About The Leak Authority

Discover the story behind Northern California’s trusted expert in plumbing, leak detection, and sewer solutions.

From slab leaks to sewer lines we locate the unseen with precision, advanced tech, and zero disruption.

About The Leak Authority

Discover the story behind Northern California’s trusted expert in plumbing, leak detection, and sewer solutions.

From slab leaks to sewer lines we locate the unseen with precision, advanced tech, and zero disruption.

Phone: (415) 691-2258

About Us

When it comes to choosing the right person to find and fix a leak. You want someone who’s reliable, skilled, and customer-focused.

At The Leak Authority™, we believe finding leaks shouldn’t involve guesswork, digging up yards, or tearing into walls without answers. That’s why our focus is simple: we find the leaks others can’t.

The company was founded by John Stephenson — better known as The Leak Doctor. With decades of plumbing experience, John built a reputation for solving the tough problems other companies walk away from. Today, plumbers, homeowners, businesses, and even municipalities call on John and his team when precision truly matters.

We use cutting-edge, non-invasive technology, from acoustic listening devices and tracer gas to infrared imaging and camera scopes — to pinpoint leaks quickly and accurately. No damage. No wasted time. Just clear answers you can trust.

Our mission goes beyond fixing leaks. We’re here to help people protect their property, lower their costs, and conserve water, one of California’s most valuable resources. Whether you’re a homeowner with a hidden slab leak, a business facing rising water bills, or a city managing critical infrastructure, we’re here to give you peace of mind.

Why People Choose The Leak Authority™

Owner-operated by John Stephenson (The Leak Doctor) — you get expertise, not guesswork
Specialists in advanced leak detection, not general plumbing
Licensed and insured for your protection
Honest communication, no unnecessary repairs
Trusted by plumbers, property managers, and city officials across Northern California
Non-invasive technology that saves you time, money, and disruption
Precision diagnostics for water, gas, and sewer leaks

Book Appointment

About Us

When it comes to choosing the right person to find and fix a leak. You want someone who’s reliable, skilled, and customer-focused.

At The Leak Authority™, we believe finding leaks shouldn’t involve guesswork, digging up yards, or tearing into walls without answers. That’s why our focus is simple: we find the leaks others can’t.

The company was founded by John Stephenson — better known as The Leak Doctor. With decades of plumbing experience, John built a reputation for solving the tough problems other companies walk away from. Today, plumbers, homeowners, businesses, and even municipalities call on John and his team when precision truly matters.

We use cutting-edge, non-invasive technology, from acoustic listening devices and tracer gas to infrared imaging and camera scopes — to pinpoint leaks quickly and accurately. No damage. No wasted time. Just clear answers you can trust.

Our mission goes beyond fixing leaks. We’re here to help people protect their property, lower their costs, and conserve water, one of California’s most valuable resources. Whether you’re a homeowner with a hidden slab leak, a business facing rising water bills, or a city managing critical infrastructure, we’re here to give you peace of mind.

Owner-operated by John Stephenson (The Leak Doctor) — you get expertise, not guesswork
Specialists in advanced leak detection, not general plumbing
Licensed and insured for your protection
Honest communication, no unnecessary repairs
Trusted by plumbers, property managers, and city officials across Northern California
Non-invasive technology that saves you time, money, and disruption
Precision diagnostics for water, gas, and sewer leaks

Book Appointment

Our Clients Speak for Us

We take pride in making our clients happy. Read some of the feedback from satisfied homeowners who trusted The Leak Authority for their plumbing needs.

FAQ's

Water Leaks

How can I tell if I have a water leak?

Look for signs like unusually high water bills, damp spots or stains on walls/floors, mold growth, musty odors, standing water, unusual landscaping (lush or soggy), or hearing running water when nothing is on.

Can I use my water meter to check for leaks?

Yes—turn off all fixtures and appliances, then watch the meter. If it moves, even slightly, you likely have a leak.

What causes pipes to leak?

Common culprits include corrosion (often from water chemistry), aging components, poor installation, shifting structures, or degraded seals.

Gas Leaks

How can I detect a gas leak?

Natural gas is odorless but mercaptans are added to give it a rotten egg or skunk-like smell. If you detect that odor or hear hissing, evacuate immediately and call emergency services

What are the risks of a gas leak?

Gas leaks can pose serious fire or explosion hazards. They can harm vegetation or animals and reduce oxygen levels, posing health risks.

Who is responsible for inspecting gas lines?

Gas utility companies are required to inspect gas equipment up to and usually including the point of entry into a building, as per federal safety standards.

Sewer Leaks

What causes sewer gas problems indoors?

Sewer gas might enter through dry traps (commonly in infrequently used drains) or blocked vents.

How do plumbers detect sewer gas leaks?

Smoke testing—forcing artificial smoke into sewer lines—helps reveal defects by observing where smoke escapes.

What is a trap primer and why is it important?

A trap primer is a device that adds water to plumbing traps (like floor drains) to maintain a water seal, preventing sewer gas from entering the building.