Toilets, faucets, showers, tubs, drains, and hidden leaks — repaired and installed by licensed San Diego plumbers. We fix the cause, not just the symptom, with clear upfront pricing and code-compliant workmanship.
The bathroom packs more plumbing fixtures into one small room than anywhere else in your home, and it takes more daily wear than any other space. That combination — constant use, frequent on-and-off cycling, and San Diego's very hard water — is why bathroom plumbing problems are so common here. Toilets, faucets, and shower valves wear out faster in San Diego because calcium and magnesium scale builds up inside the moving parts, and older homes in neighborhoods like North Park, City Heights, and La Mesa still run original galvanized supply lines and cast-iron drains that were never designed for today's water chemistry.
Small bathroom problems almost never stay small. A faucet that drips quietly or a toilet that runs can push your water bill up and waste hundreds of gallons a week. An under-sink leak can rot a vanity cabinet before you notice. A shower valve that leaks inside the wall can feed mold in the framing. Our licensed plumbers diagnose the actual cause, explain your repair and replacement options in plain language, and give you a written price before we start — so a minor fix stays minor.
Bathroom issues have a way of showing up at the worst time. We offer same-day and emergency service Monday through Saturday. Call (619) 637-5215 and we will get your bathroom back to normal fast.
From a single dripping faucet to a full bathroom remodel rough-in, we handle every part of your bathroom's plumbing system.
Running, leaking, weak-flushing, or constantly clogging toilets. We replace flappers, fill valves, wax rings, and flanges, and install water-saving toilets.
Toilet services →Dripping faucets, stiff handles, low flow, and under-sink leaks. We rebuild cartridges and O-rings or install a new faucet that fits your vanity.
Faucet services →Shower valves, diverters, tub spouts, and drains. We fix temperature swings and leaks, and upgrade to code-compliant anti-scald valves.
Fixture services →Water pooling under the sink, a damp wall, or a water bill that jumped? We locate hidden bathroom leaks without tearing apart the room.
Leak detection →Warm floor spots, cracked tile, or a running-water sound in a slab home. We detect and repair slab leaks beneath bathroom floors.
Slab leak repair →New sinks, faucets, showerheads, toilets, and tubs installed correctly the first time — leak-free, level, and up to code.
Installation →Rusty water or repeated pinhole leaks in the bathroom? We repipe failing galvanized or copper lines with modern PEX or copper.
Repipe services →Running out of hot water in the shower? We repair and replace tank water heaters so your bathroom has reliable, consistent hot water.
Water heater services →Endless hot water at every shower and tub. We install, descale, and repair tankless systems built for San Diego's hard water.
Tankless systems →Stop scale from destroying faucets, shower valves, and toilets. A whole-house softener protects every bathroom fixture in the home.
Water softeners →Slow or clogged sink, tub, and shower drains cleared with professional equipment that scours scale and debris from the pipe wall.
Drain cleaning guide →Upgrade to WaterSense faucets, showerheads, and toilets to cut water use without giving up performance or comfort.
Water conservation →These are the calls our San Diego plumbers run most often. If any of these sound familiar, you are not alone.
A constantly running toilet is usually a worn flapper or a fill valve that no longer seals, and it can waste hundreds of gallons a day without making a sound. Weak flushes often point to mineral buildup in the rim jets or a failing flush mechanism. We repair the toilet, or install a new efficient model when it makes more sense. Read more in our guide to common plumbing problems in San Diego homes.
Drips come from a worn cartridge, washer, or O-ring, often accelerated by hard water scale. A stiff or squeaky handle is usually the same problem inside the valve. We rebuild or replace the faucet so the drip stops for good and the handle turns smoothly again.
In San Diego, bathroom drains slow down because mineral scale roughens the inside of the pipe and grabs hair and soap scum. That is why clogs come back so quickly after a store-bought fix. Professional cleaning clears the scale and debris from the full pipe, not just the latest clog — see why drains keep clogging.
Weak pressure at one shower is usually scale blocking the showerhead or the cartridge. Weak pressure everywhere in the home points to a bigger cause, such as mineral-narrowed pipes or a failing pressure-reducing valve. Our guide to low water pressure in San Diego homes explains how to tell the difference.
Leaks under a bathroom sink come from worn shutoff valves, a damaged drain assembly, a loose P-trap, or a failing supply line. Left alone, that moisture warps and rots the vanity cabinet and can spread into the floor. We trace the source and repair it before damage spreads.
