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The City of Lakeville provides water to its residents from a groundwater source: 17 wells ranging from 460 to 864 feet deep. The wells draw water from the Prairie DuChien/Jordan aquifer and the Franconia-Ironton-Galesville formation.
Lakeville's water treatment plant was built in 1998, and has five water towers and one ground storage tank that store a total of 8.85 million gallons of water.
Lakeville's water hardness ranges from 18-19 grains, which is considered extremely hard and requires a water softener. Manganese levels exceed the recommended level of 50ppb, and may cause black stains unless treated by a filter.
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 Lakeville Water Report
2008 Lakeville Water Report
2007 Lakeville Water Report
2006 Lakeville Water Report
2005 Lakeville Water Report
| Contaminant | Levels Found |
Health Limit |
Potential Effect | Treatment |
|---|---|---|---|---|
| Alpha Emitters | 7 - 13.25 | 0pCi/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Arsenic | 1.02 | 0ppb | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | Reverse Osmosis, Pureoflow, Arsenic Filters |
| Bromodichloromethane | 2.62 - 4.4 | 0ppb | Increased risk of cancer, damage to liver, kidneys, and nervous system | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Chloroform | 8.97 - 17.0 | 5.7ppb | Nervous system depression, increase in kidney and liver tumors | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Combined Radium | 2.3 - 3.8 | 0pCi/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Dibromochloromethane | 0.68 - 0.9 | 0.4ppb | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Dichloroacetic acid | 3.23 - 5.0 | 0ppb | Irritant and corrosive to the eyes, skin and respiratory tract | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Haloacetic Acids | 5.4 - 8.0 | 0ppb | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Manganese | 64ppb | 50ppb | Black staining, increased energy consumption, damage to plumbing, appliances, fixtures, clothing, decreased IQ in children | Pureoflow, DMT Systems |
| Radon | 290 | 1.5pCi/L | Increased risk of lung cancer | Reverse Osmosis, Pureoflow |
| Total Coliform Bacteria | 2% | 0% | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present | Pureoflow, Ultrafiltration |
| Total Trihalomethanes | 9.5 - 22.3 | 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 | 0.23 | 2ppb | Increase in blood pressure | Reverse Osmosis, Pureoflow |
| Chlorine | 0.46 - 1.39 | 4.0ppm | Eye/nose irritation; stomach discomfort | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Fluoride | 1.1 - 1.3 | 4.0ppm | Bone disease (pain and tenderness of the bones); children may get mottled teeth | Reverse Osmosis, Pureoflow |
| Hardness | 18 - 19gpg | NA | Increased energy consumption, damage to plumbing, appliances, fixtures, clothing, and glassware | Pureoflow, DMT Systems, Water Softener |
| Mercury | 0.04 | 2ppb | Kidney damage | Reverse Osmosis, Pureoflow |
| Monochloroacetic acid | 3.77 - 10.3 | 70ppm | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Sodium | 4.4 - 9.9ppm | NA | Hypertension | Pureoflow, DMT Systems |
| Sulfate | 7.02 - 19ppm | NA | Catharsis, Dehydration from diarrhea | Pureoflow, DMT Systems |
| Trichloroacetic acid | 4.24 - 5.5 | 20ppm | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
This information was compiled from Lakeville's water treatment reports, the Environmental Protection Agency(EPA), Minnesota Department of Health(DOH), World Health Organization(WHO), and Environmental Working Group(EWG).
