![What is this PVC pipe for? I'm thinking it has something to do with the septic system but the tank is about 20 feet away. There are no markings at all. : What is this PVC pipe for? I'm thinking it has something to do with the septic system but the tank is about 20 feet away. There are no markings at all. :](https://preview.redd.it/9hrau2d6j2451.jpg?width=640&crop=smart&auto=webp&s=bc37125b4cf2d7fccb027a0dfd3bada0b3cadf82)
What is this PVC pipe for? I'm thinking it has something to do with the septic system but the tank is about 20 feet away. There are no markings at all. :
![How To Repair a Broken Septic Pipe - Plumbing Perspective | News, Product Reviews, Videos, and Resources for today's contractors. How To Repair a Broken Septic Pipe - Plumbing Perspective | News, Product Reviews, Videos, and Resources for today's contractors.](https://plumbingperspective.com/wp-content/uploads/sites/3/2021/09/septic-system-design.jpg)
How To Repair a Broken Septic Pipe - Plumbing Perspective | News, Product Reviews, Videos, and Resources for today's contractors.
![Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (fits 1.5 or 2.0-inch) : Home & Kitchen Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (fits 1.5 or 2.0-inch) : Home & Kitchen](https://m.media-amazon.com/images/I/615PzzTYRTL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (fits 1.5 or 2.0-inch) : Home & Kitchen
![Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (4.0-inch) : Home & Kitchen Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (4.0-inch) : Home & Kitchen](https://m.media-amazon.com/images/I/61eCCvDgzpL._AC_UF350,350_QL80_.jpg)
Amazon.com: OdorHog Vent Stack Pipe Filter 4 Sizes, Black ABS with Mushroom Cap, Removes Outdoor Septic and Sewer Odors (4.0-inch) : Home & Kitchen
![Purpose of septic vents both in the yard and also through the roof? - Home Improvement Stack Exchange Purpose of septic vents both in the yard and also through the roof? - Home Improvement Stack Exchange](https://i.stack.imgur.com/IzWId.png)
Purpose of septic vents both in the yard and also through the roof? - Home Improvement Stack Exchange
![Oatey 3-in to 4-in x 4-in PVC Vent and Pipe Flashing in the Vent Pipe Flashing department at Lowes.com Oatey 3-in to 4-in x 4-in PVC Vent and Pipe Flashing in the Vent Pipe Flashing department at Lowes.com](https://mobileimages.lowes.com/productimages/ab601e1e-0ee7-41d8-8445-0fc526f176d6/64028366.jpg)