Water Leak Detection and Testing in San Francisco, CA

leak detection and repair

Find the Source of Your Leak Fast with Professional Leak Detection

Water leaks can be silent, sneaky, and seriously damaging. Whether you’re seeing an unexpected spike in your water bill or spotting water stains with no clear source, acting fast is essential. At Heise's Plumbing, we offer expert Water Leak Detection and Testing in San Francisco, CA, and surrounding areas. Our team uses non-invasive methods and advanced technology to locate hidden leaks—saving you time, money, and stress. Even small, unnoticed leaks can lead to structural damage, mold growth, and skyrocketing water costs if left unresolved.

Call us today at (415) 333-0704 for fast, accurate water leak detection!

Why Customers Count on Us

When it comes to leak detection, precision matters. We don’t just guess—we diagnose. With years of experience and top-tier tools, Heise's Plumbing provides clear answers and trusted repairs. Homeowners and property managers rely on us because we:

  • Use state-of-the-art acoustic and infrared testing equipment
  • Offer transparent pricing and honest recommendations
  • Are fully licensed, insured, and code-compliant

Respond quickly and work cleanly with minimal disruption

Advanced Testing That Solves the Problem

Leaks can occur anywhere—under slabs, behind walls, or beneath your lawn. Our technicians are trained to find and confirm even the toughest-to-spot leaks before they cause major damage. Once we identify the issue, we offer targeted repair options to get things flowing smoothly again.

We offer comprehensive leak detection services including:

  • Acoustic and ultrasonic pipe testing
  • Thermal imaging for behind-wall moisture detection
  • Pressure testing for plumbing and irrigation systems
  • Slab and underground yard line inspections
  • Pool and spa leak assessments

We specialize in both residential and light commercial systems, ensuring accuracy regardless of the pipe layout or property type. Whether it’s a dripping connection or a major underground rupture, we get to the root of the issue quickly—so you can move forward with confidence.

Get Peace of Mind Today

Water damage doesn’t wait—and neither should you. Heise's Plumbing delivers fast, effective Water Leak Detection and Testing in San Francisco, CA, and surrounding areas to protect your property and your peace of mind.
 

Call us now at (415) 333-0704 to schedule expert leak testing and avoid costly repairs later.

Most Recent Pins (61)

