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The Chanhassen city water department opened in 1965, and now serves up to 8.65 million gallons of tap water a day to nearly 7,000 homes and businesses.
Chanhassen's water comes from deep wells that contain natural elements like iron, manganese, and calcium, in addition to less desirable elements like arsenic.
Recently a gravity filtration system was implemented to remove the iron and manganese that have caused orange/brown stains for so many years. Once treated, the Department of Health requires the addition of chlorine and fluoride to the water storage reservoirs.
The EPA has established two standards for additional contaminants in tap water:
MCL: Maximum Contaminant Level - The maximum allowable level of a certain contaminant
MCLG: Maximum Contaminant Level GOAL - The level where studies have found ZERO HEALTH RISKS, aka the "Health Limit"
Certain contaminants that absorb easily through your skin have been highlighted in orange. For those items, a Point of Entry (POE) system is recommended to treat all the water for your home/business.
2009 Chanhassen Water Report
2008 Chanhassen Water Report
2007 Chanhassen Water Report
2006 Chanhassen Water Report
| Contaminant | Levels Found |
Health Limit |
Potential Effect | Treatment |
|---|---|---|---|---|
| Alpha Particles | 3.82 - 14.9 | 0pCi/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Arsenic | 1.38 - 11.5 | 0ppb | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | Reverse Osmosis, Pureoflow, Arsenic Filters |
| Bromodichloromethane | 0.08 - 0.7 | 0ppb | Increased risk of cancer, damage to liver, kidneys, and nervous system | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Combined Radium | 1.8 - 5.9 | 0Ci/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Dichloroacetic acid | 0.26 - 1.8 | 0ppb | Irritant and corrosive to the eyes, skin and respiratory tract | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Di(2-ethylhexyl) phthalate | 0.28 - 1.4 | 0ppb | Endocrine disruptor, damage to liver and testes, reproductive effects, cancer | Reverse Osmosis, Pureoflow |
| Radon | 210 - 244 | 1.5pCi/L | Increased risk of lung cancer | Reverse Osmosis, Pureoflow |
| Total Trihalomethanes | 0.4 - 26 | 0ppb | Liver, kidney or central nervous system problems; increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Contaminant | Levels Found |
Health Limit |
Potential Effect | Treatment |
|---|---|---|---|---|
| Barium | 144.72 - 262 | 200ppb | Increase in blood pressure | Reverse Osmosis, Pureoflow |
| Chlorine | 0.5 - 1.5 | 4.0ppm | Eye/nose irritation; stomach discomfort | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Chloroform | 0.42 - 2.9 | 5.7ppb | Nervous system depression, increase in kidney and liver tumors | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Ethylbenzene | 111.5 - 400 | 700ppb | Drowsiness, fatigue, headache, mild eye and respiratory irritation, damage to the liver, kidneys, central nervous system | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Fluoride | 1.03ppm | 4.0ppm | Bone disease (pain and tenderness of the bones); children may get mottled teeth | Reverse Osmosis, Pureoflow |
| Hardness | 18gpg | NA | Increased energy consumption, damage to plumbing, appliances, fixtures, clothing, and glassware | Pureoflow, DMT Systems, Water Softener |
| Iron | 0.1 - 0.3ppm | NA | Increased energy consumption, damage to plumbing, appliances, fixtures, clothing | Pureoflow, DMT Systems |
| Isopropylbenzene | .07 - 1.3 | 700ppb | Skin and eye irritant, Long term effects include increased liver, kidney, and adrenal weights | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Mercury | 0 - .01 | 2ppb | Kidney damage | Reverse Osmosis, Pureoflow |
| Nitrates | 0 - 0.1 | 10ppm | Infants below the age of six months could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and "blue baby" syndrome. | Reverse Osmosis, Pureoflow |
| Styrene | 0.17 - 3 | 100ppb | Liver, kidney, or circulatory system problems | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Toluene | 0.69 - 11ppb | 150ppb | Nervous system, kidney, or liver problems | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Xylenes | 2.07 - 35ppb | 1,800ppb | Nervous system damage | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
This information was compiled from Chanhassen's water treatment reports, the Environmental Protection Agency(EPA), Minnesota Department of Health(DOH), World Health Organization(WHO), and Environmental Working Group(EWG).
