Professional Sewer Gas Detection in Long Island

A sewer gas leak affects your indoor air, your family’s health, and also points to a serious plumbing issue behind the walls or under the floors. Contact us now to detect the source of sewer gas in your home.

Get Sewer Gas Detection Service to Identify the Source of Foul Smells

Every home in Long Island has a plumbing system where daily organic waste moves through drains and sewer pipes. As that waste breaks down, it produces gases like hydrogen sulfide, methane, and ammonia. These gases vent safely out of your house in normal conditions.

But older properties across Nassau and Suffolk County often have aging plumbing infrastructure. They are cracks in basement drains and pipes in crawl spaces or behind walls. The gases escape into your living space from such leaks. Without the right equipment, you will spend days guessing and still can’t find the source.

Our sewage gas leak detector helps find the source of the leak. At Quest Mold and Asbestos Testing, we use smoke testing combined with advanced sewer gas monitors to accurately locate where the gas is coming from, so you can get the leak fixed soon.


If you can’t bear that foul smell anymore, reach out to us for sewer gas detection in Long Island now.

Fixed Gases Testing

Health Issues You Face Due To Sewer Gas Exposure

Sewer gas exposure can create serious indoor air quality concerns when harmful gases begin leaking from damaged sewer lines, cracked pipes, dry drain traps, or blocked plumbing vents. As these gases spread throughout the property, occupants may start experiencing several health-related symptoms, especially when exposure continues for long periods. Common hazards linked to sewer gas exposure include:

Professional sewer gas detection helps identify hidden leaks early, so the source can be repaired before the problem affects comfort and indoor air quality throughout the property. Reach out now to schedule sewer gas detection if you care about your family’s health.

How Our Professionals Find the Source of Sewer Gas?

We apply a systematic approach for finding the source of sewer gas instead of just following the smell of gas.

  • Step 1- Initial Property Assessment
    We inspect your property to note the affected rooms, the intensity of the odor at every location, and accessible plumbing entry points.
  • Step 2 – Smoke Testing
    Non-toxic smoke is introduced into the plumbing system under slight pressure. Any cracks, faulty seals, or open gaps allow smoke to escape, making breach points visually identifiable.
  • Step 3 – Sewer Gas Sensor Readings
    Sewer gas sensors are used to take real-time readings of gas concentration levels throughout the property.
  • Step 4 – Leak Mapping
    All identified breach points are recorded and mapped, giving you a precise picture of where the plumbing system has failed.

Want to know from which drain or pipe is leaked or cracked? Book our sewer gas detection service and get a confirmed source location.

We Follow the Non-Destructive Sewer Gas Detection Methods

Many homeowners think that locating sewer gas leaks requires breaking into walls or floors. In reality, that is a misconception. Our sewer gas detection process is non-destructive and designed to locate leaks without damaging your property. We use professional diagnostic techniques such as:

All these methods are designed to find the source of the problem without causing any secondary damage along the way. That’s why we never have to break open walls, cut into floors, or disturb any part of your home structure to locate a sewer gas leak.

Schedule Your Non-invasive Sewer Gas Detection with Quest Mold and Asbestos Testing Today.

Advanced Sewer Gas Detection Equipment 

  • Sewer Gas Monitors -They measure gas levels in the air and help identify the presence of harmful sewer gases inside the property. These tools help detect abnormal concentrations in enclosed spaces, basements, bathrooms, and near plumbing fixtures.
  • Sewer Gas Sensors – We use highly sensitive sewer gas sensors that can locate even small leaks hidden behind walls, under cabinets, or near drain lines. These sensors help narrow down the exact source instead of relying only on odor detection.
  • Smoke Testing Equipment– Smoke testing allows us to push harmless smoke through the plumbing system to expose cracks, loose joints, damaged seals, or disconnected vent pipes. It is one of the most effective sewer gas detection methods.
  • Thermal and Inspection Tools-Our sewer gas detection equipment also includes inspection cameras and advanced locating tools that help evaluate hidden plumbing lines and confirm leak locations without unnecessary damage to the property.

Don’t Let Sewer Gas Affect Your Indoor Air and Health. Let Us Detect the Source with Our Advance Sewer Gas Detection Equipment.

When to Book Sewer Gas Detection Services?

Even if the sewer odor seems minor at first, it is important not to ignore it because ongoing sewer gas exposure creates unhealthy indoor conditions. You must schedule sewer gas detection if:

Our sewer gas detector for home inspections helps identify the problem before it spreads further through the plumbing system. Reach out now to let our professional detect the source of sewer gas in your home.

Schedule Our Services for Sewer Gas Detection in Long Island Today

Wherever you are in Long Island, in Kings County, Queens County, Nassau County, or Suffolk County, or even anywhere in New York, you can count on Quest Mold and Asbestos Testing for sewer gas detection.