Heises Plumbing
Heises Plumbing completed a toilet replacement and angle stop installation at a multi-unit property in San Francisco, California. Technicians shut off the building’s water, replaced a toilet, installed new angle stops and supply lines, and tested all fixtures for leaks. Unit 205 received three additional quarter-turn angle stops for bathroom and kitchen fixtures.
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Heises Plumbing
Heises Plumbing repaired a kitchen sink in Portola Valley, California. The technician replaced hot and cold angle stops, added new chrome escutcheons, and soldered a new copper stub-out to fix a leak. All plumbing connections were pressure-tested to ensure proper function in the single-family home’s kitchen.
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Heises Plumbing
Heises Plumbing installed a customer-provided widespread faucet at a home in San Francisco, California. Technicians removed the old fixture, replaced all connections, sealed fittings, and ensured accurate alignment. They tested the faucet for leaks and confirmed smooth operation of both hot and cold water before completing the job.
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Heises Plumbing
Heises Plumbing completed an emergency water line replacement and repipe in San Francisco, California. The team located a leaking copper pipe in the garage, repiped the entire area with new copper lines, installed updated fittings, and ensured proper water pressure. This work restored service and improved the home's plumbing reliability.
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Heises Plumbing
Heises Plumbing installed a new AO Smith 40-gallon water heater in a single-family home in San Francisco, California. The project included new hot and cold supply lines, a gas line, and pressure-tested connections. A follow-up visit will add a 2x4 support structure for earthquake safety straps to meet California code requirements.
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Heises Plumbing
Heises Plumbing completed a toilet measurement and leak repair in South San Francisco, California. The technician confirmed fitment for a new TOTO toilet, replaced two worn angle stops, and installed new supply lines. All connections were tested to ensure leak-free operation. A return visit will complete the toilet installation after delivery.
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Heises Plumbing
Heises Plumbing installed a 50-gallon AO Smith water heater in San Francisco, California. The team removed the old unit, added earthquake straps meeting California codes, and reconnected gas, water, and vent lines. All connections were tested to confirm proper operation. The installation site was left clean and the system fully functional.
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Heises Plumbing
Heises Plumbing serviced a home in San Francisco, California for a clogged bathroom sink and inconsistent shower performance. Technicians removed the P-trap, recovered a lost ring, and cleared hair blockage from the basin drain. They also identified worn cartridges in the shower valve and kitchen faucet, scheduled for replacement to prevent leaks and ensure steady water flow.
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Heises Plumbing
Heises Plumbing cleared a sewer clog in San Francisco by accessing the cleanout under a lavatory sink. A 38 cable improved initial flow, and a 14 hose extended 25 feet further cleared the line. A follow-up camera inspection is recommended to check for root intrusion or pipe damage.
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Heises Plumbing
Heises Plumbing completed an emergency repair in San Francisco, California. The team replaced a leaking P-trap under the sink and fixed a toilet leak by installing a new fill valve and water supply line. All plumbing fixtures were tested after the repair to ensure proper function and no further leaks.
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Heises Plumbing
A plumber in San Francisco disconnected an unused refrigerator water line and inspected for leaks. The technician removed a tee adapter, reconnected the faucet supply hose directly, and tested the system. No active leaks were found. The area is now sealed and secure after confirming past leakage likely came from residual water.
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Heises Plumbing
Heises Plumbing installed a new kitchen drain assembly at a residence in San Francisco, California. The work included a basket strainer, continuous waste kit, P-trap, and tailpiece. All components were aligned, sealed, and tested to ensure leak-free operation.
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Heises Plumbing
A plumbing technician in San Francisco, CA repaired a shower faucet to restore water pressure, cleared a clogged basin drain, secured a loose basin faucet handle, and fixed a water dispenser faucet under the kitchen sink by tightening connections and reinstalling the garbage disposal. All components were tested and confirmed leak-free.
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Heises Plumbing
A plumber in San Francisco replaced a kitchen faucet, angle stops, escutcheons, and supply hoses in a single-family home. The work restored water flow, stopped leaks, and ensured code compliance. All new connections were pressure-tested and confirmed for proper hot and cold water function.
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Heises Plumbing
A technician repaired a punctured copper water pipe in a single-family home basement in Daly City, California. The team shut off the water supply, replaced the damaged copper section with a new 90-degree elbow and pipe, and tested the system. Water service was restored with no leaks remaining.
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Heises Plumbing
A plumber in San Francisco completed an emergency repair for a leaking toilet bend. The team opened the ceiling below to access the leak and allow moisture to dry. They replaced the damaged pipe, secured all fittings, reset the toilet, and confirmed the system was leak-free.
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Heises Plumbing
Heise's Plumbing completed a residential plumbing service in San Francisco, California. The team cleared blockages in an upstairs basin and downstairs kitchen sink, replaced a leaking basket strainer, and installed new shower stems and a spout. All fixtures were tested for leaks, and the drainage system was confirmed working properly.
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Heises Plumbing
Heise's Plumbing repaired an emergency sink leak in San Francisco, California. The team replaced a short flanged tailpiece, broken lock nut, and faulty washer. Technicians secured all plumbing connections and confirmed they were free of leaks after testing.
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Heises Plumbing
HEISE'S PLUMBING repaired a leaking 4-inch commercial water line in a 13th-floor office in downtown San Francisco, CA. The team replaced the damaged pipe, sealed all joints, pressure-tested the system, and restored service. Work followed commercial plumbing standards and caused minimal disruption to the building’s daily operations.
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Heises Plumbing
Heise's Plumbing repaired two widespread faucets using owner-supplied stems and a brass T connection, replaced a shower cartridge, adjusted the shower temperature to 100°F, and unclogged a basin drain in San Francisco, California. Each task restored proper plumbing function and ensured efficient water flow throughout the bathroom fixtures.