If the water goes hot and cold when someone flushes a toilet or runs the dishwasher, the pressure-balancing valve has failed or a pre-1990s two-handle setup is struggling. We replace it with a code-compliant anti-scald valve that keeps the temperature steady.
Mildew odor, bubbling paint, or a soft spot in the wall near the shower often signals a slow leak behind the tile or in the drain line. Hidden leaks like these are best found with professional leak detection before they reach the framing — learn the warning signs in our post on hidden water leaks in San Diego homes.
A warm spot on the bathroom floor, new tile cracks, or the faint sound of running water when everything is off can indicate a slab leak beneath the bathroom. Because the pipe runs under the concrete, these need professional detection and a targeted repair — see slab leak warning signs.
Whether you are refreshing a guest bath or gutting a primary bathroom, the plumbing is the part you never want to redo. We handle the rough-in and finish work so everything lines up, drains correctly, and passes inspection the first time.
Here is exactly what to expect when you call A&A Plumbing for a bathroom repair or installation.
Reach us at (619) 637-5215 or book online. We offer same-day and emergency appointments.
We inspect the fixture or line, identify the real cause, and give you a clear upfront price before any work begins.
Your licensed plumber completes the job cleanly, protects your floors and surfaces, and works to current plumbing code.
We test for leaks and proper operation, then back our workmanship so you have peace of mind.
Every bathroom and every repair is a little different, so the only accurate price is one based on your actual situation. The ranges below show what we commonly see for San Diego bathroom plumbing. A&A Plumbing confirms the scope and gives you a written price before we begin — no surprises, no hidden fees. For a deeper breakdown, read our guide on how much plumbing repair costs.
| Service | Typical Range | What Drives the Cost |
|---|---|---|
| Faucet repair or cartridge replacement | $150 – $350 | Fixture brand, part availability |
| Faucet replacement | $200 – $500 | Faucet type and sink access |
| Toilet repair (flapper, fill valve, flanges) | $150 – $400 | Parts needed and flange condition |
| Toilet replacement | $350 – $800 | Model, wax ring, shutoff valve |
| Shower valve cartridge swap | $185 – $400 | Brand and access |
| Full shower valve replacement | $450 – $1,500+ | Wall access, tile patch, valve type |
| Bathroom drain cleaning | $150 – $450 | Clog severity and pipe length |
| Leak detection & repair | $250 – $900+ | Location, access, and pipe material |
| Bathroom fixture installation | $150 – $1,200 | Fixture type and connections required |
From coastal condos to inland slab homes, our licensed plumbers serve the entire county. Find your neighborhood below.
Learn more about the issues behind the most common bathroom plumbing calls in San Diego.
Still have a question? Call us at (619) 637-5215 — we are happy to help.
Most bathroom plumbing repairs in San Diego fall between about $150 and $600. A faucet cartridge, a toilet flapper, or a clogged drain sits at the low end, while a shower valve replacement behind tile runs higher because of wall access and patching. We always provide a written, upfront price before any work begins. See our guide on plumbing repair costs for a fuller breakdown.
A toilet that keeps running is almost always a worn flapper, a failing fill valve, or a float set too high. It can waste hundreds of gallons a day. Put a few drops of food coloring in the tank and wait 15 minutes without flushing — if color reaches the bowl, the flapper is leaking and should be replaced.
In San Diego, low shower pressure is usually mineral scale from hard water clogging the showerhead, cartridge, or supply line. If only the shower is weak, the fix is often a new cartridge or a cleaned aerator. If pressure drops throughout the house, the cause may be scale in aging pipes, a failing pressure-reducing valve, or a hidden leak that needs professional diagnosis. Learn more about low water pressure in San Diego homes.
If the valve body is clean and less than roughly 20 years old, replacing the cartridge usually fixes the problem. A full valve replacement is the better option when the body is corroded or leaking, the brand is discontinued, or you have a pre-1990s two-handle setup that no longer meets California anti-scald code.
Yes. We handle bathroom remodel plumbing, including rough-in for new fixtures, drain and supply relocation, installation of code-compliant pressure-balance or thermostatic shower valves, and final fixture connections. We can work alongside your contractor and help coordinate any permits required by the City of San Diego. Read our San Diego plumbing code guide for what typically applies.
Yes. San Diego tap water averages roughly 16 to 18 grains per gallon, which is classified as very hard. The minerals build up as scale inside faucets, shower valves, and toilets, reducing flow and shortening fixture life. A whole-house water softener is the most effective way to protect bathroom fixtures and pipes.
Call A&A Plumbing for fast, licensed bathroom plumbing with upfront pricing.