City of Plymouth Wisconsin Plymouth Wisconsin City Government Fri, 29 Aug 2014 17:57:32 +0000 en-US hourly 1 Plymouth Public Library Closed for Final Re-carpeting Stage Mon, 11 Aug 2014 16:07:57 +0000 Tanya The Plymouth Public Library will be closed from Monday, August 18th,
through Monday, September 1st.
The library will be finishing its re-carpeting project during those two
weeks.  The bookdrop will be open for returns.

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What Is One Way We Can Reduce Our Sewage Bill? Tue, 22 Jul 2014 14:52:17 +0000 Tanya The wastewater that collects in the sanitary sewer is not the only source of water that arrives at the wastewater treatment plant.  Infiltration and inflow of rainwater, snow melt and ground water can get in the collection system through cracks in sanitary sewers and home laterals, down spouts, sump pumps, and leaks into manhole covers and infrastructure.

The water that runs through the street or your yard during a snow melt or rain event should not collect in the sanitary sewer. It is routed to storm sewers which ultimately flow to the Mullet River.

Your home contains a collection system around its foundation so that water does not enter your basement. This water collects in a sump in your basement and a pump in that pit should be pumping the water out on the ground of your yard so that it flows to the storm sewer. It should not be connected to the sanitary sewer. (The City of Plymouth does have an ordinance prohibiting the discharge of the sump pump into the sanitary sewer).

“So who cares if my groundwater is pumped into the sanitary sewer? I don’t want that water running through my yard. And besides, my sump pump runs all winter long and I don’t need water freezing in my yard”.  The City of Plymouth does have sub divisions that are in areas that contain a fair amount of groundwater and the sump pump does run all winter long. Contact the Plymouth Utilities and we can see what we can do for you. There are methods to route the water to the storm sewer.

All of this extra water causes more difficulty in operating the wastewater treatment plant in wet weather conditions and at this point in time would be the main cause of an upgrade to the facility that will cost millions of dollars. It also costs more energy to move the extra water through the treatment plant. Each homeowner and business can have an impact by all of us working together to reduce inflow and infiltration so we can keep our costs down.

chart image for 7-22-14 posted article

The left column represents wastewater flow to the treatment plant in million gallons per day (blue) and of water pumped out of the ground each day to the homes and businesses in Plymouth (green). As you can see, the rain events (red) contribute to increases in flow to the wastewater treatment plant, especially in the spring when the ground begins to thaw and it is saturated with water. The more the blue line elevates the more likely we will need a new upgrade to the wastewater plant.

By:  Mike Penkwitz, Wastewater Treatment Plant Superintendent



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Antiques Appraisal Event at Plymouth Public Library Thu, 08 May 2014 13:25:49 +0000 Tanya Library Antiques event

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Foundation Funding Helps Create Downtown Initiative Thu, 01 May 2014 20:14:48 +0000 Tanya Downtown Business Manager Pilot Project

Plymouth, WI – A $150,000 grant from the Lakeshore Community Foundation will benefit a joint two-year downtown pilot project between the Plymouth Chamber of Commerce and the Plymouth Redevelopment Authority.  The grant is being funded by the Plymouth Downtown Community Initiatives Fund of the Lakeshore Community Foundation.

The joint project will sponsor a part-time Downtown Business Manager to help create focus on the downtown for an initial two-year period.  The pilot project will identify the needs of downtown businesses, assist in marketing the downtown, and better connect downtown business owners with the resources and information that they need to continue to be successful.  The downtown development assistance is meant to spark a renewed interest in downtown Plymouth and encourage a community discussion about long-term support and community collaboration in the downtown.  The Plymouth Chamber of Commerce and Plymouth Redevelopment Authority (RDA) will jointly hire the Downtown Business Manager.

Christine Thill, Chamber President “This is a wonderful opportunity to merge efforts with a common goal – a strong and vital downtown business community.  The Chamber is very excited to participate in this innovative pilot program.”

Lakeshore Community Foundation, Inc. was created in 2009 to enable the people of the Lakeshore Area of East Central Wisconsin to make lasting charitable contributions to their community. As a tax-exempt, public charity, it receives, administers, and distributes gifts from individuals and organizations for the long-term benefit of the Lakeshore Area. For more information about the Lakeshore Community Foundation, please visit

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Utilities Fri, 11 Apr 2014 21:18:40 +0000 cringel 0 Saturday Yard Waste Drop Off Begins April 19 Thu, 10 Apr 2014 14:35:43 +0000 Tanya Residents of the City of Plymouth may drop off yard waste at the Municipal Garage, 1004 Valley Rd. on Saturdays beginning April 19.  Hours are from 9 am to 3 pm.  Weekday yard waste drop off hours are 7:15 am to 3:15 pm.

