Brewster, NY, Tyndall Septic Systems specializes in installation, repair, maintenance of septic systems, electric, water, sewer utilities and site excavations. We serve Putnam County, Westchester County and Dutchess County of New York.


Multi-Flo is the premier wastewater treatment unit available for residential use. Its secret: sufficient aeration to treat the most troublesome wastewater and 30 filter bags that provide 132 ft2 of filtration surface. The result: Multi-Flo units produce an effluent that has less than 5 mg/L CBOD and TSS and a fecal coliform counts that average 203 cfu/100 mL---a whopping 99.999% disinfected---based on independent studies at the University of Wisconsin. In practice, Multi-Flo units regularly produce effluent that have less than 50 cfu/100 mL. No other residential wastewater treatment units can compare.

Examine this cross-section of a Multi-Flo unit. Water enters the unit through the 4-inch PVC pipe that is attached to dwelling or building being served. The aerator at the bottom of the unit draws air through the clear plastic tube and into the reactor chamber, where it mixes with the water. The 30 white filter bags provide filtration at a nominal 100 micron size, assuring you of the cleanest effluent possible. The white PVC pipe also supports a sensor array to alert you and service personnel should a problem with the unit occur.

Note the quality of construction, which includes fiberglass, PVC, and mesh nylon. Also note how the filter bags prevent solids from leaving the unit. Multi-Flo units provide the cleanest effluent because the filter bags prevent the release of solids. And as the filter bags develop a layer of particles, the filtering capabilities increase.

The filter bags are easily accessible for cleaning. A plastic surge bowl, which prevents influent from splashing into the effluent chamber, can be lifted out to expose the filter bag array. Each filter bag can be removed for inspection or replacement as necessary. Filter bags can be washed in a typical washing machine and reused.

Multi-Flo units produce the cleanest effluent. The reactor, which contains the mixture of wastewater and bacteria, has a characteristic frothy appearance. This is the sign of a healthy unit. Note the effluent: it's crystal clear - so clear that you really cannot see it. What you see are the effluent weir and filter

Coming soon!

Special equipment designed to create an ideal seed bed for lawns. A spinning toothed roller creates a dimpled subsurface, leaving a golf ball appearance which keeps seed in place, and prevents erosion. This results in a fast growing more even rooted seed bed. This is excellent for new lawn construction or rejuvination of worn grass areas for re-seeding.


Enviro-Guard is the ultimate in wastewater treatment: a self-contained system that removes, organic material, solids, pathogens, and nitrogen. Enviro-Guard is the only choice for sensitive environments. Enviro-Guard starts with the Multi-Flo treatment engine, which is enhanced by primary treatment and flow equalization. Enviro-Guard systems include a 500-gallon primary treatment tank and 600-gallon dose tank with associated dosing pump and timer. These tanks condition and hold wastewater for dosing to the treatment tank. Treatment efficiency is maximized by controlling dose frequency, interval, volume, and rate. Enviro-Guard is designed to condition, dose, and treat wastewater such that the effluent can be recycled to the native environment. Enviro-Guard systems remove organic materials solids by over 98 percent. Effluent concentrations of organic material and solids are routinely less than 5 mg/L. In addition, Enviro-Guard reduces total nitrogen, mostly nitrate, by over 60 percent. Were that not enough, NSF conducted a test to determine how long an Enviro-Guard system would take to return to proper functioning after two-months of non-use. The result: two days!






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