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Heises Plumbing
A plumber in San Francisco removed a vertical 4-inch cast iron pipe and prepared for replacement. The handyman will open part of the living room wall to improve access. The plumber will return to inspect and define how much of the pipe needs replacing.
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Heises Plumbing
Plumbers repaired leaks in two units of a multi-family building in Redwood City, California. They replaced five feet of damaged galvanized pipe, installed new drainage components, and used a camera to confirm a blockage. Technicians cleared the line with hydro-jetting and snaked 35 feet of drain to restore proper flow.
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Heises Plumbing
A plumber in Palo Alto repaired a leaking kitchen faucet by replacing a worn cartridge. The technician also identified a leak in the P-trap under the sink and installed a new P-trap. After testing, both the faucet and drainage system worked properly without any leaks.
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Heises Plumbing
Heise's Plumbing installed a new P-trap and reconnected the garbage disposal in a San Francisco kitchen. The team removed the existing assembly, ensured proper alignment, sealed all joints, and tested for leaks. They confirmed smooth drainage and cleaned the area after completing the service.
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Heises Plumbing
A plumber in San Francisco investigated a kitchen sink leak by opening the back wall of the cabinet. They identified a damaged cast iron sanitary tee and inspected nearby piping. The plumber removed the leaking clean-out to prepare for full replacement of the faulty components.
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Heises Plumbing
A plumber in San Carlos, California replaced a main water shut-off valve and pressure reducing valve. The technician removed aging components, installed new ball valves and copper fittings, added a new hose bib, and secured all piping. The system was tested after restoring water service to confirm proper operation.
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Heises Plumbing
A plumber in Menlo Park, California repaired a leaking outdoor hose spigot. The service included installing a new hose bib, sealing all connections to stop leaks, and testing water flow for proper function. This ensured reliable outdoor water access and prevented future leakage issues.
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Heises Plumbing
Heise's Plumbing cleaned a clogged bathtub drain and replaced damaged galvanized piping with four feet of new copper pipe in San Francisco, California. The work included removing a 1-inch galvanized tee, installing a 1-inch copper 90-degree fitting, and using compatible copper couplings to ensure a strong and functional plumbing connection.
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Heises Plumbing
A plumber in Woodside, CA repaired a leaking shower head by tightening the packing nut and replaced the hot-side faucet stem on a wall-mounted sink. The plumber found damaged angle stops and advised replacing them, requiring a full water shutoff to complete the future repair.
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Heises Plumbing
Heise's Plumbing cleared a blocked kitchen sink drain in San Francisco using a Super V cable machine. The team secured all drain connections, replaced a worn washer, and tightened a loose faucet. They tested the system with multiple sink fills and confirmed proper drainage and operation. All work met code and left the system functioning properly.
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Heises Plumbing
A licensed plumber in San Francisco completed a toilet repair by replacing the fill valve, flapper, and water supply line. The service restored proper flushing and stopped leaks. All components met code requirements and were installed using durable materials for reliable operation.
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Heises Plumbing
A plumber in Stanford, CA replaced a leaking kitchen P-trap and two damaged copper water supply lines. The service included removing the old trap, installing a new brass P-trap, and testing faucet operation. All connections were checked to ensure no further leaks and proper drainage under the sink.
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Heises Plumbing
Licensed plumbers replaced a damaged hose bib and completed repiping to stop a leak in San Francisco, CA. They installed new fittings, tested the system, and verified proper function. This service improves water flow and prevents future leaks in outdoor faucet connections.
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Heises Plumbing
A plumber in Atherton, CA replaced a cracked kitchen sink P-trap assembly. The work involved removing a damaged slip nut and flanged tail-piece, installing new parts, and reassembling the unit. The system was tested for leaks to ensure full functionality and safety.
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Heises Plumbing
HEISE'S PLUMBING repaired a leaking water service line in San Francisco, California. The team identified the leak between the city meter and the house shut-off valve, which caused high water usage. They shut off the water, inspected the system, and recommended a full line replacement to stop waste and restore service.
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Heises Plumbing
Heise's Plumbing investigated a leak and assessed a radiator system in San Carlos, California. Technicians opened walls and ceilings to inspect pipes, identified moisture linked to an aging radiant heating system, and documented system conditions for Unit 205. The team protected exposed areas and cleaned the site after inspection.
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Heises Plumbing
Heise's Plumbing repaired a kitchen sink leak in San Francisco, California. The work included replacing a cracked P-trap, installing new angle stops, replacing hot and cold supply lines, and fitting a new tailpiece. All connections were tested for leaks, and the sink was confirmed to be fully functional.
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Heises Plumbing
Heise's Plumbing installed a Flo by Moen Smart Water Shutoff system in San Francisco, California. The team removed part of the main water line, added the flow sensor and shutoff valve, and connected it to the home plumbing. They paired the device with the customer's Wi-Fi and app for leak detection and remote control.
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Heises Plumbing
A technician in San Francisco, California repaired an under-sink leak by inspecting supply lines, valves, the P-trap, and drain connections. The work involved replacing faulty parts, shutting off the water supply, testing for leaks, removing damaged components, and cleaning the area after the repair.
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Heises Plumbing
Heise's Plumbing inspected a property in Palo Alto, California, and identified failed angle stops with damaged gaskets. These caused debris buildup in the water lines. The main shut-off valve is also nonfunctional. Technicians will return to shut off water at the street and replace three angle stops to restore water flow.
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Heises Plumbing
