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"When Nature Calls - We Answer"


Commercial, Residential and Agricultural

A backed up or malfunctioning septic system is no joking matter.  That's why Big Muddy's C.S.I.'s are dedicated to providing the best service they can to ensure that your septic needs are handled in the highest quality manner.  

We offer servicing in Mandan, Bismarck, Dickinson, Williston, Minot, Grandforks, Fargo, and Jamestown areas.

Septic Tanks

Grease Traps

Image result for septic tank cleaning big muddy

Image result for septic tank cleaning big muddy

Although you can't see your septic tank, it's working hard for you all day, every day... until something goes wrong. Considering what goes down the drains every day, the last thing you want is a malfunctioning or backed-up septic tank.

Even the most careful homeowners need to show their septic system some regular love and attention by properly taking care of it. Septic tank pumping must be done by a professional plumbing and septic company like Big Muddy Septic Service.

At Big Muddy Septic, our professional technicians are experts at identifying factors that could affect your septic system. From the tank to drain field, our technicians will ensure that your septic system is operating properly and that your tank levels are normal. If the scum and sludge levels in your tank are too high, it's time for your septic tank to be pumped.

Septic Tank Dos and Don'ts

Grease interceptors, also known as grease traps, are very similar to septic tanks found in homes. Water that enters drains in fixtures like dish washers, floor drains, and kitchen and bathroom sinks all lead to your grease trap, where a baffle then separates the material that enters. Like scum in a septic tank, grease that enters the trap will settle at the top, while food scraps and other solids will settle at the bottom.

These systems work great to keep water flowing through the building while keeping grease and other solid wastes out of the disposal lines. It's every businesses responsibility to ensure that they do their part to maintain and clean their traps. An overflow of grease from a grease trap could clog sewer lines and cause blockages, which can cause unsanitary water to back up into surrounding homes, businesses, and streets.

Schematic of a Grease Trap

Carwashes and Shop Pits

Sump pits perform a vital function for commercial locations that have work or wash bays, such as car washes and automotive repair shops. They prevent contaminants from entering the sanitary sewer system.

Shop mud pits, trench drains and sludge pits collect grease, oil, sand, grit and other heavy solids either separately or as part of an oil-water separator.

Sump pits require periodic cleaning and the waste tested for hazardous materials. If deemed hazardous, the sump waste must be taken to a proper disposal facility.


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