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1) A property owner desires to build a structure in an area where public sanitary sewer service is not available.
2) Anytime a property owner desires to have, or is required to have, an existing failing POWTS replaced.
3) Anytime a property owner proposes a significant change to the primary living structure or place of business. Land divisions, conditional use requests, and change of use (for business establishments) may also require an upgrade or replacement of the existing POWTS.
When people do all their laundry in one day, the high (peak) flow will cause the drainfield to go anaerobic (without air). Your POWTS performs best in aerobic conditions. In aerobic (with air) conditions there are a lot more bacteria that are working to digest the organics (among other things) in the wastewater.
The peak flows that flow into the septic tank from the home cause the settled solids to re-suspend themselves in the wastewater. During re-suspension these solids get pushed out of the septic tank and end up in your piping network or drainfield. When these additional solids end up in the drainfield, it will accelerate the failure rate of the drainfield. In other words, the drainfield will fail much quicker than a POWTS that does not experience frequent peaks flows.
All septic tanks designed from about 1978 to present were designed to allow for a 24-hour settling period for any solids or suspended solids entering the tank. By creating excessive peak flows the solids settling cycle will be short-circuited and cause most suspended solids to leave the septic tank too soon.
To help minimize the peak flow effects generated from the laundry process, homeowners should consider purchasing water conserving, low flow front load wash machines. They typically will use about 1/3 of the amount of water, per load, as the standard top load wash machines.
After the soil and site evaluations have been conducted by the soil tester the results of that soil and site evaluation are to be sent to the County reviewing authority.After the soil and site evaluations have been reviewed by the county reviewing authority, and are found to be acceptable for completeness, the evaluations are then filed for use with a future sanitary permit for the property tested. The soil and site evaluations (soil tests) are good for as long as the administrative rule that governs them remains in affect. If there is a significant rule change that effects the soil and site evaluation process or results of previously completed tests then a new test may have to be done.
Another example might be a property owner wants to put up an outbuilding and also wants to put a bathroom in it for a convenience to themselves. A County sanitary permit can be issued so long as the existing POWTS is a code compliant installation previously inspected by Staff of this department.
For further details of County sanitary permit issuance and when they may be necessary, you can contact the Kenosha County Department of Planning and Development.
As far as system performance is concerned, a pressurized system typically will perform better than one that is not, because the wastewater is dosed over the entire absorption area versus being distributed over a small area as in the conventional gravity system.
If they do not have these credentials then they will not legally be able to install a POWTS in the State of Wisconsin. You can check the yellow pages for POWTS installers or contact Kenosha County Department of Planning and Development for a list of POWTS installers.
Go to “Contacts” page of this website for licensing web link.
If a grinder were added to the kitchen sink, the disposal should be used sparingly only. Also, if you are intending to put in a disposal, you should let your POWTS installer know so that a modification can be made to the proposed treatment tank. The treatment tank should at least be two-chambered and have an effluent filter installed on the septic tank outlet. You should give serious consideration to oversizing the septic tank beyond the minimum Code requirements.
By following these simple procedures your POWTS may not experience premature failure due to the additional settling time provided by your treatment tank.
Effluent filter alarms are available for people who are interested in that extra degree of security for that “just in case” event of sewage backing up into the basement when the effluent filter is clogged. A clogged filter will restrict the amount of wastewater leaving the septic tank, which causes the wastewater level to rise in the septic tank.
When the wastewater level rises above its normal flow level it will begin to back up into the piping network coming from the structure.
There typically are more than enough bacteria in the wastewater generated daily to do a sufficient job of digesting the biodegradable material in the waste stream. There comes a point where the solids that remain in the tank can no longer be digested and will not be able to undergo further digestion.
If you use strong cleansers conservatively and feel the need to add a digesting aid to assist the bacteria in your septic tank you could add several cakes of yeast to boost the digestion process for a while.
The statement of “saving costs” on pumping your septic tank does not appear to make sense for people living in Wisconsin. All septic systems installed within the last 25-30 years in the State of Wisconsin are required to have the septic tanks pumped at least every 3 years. Where would the cost savings come from?
After determining the DWF the POWTS installer can size the necessary treatment tank(s) properly. After reviewing the soil and site evaluation report, that was performed by the certified soil tester, the installing plumber can then determine the minimum size of absorption field required which is based on the soil load rate that is specified on the report form.
The property owner will have to have another powts evaluation done because there is specific administrative code language that specifies when a powts evaluation is required. As part of those requirements there is more detailed information that will need to be submitted to the permitting authority for review. Some of the submitted information that will be required is soil test boring data that will determine whether the existing powts can meet the minimum depth of separation to limiting conditions. The typical limiting condition in this area is seasonal saturation depth (seasonal water table).
The seasonal saturation depth can be observed by specific soil feature characteristics found in the various layers found in the soil. A soil pit is typically required to perform a soil test. The soil boring will be dug near the existing powts (drainfield) and the soil characteristics/properties will be described and recorded on a soil test report form. The evaluator who performs the soil test and provides the rest of the required information for the existing powts evaluation has to be licensed by the State of Wisconsin Department of Safety & Professional Services.
The powts evaluation for real estate sale transactions does not require licensure and does not have a specific set of standards or requirements to follow and therefore the data in their reports can be less specific and more general. It is for these reasons – required standards & licensing, that another powts evaluation is needed to be done to obtain a permit for a building addition/renovation.
If you want to put plantings on or near your POWTS you should plant species of plants that have a herbaceous root system. If you select plants that have a woody root system and plant them very close to, or on top of, the absorption field it will experience root problems. The roots from this plant group tend to grow or migrate in the direction of a moisture source and work their way into the piping network. Once inside the network the roots begin to clog the piping. Given sufficient time the roots will cause system failure. The alternative to a woody root plant species could be flowers or wildflower seeding.