Licensed plumbers in San Francisco repaired and replaced a Delta kitchen faucet, Price Pfister basin stems, and a wall-mounted utility sink faucet. The service covered kitchen, bathroom, and laundry faucets in both residential and commercial properties.
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Heises Plumbing
Heise's Plumbing repaired a leaking shower valve in San Carlos, California. Technicians accessed the valve by opening the back wall, replaced faulty parts, and repiped the connections. A new valve was installed. Damaged drywall was removed, and fans were used to dry the area, preventing water damage and mold. The site was left safe and ready for restoration.
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Heises Plumbing
A plumber in San Francisco repaired a clogged garbage disposal and a damaged airgap. The technician replaced a crimped hose, cleared food debris from the disposal port, and installed a new airgap. Water flow was restored, and the kitchen sink drainage system now works properly.
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Heises Plumbing
Heise's Plumbing replaced a faulty shower mixing valve in Palo Alto, California. The team removed the old valve, prepared the piping, and installed a new single-handle Delta mixing valve. They restored water service, tested for leaks, and ensured proper function before cleaning the work area and removing all debris.
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Heises Plumbing
Heise's Plumbing repaired a shower leak in San Francisco, California. The team located the source, replaced a damaged valve, repiped affected plumbing, and restored drywall. Technicians tested the system after completing repairs to confirm no leaks remained. This emergency leak detection and valve repair prevented further water damage to the property.
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Heises Plumbing
Heise's Plumbing repaired a leaking garden hose bib in a San Francisco backyard. The technician replaced the faulty part, restored water flow, and confirmed the system had no leaks. This service ensured proper outdoor faucet operation for the residential property.
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Heises Plumbing
A plumber in San Francisco replaced a faulty gas control on a Bradford White water heater. The team removed the damaged component, installed a new control kit, and tested the unit to confirm proper heating and safe operation. This repair restored full functionality to the residential water heater.
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Heises Plumbing
A plumber in San Francisco removed a cracked toilet and installed a new elongated TOTO toilet. The installation included a new wax ring and bolt kit to ensure a secure and leak-free connection. This service restored full function to the bathroom with an updated toilet setup.
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Heises Plumbing
A plumber in San Francisco located and repaired a leaking hose bib behind a washer and dryer. The team used leak detection tools to identify the issue. They fixed the connection and tested the appliance setup to confirm all leaks had stopped. The washer and dryer worked properly after the service.
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Heises Plumbing
Heise's Plumbing repaired a Delta kitchen faucet in Menlo Park, California. The plumber replaced a worn cartridge, reassembled the faucet, and restored normal function. After testing for leaks, the faucet operated correctly. This kitchen plumbing repair included full disassembly, installation of a new Delta cartridge, and system testing to confirm performance.
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Heises Plumbing
Heise's Plumbing repaired a leaking utility sink drain pipe in a San Francisco, California basement. Technicians replaced a corroded galvanized section, installed new piping, and secured proper drainage to stop water from reaching the foundation. They tested the sink and confirmed all connections were leak-free to prevent further foundation issues.
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Heises Plumbing
Heise's Plumbing replaced a faulty freezer-side fan motor assembly to resolve cooling issues and ice buildup in a Sub-Zero unit in Portola Valley, CA. The inoperative fan prevented proper temperature regulation, causing system inefficiency. This repair restored airflow and normal freezer function.
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Heises Plumbing
Heise's Plumbing replaced a broken 3/4 HP garbage disposal with a new 1/2 HP unit in San Francisco, CA. The team installed an over-the-pipe extension tube for proper alignment and scheduled a change from a twist-lock electrical outlet to a 3-prong outlet.
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Heises Plumbing
Heise's Plumbing removed an old garbage disposal and plastic P-trap in San Francisco, CA. The team installed a new basket strainer, new P-trap, and two flanged tailpieces to complete the sink drainage connection. Each part was added to support smooth water flow and prevent leaks.
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Heises Plumbing
An emergency plumber in Hillsborough, California replaced a faulty toilet fill valve and water supply line. The plumber also installed a new flapper to improve sealing and flushing. Multiple tests confirmed reliable toilet function. The plumber cleaned the area after completing the repair.
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Heises Plumbing
Heise's Plumbing flushed a residential water heater and resolved rusty water issues in San Francisco, California. The technician drained the tank, cleared out sediment and rust, refilled the system, and restarted the unit. Clear water flow was confirmed at multiple fixtures, and the heater was verified for safe and efficient operation.
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Heises Plumbing
A plumber in San Francisco, California removed a leaking toilet to replace a worn wax ring. They reset the toilet, reconnected the water supply, and tested the fixture. The service ensured the toilet no longer leaked and functioned correctly.
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Heises Plumbing
A plumber in San Francisco, CA repaired a Rheem 50-gallon water heater during an emergency service. The technician replaced the control assembly, relit the pilot light, and restored hot water for the household. Service was completed on a Sunday to ensure the home's hot water system returned to full operation.
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Heises Plumbing
A plumber in San Francisco, California completed a water heater repair by replacing hot and cold water supply lines, installing a new 3/4" shutoff valve, and adding two 3/4" copper male adapters to ensure secure pipe connections.
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Heises Plumbing
Heise's Plumbing completed a faucet repair in Daly City, California. The plumber shut off the shower water supply, removed old handles, and installed three new chrome Price Pfister handles. They replaced worn stem washers or seats and tested the hot, cold, and diverter functions. The system showed no leaks after testing.
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Heises Plumbing
HEISE'S PLUMBING replaced a leaking kitchen sink line in San Francisco, CA. The team removed the damaged tee and pipe section, then installed a new copper pipe with a tee fitting to restore proper water flow.
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