Water Quality in Middleton, WI
Middleton's water has 5 contaminants above health guidelines. We recommend using a certified water filter.
Utility
MADISON WATER UTILITY
People Served
272,000
MCL Violations
0
Last Updated
Jul 8, 2025
Quick Summary
Contaminants Detected
⚠️ Contaminants Above Health Guidelines (5)
Chlorine (Total)
What is Chlorine (Total)?
Chlorine is a chemical element with the symbol Cl and atomic number 17. It is a yellow-green gas at room temperature and is a strong oxidizing agent. Chlorine is commonly used in water treatment to kill bacteria and other pathogens, making water safe for drinking.
Health Effects
Exposure to chlorine can cause respiratory issues, skin irritation, and eye irritation. Ingesting high levels of chlorine can lead to gastrointestinal distress and other serious health problems.
Affected Organs
Common Sources
Chlorine (Free)
What is Chlorine (Free)?
Chlorine is a chemical element with the symbol Cl and atomic number 17. It is a yellow-green gas at room temperature and is a strong oxidizing agent. Chlorine is commonly used in water treatment to kill bacteria and other pathogens.
Health Effects
Exposure to chlorine can cause respiratory issues, skin irritation, and eye irritation. Ingesting chlorine can lead to gastrointestinal distress and other serious health problems.
Affected Organs
Common Sources
Radium 228
What is Radium 228?
Radium-228 is a radioactive isotope of radium that occurs naturally in uranium and thorium ores. It is part of the decay chain of uranium-232 and has a half-life of 5.75 years. Radium-228 can be found in groundwater and can contaminate drinking water supplies.
Health Effects
Exposure to radium-228 can lead to an increased risk of cancer, particularly bone cancer, due to its radioactive properties. Long-term exposure can also affect the kidneys and other organs.
Affected Organs
Common Sources
Radium 226
What is Radium 226?
Radium-226 is a radioactive isotope of radium, which is a naturally occurring element found in uranium ores. It is a decay product of uranium-238 and is known for its radioactive properties, emitting alpha particles and gamma radiation.
Health Effects
Exposure to Radium-226 can lead to serious health issues, including an increased risk of bone cancer and other malignancies. It can accumulate in bones and tissues, leading to long-term health effects due to its radioactivity.
Affected Organs
Common Sources
Total THMs
What is Total THMs?
Group of contaminants that form in drinking water systems when a disinfectant, typically chlorine, reacts with organic matter
Health Effects
Drinking water standards for total THMs are based on evidence of carcinogenicity in human and animal studies, as well as liver and kidney toxicity observed in animal studies. Individual THMs have been further associated with developmental, immune, spleen, and genotoxicity.
Affected Organs
Common Sources
Understanding the Data
This data comes from your local water utility testing. The bar charts compare detected levels against health guidelines (HGL). Contaminants above the health guideline are shown by default and may require filtration. All other tested contaminants are within safe levels and can be viewed by expanding the section above.
Recommended Water Filters for Middleton
Based on Middleton's water quality data, these NSF-certified filters are recommended to remove contaminants above health guidelines.
![GNRQ18NBN[1] GNRQ18NBN[1]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F61FxdBVXqoL._AC_SY606_.jpg&w=3840&q=75)
GE Appliances, a Haier Company
GNRQ18NBN[1] GNRQ18NBN[1]
NSF Certified:
Capacity
260 gal
Filter Life
1 mo
Flow Rate
0.5 gpm
Removes 23 contaminants:
Arsenic, Asbestos, Barium, Cadmium, Chlorine (Free) +18 more
GE Appliances, a Haier Company
GXRQ18NBN[1] GXRQ18NBN[1]
NSF Certified:
Capacity
260 gal
Filter Life
1 mo
Flow Rate
0.5 gpm
Removes 23 contaminants:
Arsenic, Asbestos, Barium, Cadmium, Chlorine (Free) +18 more
Aquion, Inc.
Rainsoft Rainsoft Ultrefiner Elite
NSF Certified:
Capacity
2251 gal
Filter Life
8 mo
Flow Rate
1 gpm
Removes 20 contaminants:
Arsenic, Barium, Cadmium, Chloramine, Chlorine (Free) +15 more
Solventum Purification Inc.
3MRO501[G] 3MRO501[G]
NSF Certified:
Capacity
15001 gal
Filter Life
50 mo
Flow Rate
0.5 gpm
Removes 22 contaminants:
Arsenic, Barium, Cadmium, Chlorine (Free), Chlorine (Total) +17 more
Frequently Asked Questions
Middleton's water has 5 contaminants above health guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Middleton's water.