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End of Freezing Water – Notice Tue, 01 Apr 2014 19:24:40 +0000 Tanya With the warmer weather and recent rain along with this week’s weather forecast we are ending the requirement for running water to prevent freezing water laterals.

Thank you for your cooperation during this unusually cold winter. If you have any questions contact me at 893-1471.


 William Immich, P.E.

City of Plymouth

Director of Public Works / City Engineer

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So what is wastewater and how does it get to the wastewater treatment plant in Plymouth? Wed, 12 Mar 2014 20:12:00 +0000 Tanya A homeowner, renter, industry or restaurant purchases water from the Plymouth Utilities and that water is pumped into their building. This water comes from deep wells in the City of Plymouth. The water is then consumed, used in the kitchen, used in the bathroom, used for the production of materials or used for the cleaning of production equipment. Those uses of the water make it dirty to various degrees and it is flushed down a toilet or runs into a drain.

The journey then begins to the wastewater treatment plant.

The wastewater flows into one pipe at the lowest point of the building and then makes a 90 degree turn and travels out to the street. This four inch pipe is called the lateral and the building owner owns it. Each one of these pipes is connected to an eight inch pipe that is located in the middle of the street.  A home or business is part of a subdivision and these subdivisions contain more than one eight inch pipe. These pipes from a subdivision empty into a 10 or 15 inch pipe which can handle a larger volume of flow.

These larger pipes on the west side of the City connect to a 30 inch pipe at the intersection of Clifford and South Streets.  The larger pipes on the east side flow to the southeast and collect in a 15 inch pipe at a lift station on County Road PP.  This wastewater is pumped to the 30 inch pipe on South Street just north of the wastewater treatment plant on County Road PP.  All of the flow then flows to the treatment plant.

The wastewater treatment plant is located in one of the lowest elevations in the City and so the waste is able to flow downhill or by gravity. (Three lift station in the city lift the water from low areas and pump it into sewers that flow downhill).

Some comparisons:         One person typically uses 50 gallons of water per day and an industry can use 60,000 gallons per day. The west side of the City generates about 75% of the wastewater and the east side generates 25%. An industry may have a six to an eight inch pipe leaving its building.

All of this flow adds up to an average daily total of 1,700,000 gallons per day.

Sewer laterals image   Picture and article by Mike Penkwitz, Plymouth Wastewater Treatment Plant Supervisor

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Happy Birthday, Dr. Seuss! Fri, 28 Feb 2014 21:02:50 +0000 Tanya Dr Suess Library Flyer

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What Do You Know About…. Plymouth’s Wastewater Treatment Plant Staff? Thu, 20 Feb 2014 21:21:40 +0000 Tanya The wastewater treatment plant in Plymouth is operated by four individuals. One is the wastewater superintendent and the other three are wastewater treatment plant operators. All four are Wisconsin Certified Grade 4 Wastewater Operators and they all have an associate degree in wastewater technology.

There is at least one operator at the plant every day of the year. Their duties include the following:  lab analysis, operations, equipment maintenance, sludge hauling, maintenance of the buildings and grounds and industrial monitoring.

The State of Wisconsin defines a wastewater treatment plant as a Grade 1, a Grade 2, a Grade 3 or a Grade 4. Grade 4 is the highest classification and most of your bigger treatment plants fall into that category. Because of the size of the river (Mullet) Plymouth discharges to and because of the amount of industry in the community the treatment plant is a Grade 4. It takes more effort for an operator to acquire a Grade 4 certificate than to acquire a Grade 1 certificate. The certificate must be renewed every three years with 24 hours of continuing education credits.

Three of the current operators have a combined 76 years of experience at the Plymouth wastewater treatment plant. The fourth individual was hired last year due to a retirement. It takes about five years to be comfortable with all facets of the operation and maintenance of the plant. And the three with the 76 years can relate a lot of information and stories from their days at the plant.

Since 1956, 15 individuals can call themselves a Plymouth Wastewater Treatment Plant Operator.

by: Mike Penkwitz, Plymouth Wastewater Treatment Plant Superintendent

WWTP Operators

From left to right:  WWTP Superintendent Mike Penkwitz, Operators John Daul, Chrtistopher Duwe and Aaron Hafermann.

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