomeAdvisor's 2025 range for a new gas line is $272 to $936. Running a line for a range or dryer is simpler than upsizing the whole system for a tankless heater. If you smell gas, leave the house first and call SoCalGas at 1-800-427-2200 from outside. See gas line plumber.
These examples show how a real job is put together in the kinds of homes common in Covina, using the published figures above, not our prices.
The tank is past 12 years and leaking at the bottom seam. It cannot be repaired. The job is a new tank plus the Handout #12 items the old install never had: two straps, a relief drain to the outside, a sediment trap, a new connector, a stand and a pan, with a permit and inspection. Angi's range is $600 to $2,500, and the upgrades push an older install toward the upper end. Call (626) 746-1970 for an exact quote.
A home with original galvanized supply pipe has weak pressure, rusty water first thing in the morning and another leak. A spot repair fixes today's leak but not the pipe. A repipe falls in Angi's $1,500 to $15,000 range, with PEX at $0.40 to $2 per foot and copper at $2 to $8 per foot for materials. Call (626) 746-1970 for an exact quote.
The main line backs up every few months. Clearing it falls in HomeAdvisor's $100 to $800 range. A camera inspection, $275 to $1,800 in Angi's data, shows roots at a joint in the lateral, which the owner maintains in Covina. Lining or replacing the damaged section moves into Angi's $1,388 to $5,323 range. Call (626) 746-1970 for an exact quote.
In Covina the owner pays for the plumbing in the house and the sewer lateral out to the public main, the City maintains local sewer mains, the Los Angeles County Sanitation Districts own the trunk sewers, and your water supplier owns the meter and the street side.
| Part | Who maintains it | Who to call |
|---|---|---|
| Pipes, fixtures and water heater in the house | Property owner | A licensed plumber |
| Water line from the meter to the house | Property owner | A licensed plumber |
| Water meter and street-side main | Your water supplier | The supplier on your bill; City customers 626-384-5220 |
| Sewer lateral from the house to the public main, roots included | Property owner | A licensed plumber |
| Local sewer mains | City of Covina Public Works | 626-384-5220 |
| Trunk sewers | Los Angeles County Sanitation Districts | LACSD |
Homeowners policies differ, so read yours or ask your agent: does it cover sudden water damage, the cost to find a leak and open a floor, and does it exclude wear, corrosion or slow leaks? Home warranty plans often cover a water heater but exclude code upgrades, permits and anything outside the house, like the lateral.
Census figures for 2019 to 2023 show 57.3 percent of Covina homes are owner-occupied, so a large share are rented. In a rental or condo, the lease or the association documents decide who pays for which pipe. We write up what we find with photos so the owner, the tenant and any insurer work from the same facts. Our who to call guide has every number.
Compare written scopes, not bottom lines: a low quote that skips the permit or the Handout #12 items is not the same job.
"Replace water heater" is not a scope. "Replace 50 gallon gas tank with two straps, relief drain to the outside, gas shutoff, flex connector, sediment trap, stand, drain pan, City permit and haul away" is.
Permit fee, code upgrades, disposal of old equipment, wall patching, cleanup and warranty. Missing items are the usual source of a higher final bill.
Covina inspections are requested by email, and work cannot be covered before inspection. Ask who sends the request and who meets the inspector.
A good contractor stops and gets your approval before the price changes.
Look up the C-36 license at cslb.ca.gov. California caps a home improvement down payment at 10 percent or $1,000, whichever is less. See how to check a plumber's license.
Most savings come from small, regular maintenance and from replacing aging equipment on your schedule instead of after it fails.
A real person answers 24 hours a day. You get an honest arrival window and a written price before any work starts.
This Old House lists plumbing repairs in Covina at $102 to $339, based on quotes from local plumbers. Larger jobs such as water heaters, sewer laterals and repipes follow wider published ranges. Call (626) 746-1970 for an exact quote; you get a written price before work starts.
Angi's 2025 national range for a tank water heater replacement is $600 to $2,500. In Covina, the permit and the Handout #12 items, such as two seismic straps, an outside relief drain and a sediment trap, often push older installs toward the top. Call (626) 746-1970 for an exact quote.
Angi's 2026 range is $1,388 to $5,323, or $60 to $250 per foot. Depth, length, access and roots change the price. In Covina the owner maintains the lateral to the public main, so the bill is yours. Call (626) 746-1970 for an exact quote.
Angi lists a whole-house repipe at $1,500 to $15,000. About two-thirds of Covina homes were built before 1970, and many still have galvanized pipe. Size, stories, PEX or copper and wall patching set the price. Call (626) 746-1970 for an exact quote.
HomeAdvisor's 2025 range is $147 to $345 for a single clog and $100 to $800 for a main line. Angi lists hydro jetting at $350 to $600 and a camera inspection at $275 to $1,800. Call (626) 746-1970 for an exact quote.
Yes, a permit fee and an inspection visit are part of permitted work. Covina requires a permit for every water heater replacement and for most plumbing changes, issued in person at 125 E College St. See our permit guide.
Because an average hides what sets your price: access, the permit, Handout #12 upgrades and the condition of older pipe. We show published ranges so you can budget, then give you an exact written quote. Call (626) 746-1970 for yours.
For home improvement work, no more than 10 percent of the contract price or $1,000, whichever is less, unless the contractor has a blanket performance and payment bond on file with the CSLB. See how to check a plumber's license.
Facts on this page come from these public sources, checked November 1, 2026.