888-876-6259 76 Maple St. Manchester, NH 03103


Allied Septic – Full Service Septic Service and Inspection

Allied Septic, a division of Trombly Enterprises, is a full-service septic company with a fleet of trucks and technicians to service, inspect and repair just about every imaginable septic system design in New Hampshire.  

What is a septic system?

A septic system is a two part treatment and disposal system designed to condition untreated liquid household waste (sewage) so that it can be readily dispersed and percolated into the subsoil. Percolation through the soil accomplishes much of the final purification of the effluent, including the destruction of disease-producing bacteria.

What should I do to maintain my septic system?

By following a recommended pumping schedule, you can prolong the life of your leachfield. 

Additional services include:


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