The Basics
How a Mound System Works
A mound is used where the natural soil can't treat effluent on its own, because it drains too slowly or too fast or the water table is too high. The U.S. EPA's fact sheet calls a mound a sand filter that is dosed under pressure and drains into the natural soil beneath it (EPA mound systems fact sheet). A Wisconsin mound has three working parts:
- Septic tank. Settles solids.
- Dosing chamber. A pump (or siphon) sends measured doses of effluent to the mound under pressure.
- The mound. Small-diameter perforated laterals spread effluent over a bed of sand built up above the native soil.
Because the pump does the work gravity does in a conventional system, Neenah mound system repair usually starts in the dosing chamber.
Our Services
Mound Problems We Fix
Alarm sounding / pump not running
Failed pump, stuck or tangled float, tripped breaker, or a bad control panel. We test each and replace what failed.
Wet spots or seepage on the mound
Effluent breaking out on the side or toe of the mound points to clogged laterals, uneven dosing, a pump running too long, or solids carried over from the tank. Flushing laterals and correcting dosing often fixes it.
Odour around the mound or tank
Missing lids, a cracked riser or a vent problem. Usually a quick repair.
Erosion, settling or damage
Animals, vehicles or heavy equipment on the mound can crush laterals or expose the bed. We repair the cover and regrade.
A failed mound
When the sand or native soil underneath is clogged throughout, the mound has to be rebuilt. See mound system repair for what replacement involves.
Prevention
Maintenance That Prevents Most Repairs
Wisconsin's standard mound management plan calls for the effluent filter to be inspected every three years and the distribution laterals flushed every three years or as needed (Wisconsin DSPS mound management checklist). Regular pumping matters just as much, because solids carried over from the tank are what clog laterals and the sand bed.
Pumping
Neenah Septic Pumping Between Repairs
Not every visit is a repair. Neenah septic pumping keeps you current with Winnebago County, whose three-year maintenance includes pumping the septic tank and, on a mound, the pump chamber too (Winnebago County Sanitary Maintenance Program). Neenah is in Winnebago County, so the report goes to the Zoning Department, and the letter the county mails is a pumping notice. We measure sludge and scum, pump both chambers, clean the effluent filter and watch the pump run a full dose before we leave, so a tired pump shows up at a routine visit instead of as an alarm at night. For the visit in detail, read about our septic tank pumping.
Local Rules
Winnebago County Permits and Plan Review
Winnebago County has reviewed POWTS plans for one- and two-family homes itself since August 28, 2019, mound and at-grade designs included. If your Neenah mound system repair turns into a replacement, the plans go through the county Zoning Department rather than the state. We prepare the submittal and coordinate the soil evaluation.
Local Context
Neenah's Lakes and River
Neenah is bordered by Lake Winnebago, Little Lake Butte des Morts and the Fox River (Wikipedia: Neenah). Most of the city is sewered, so the mounds we work on are mainly on lots outside the sewer network. With so much shoreline nearby, a mound's location can be as tightly limited as its design. Wisconsin's setback table keeps a soil dispersal area, such as a mound, at least 50 feet from the ordinary high-water mark of a lake or stream, and a treatment tank at least 10 feet from it (SPS 383.43, Table 383.43-1). Those distances shape Neenah mound system repair whenever a mound has to be rebuilt or moved, and on a narrow lakeside lot they can decide whether a new mound fits at all.
Nearby Areas
Serving Neenah's Neighbours
Beyond Neenah mound system repair, we also provide emergency septic repair to neighbouring Menasha and Fox Crossing, and south along Lake Winnebago to Oshkosh, all in the same county permit system.
FAQ
Neenah Mound System Repair FAQ
How long does a mound pump last?
It varies with the pump, water use and how often it cycles. We check pump run time at each service so you can plan a replacement before it fails.
Can I drive or build on my mound?
No vehicles, sheds, pools or trees on the mound. Grass is the right cover. Heavy loads crush laterals and compact the sand.
Why is my mound wet in spring?
Some surface moisture after snowmelt is normal, but effluent seeping from the sides or toe is not. If it smells or stays wet, call us.
Do I need a permit to replace my mound pump?
A like-for-like pump replacement usually doesn't need a sanitary permit. Replacing the mound itself does. We'll confirm with Winnebago County.
Are you licensed for mound work?
Yes. Under Wisconsin's rules a mound counts as a POWTS, and our state licence covers pumping, inspecting and servicing those systems.