Jefferson County Water

We at Guthrie and Frey know that almost 20 years ago, Wisconsin legislators created a Nonprofit Source Water Pollution Abatement Program in order to control surface water runoff. But did you know that this program prioritizes lakes and streams to focus on land use and activities that impact water quality? One of these lakes being, Rock Lake. In 1995, Rock Lake, located in Jefferson County joined this list with priority designation, targeting the 12-square-mile watershed area that drains into the lake.

The 12 square mile area that drains into Rock Lake is known as the watershed. Rock Lake is classified as a drainage lake; meaning the lake has both an inlet and an outlet; with the inlet consisting of mostly stream drainage. Drainage lakes tend to vary in water quality due to runoff, and human activity near the watershed. Because of this unique watershed circumstance, Jefferson county has unique water challenges.

Water Challenges in Jefferson county:

While the Abatement program has come a long way, there is still a long way to go. Due to the nature of runoff water, contaminants – such as iron, arsenic, nitrates, and tannins – find their way into groundwater. Most Jefferson County homes get their water from deep wells that are susceptible to these contaminants.

Jefferson County has 7 municipal water systems: Fort Atkinson, Jefferson, Johnson Creek, Lake Mills, Palmyra, Waterloo, and Watertown. However, Fort Atkinson and Palmyra do not have a Wellhead protection plan; meaning there are no pollution prevention measures in place in the public water supply wellhead areas. Even though a Wellhead Protection Plan is put in place for the remaining 5 municipalities, there are cases where only a plan is in place for some wells in the area – not all. You may be wondering if your family and pets’ water is safe?

Guthrie and Frey can assist in protecting your family and pets from these water contaminants through testing the water entering your faucets, sinks, showers, etc., and suggesting a professional water treatment plan.

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The Effects of an Iron Filter

  • No more iron stains
  • No more musty taste or bad odors.
  • Protection against rust build-up and corrosion
  • Longer product life and improved performance.

What’s in my water?

ContaminantAbout the ContaminantSigns of the Contaminant
IronAlthough small amounts do not have a negative effect on your health, Iron is a contaminant that contains bacteria that feed off it. However, Large amounts of iron can be hazardous to your health.  Iron does not blend well with soap, leaving residue on your bathtub, appliances, and skin (causing clogged pores).Metallic taste which carries into your food and beverages

Leaves orange/red stains on anything the water touches

Iron residue build up can cause pipes to clog, thus decreasing water pressure in your home.
Odor If your water has an odor, this means there is a contaminant in the water.Rotten egg smell
ArsenicArsenic has been found in several Ozaukee County homes causing negative effects on homeowner’s health.The only way to detect arsenic is to have your water professionally tested.
TanninsTannins can be a sign that your water is largely coming into your home from surface water. Although tannins is not harmful on its own, if it can travel from surface water to your groundwater source, so can pathogens and bacteria.Tannins cause a yellow stain on fixtures and laundry.
NitratesNitrates are formed naturally in surface and groundwater. Nitrogen is essential for all living things, but when consuming higher levels through drinking water, it can be hazardous especially to infants, and pregnant women. Nitrate spread entering private wells can come from a few different sources, such as, manure spreading, agricultural fertilizers, legume cropping systems, and septic systems.Like arsenic, the only way to tell if you have nitrates in your water is to have it professionally tested.

Hard Water in Jefferson County

Hard water is not uncommon in Wisconsin, and although it is not likely to have a negative effect on human health (in small amounts), it does cause a buildup in appliances and pipes within your home. If the buildup becomes too much, it can cause problems in appliances, sometimes resulting in a full replacement. Knowing how hard your water is can help prevent these issues from arising. Water is measured in grains of hardness – the higher the number, the harder your water is. Jefferson County water typically ranges from 20-50 grains of hardness. Whereas soft water is typically below 1 grain of hardness, helping prevent appliance issues and failures.

A Few Reasons why Jefferson County Loves Guthrie & Frey

Extensive Warranties

Rental rates will never be raised

Free Installation

Competitive pricing and rent-to-own options available

From the Senior Technician in Jefferson County:


What’s the difference between well water and city water?


Depending on where you live in Jefferson county, your water will be sourced from various different areas (city water, private well, etc.). No matter where your water is sourced from, it has its unique pros and cons. Consider scheduling a water test to see what’s in your water.


Does Jefferson County have hard water?


Yes! Typically, in Jefferson County, we see a range from 20-100 grains of hardness in the water. Soft water is less than 1 grain of hardness. To see what level your water is at, schedule a free water test!


Is hard water bad?


Hard water does not have a negative effect on your health, however, the contaminants cause buildup on appliances, causing them to fail prematurely. Additionally, hard water will leave a film or red/orange stain on anything it touches.

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Recommended Water Treatment Techniques for Jefferson County


GF Series Water Softener System

Hard water can be much more problematic than you think. It can cause buildup of mineral scale inside your appliances and plumbing.

Ideal For:

  • Preventing scale buildup in home kitchens and bathrooms.
  • Improving the taste and texture of the water in your home.
  • Saving money on plumbing and appliance maintenance.
  • Ensuring cleaner clothes and dishes via cleaner water.

GF Twin Alternating Series: High-Efficient Water Softener

The Guthrie & Frey Twin Alternating Water Softener provides a continuous supply of softened water with no downtime for regeneration.

Ideal For:

  • Robust and efficient solutions
  • Reducing mineral scale and soap usage.
  • Energy efficient consumption of water-using equipment.
  • Reducing buildup in appliances like dishwashers and washing machines.

Iron Curtain Junior

Filter iron and reduce rotten egg odor, all without the use of chemicals.

Ideal For:

  • Low-cost of operation.
  • Highly oxygenated water.
  • Custom designs for larger homes.
  • Economical option for moderate iron and odor.
For Your Health

Reverse Osmosis System

If you replace the water your body needs by drinking tap water, your body is forced to act as a filter—straining out contaminants which can lead to health problems, including cancer, kidney damage, miscarriage, and gastrointestinal upsets. By contrast, a reverse osmosis water filter can distill your tap water to 99.9% pure!

Know The Facts

Arsenic Water Treatment

Arsenic is an element that occurs naturally in soil and bedrock. Traces of arsenic can also be found in groundwater, lakes, rivers and ocean water.

What people are saying about Guthrie & Frey in Jefferson County

“We have been using Guthrie & Frey for over 16 years. They are fantastic. Very responsive, friendly and great workmanship.”

Greg V.

“We use Guthrie & Frey for both our home and business. They are wonderful to work with; their service is impeccable! I highly recommend them for your water needs!”

Angela T.

“Wow! We have just had a wonderful experience buying a new water softener and iron filtration for our home. First off the young man who came out to the house to do the water test and make an assessment was friendly as can be and answered all of my questions in an easy to understand manner. There was no hard sell. He explained the pros and cons of different options and told me what the results would be. We enjoyed his visit so much we decided to purchase with your company. I’m thrilled to report the installation was wonderful as well! The guys who installed were super friendly, lots of smiles and great even though I had three barking dogs. LOL. They worked hard, answered my questions and cleaned up so well after they were here I couldn’t even tell what occurred. Thank you again, we will definitely recommend you to all of our friends and neighbors. Also a quick thumbs up to the nice people in the office who were great to work with as well. It’s so nice to speak with upbeat friendly people on the phone.”

Lisa H.