Best Sewer Gas Detector

Sewer gas not only smells horrible; if you are smelling it inside or around your home, you could have a very serious problem on your hands. Sewer gas is a huge health hazard and can do permanent damage to your property. So when it comes to detecting sewer gas leaks and stopping them before they become major issues, it is best to arm yourself and your household with a reliable sewer gas detector.

But how can you tell if you are getting a quality gas detector? Fear not, for we have done the research and testing for you. We started with the brands that engineers and contractors trust the most and whittled our selection down to the top-rated models by professionals and regular consumers alike. Having one of these products in your home at all times is vital to the health, safety and wellbeing of your family so read on to find out about the best sewer gas detectors.

Best Sewer Gas Detector Comparison


  • Detect sewer gas
  • Detect combustible gases
  • Detect gas leak
  • Great price


  • Detect sewer gas
  • Detect combustible gases
  • Detect gas leak
  • Great price


  • Detect sewer gas
  • Detect combustible gases
  • Detect gas leak
  • Great price

Sewer Gas Detector Review

This is pretty much the last gas detector you will need for your home or business. It is capable of detecting all manner of natural gas leaks, methane gas leaks, kerosene leaks and of course sewer gas leaks by as much as 50 PPM (Parts Per Million by volume). But maybe the best thing about this device is that it is user-friendly. We didn’t really know much about gas detection when we first started out but the EG Y201 is very intuitive.

It comes with a sensitivity dial on the side and an easy to read LED light gas level indicator. The device will sound an alarm at an unmistakable 85 decibels when it detects any kind of leak. The sniffer is attached to a 12-inch flexible neck that can be used to detect leaks in hard to reach areas like crawl spaces, under floorboards and inside walls. It also comes with a physical and digital user manual that tells you everything you need to know about how to use the device and about detecting combustible gas leaks.

  • Powered by 3 AAA batteries
  • Very durable design
  • Fits comfortable in the hand
  • Can be purchased in Canada as well

This is a great device for pinpointing the exact location and saturation of all kinds of gas leaks. First of all, it detects all kinds of combustible gases like ethane, propane, methane, gas oil, sewer gas and much more. Secondly, there are indicator lights that activate and tell you how dense the leak is – making it easy to walk the length of your gas line and find the exact point of leakage. This Pangea gas detector is equipped with a flexible 14” inch neck for reaching tough spots and it even comes with a video tutorial on how best to use the device and detect leaks.

This sewer gas detector also operates at a maximum sensitivity of 50 PPM and will let out an audio and LED light alarm when there is a leak detected. You can adjust the sensitivity to eliminate background gas obstruction with the side-mounted dial as well.

  • The most affordable sewer gas detector on our list
  • Powered by 3 AA batteries
  • Can last for 20 hours of continuous use
  • Can be purchased in Canada as well

The last product on our list of handheld portable gas leak detectors is one that comes with some handy features. Firstly, the UEi Test Instruments CD100A gas leak detector will let out an audio and visual “tick” as you move closer to the source of the leak. This makes it exceptionally easy for anyone to be able to find the source of a sewer gas leak. Secondly, there is a light mounted to the tip of the sniffer to help you see the area you are inspecting. This detector sports the longest sniffer neck of any of the products on our list at 18 inches too.

The UEi Test Instruments CD100A will also detect combustible and non-combustible gas leaks at a maximum sensitivity of 50 PPM. There is even a headphone jack if you don’t want to alert the whole neighborhood if/when you do find a gas leak.

  • Comes with a 1-year manufacturer warranty
  • Powered by a single 9 volt battery
  • Very easy to use effectively
  • Can be purchased in Canada as well

What to Look for in a Sewer Gas Detector

Please note that we tested products in a residential setting. While these products may be of use in some commercial settings, it is best to look at devices that were designed specifically for commercial purposes if that is how you intend to use yours. But for residential use, you should look for features like:

  1. The sensitivity of at least 50 PPM
  2. Auditory and visual alarm signals
  3. Indoor and outdoor use

Frequently Asked Questions

Can sewer gas harm you?

Yes. In high amounts, ammonia (which can be fatal for humans at worst and highly combustible at best) can seep into your home. Sewer gas typically contains hydrogen sulfide as well which is another very dangerous gas.

Will sewer gas set off a carbon monoxide detector?

If the sewer gas contains a large amount of methane, then yes it may trip your carbon monoxide detector.

What are the effects of breathing in sewer gas?

Sewer gas typically contains hydrogen sulfide. Hydrogen sulfide in small amounts can cause eye irritation and respiratory inflammation. You may also feel dizzy, nauseous, or get a headache even if there is just a little bit of hydrogen sulfide infiltrating your home.

Final Thoughts

With all the wildfires that have been caused by utility companies neglecting their lines in the past few years, it is now more important than ever to take matters into your own hands. We tested and used multiple sewer gas detectors for our own peace of mind and safety. We hope our article has shed some light on this serious topic and inspired you to safeguard what you hold dear. We also hope our list of the best sewer gas detectors will point you in the right direction. Also check out the best asbestos detector test kit.

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