Every plumbing fixture in the house; each sink, toilet, bathtub, shower, washing machine, etc has an independent waste water and waste material drain. All these waste lines eventually find their way to the main drain which connects the house to the municipal sanitary sewer, from there it goes to a sewage treatment plant. Any of these drains, the ones associated with the independent fixtures or the main house sewer drain can become clogged and need the services of a company that provides drain cleaning in Queens.

A single family dwelling has one sewer system, multiple family dwellings such as large apartment or condo complexes will have multiple drains to cope with the large amount of waste that is generated. Although there will be multiple drains, each one serves and independent and completely separate system within the building.

As the various drains within the house come together this point is considered as the house drain, it extends some distance from the foundation where it connects with the house sewer. The house sewer pipe is usually cast iron but in many cases vitrified pipe is allowed. Where the drain and the sewer join is where the cleanout is often located. When drain cleaning in Queens becomes necessary it is at this cleanout the operators can access the drain. A lot depends on the municipality and their rules but in many cases a commercial plumber who works for the homeowner can only deal with the house drain and the utility company deals with the sewer. When a new home is constructed the municipality building inspector will inspect both the drain, sewer and pressure water connections. Once approved the trenches can be backfilled and the plumbing used.

In some circumstances, perhaps a torrential rainstorm for example, the sanitary sewer will fill with storm water. The sanitary sewer is not designed for this and it can quite quickly back up and actually enter the house through the sewer connection. For this reason when the branch sewer from the house is connected to the main sewer line, the inspectors will ensure that the house branch enters the line above the centreline, this arrangement usually stops any sewage and sewer water from backing up and coming up in the shower or tub which are the lowest drain points in the house.

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