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The City of Plymouth has over 350 miles of water mains, 15 deep water wells with depths ranging from 302-473 feet, six storage facilities and 2 water treatment plants.
Well water naturally contains small levels of iron and manganese that can result in discolored water and result in staining as well as taste and odor complaints.
The city does filter water for iron and manganese, but occasionally low levels of 0-0.4ppm iron will bleed through. Plymouth water is extremely hard with hardness ranging from 20-24gpg (grains per gallon).
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 Plymouth Water Report
2008 Plymouth Water Report
2006 Plymouth Water Report
2005 Plymouth Water Report
| Contaminant | Levels Found |
Health Limit |
Potential Effect | Treatment |
|---|---|---|---|---|
| Alpha Particles | 5.7 | 0pCi/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Arsenic | 2.35 | 0ppb | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | Reverse Osmosis, Pureoflow, Arsenic Filters |
| Bromodichloromethane | 4 - 5.9 | 0ppb | Increased risk of cancer, damage to liver, kidneys, and nervous system | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Chloroform | 8.66 - 14 | 5.7ppb | Nervous system depression, increase in kidney and liver tumors | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Combined Radium | 0.98 | 0Ci/L | Increased risk of cancer | Reverse Osmosis, Pureoflow |
| Dibromochloromethane | 1.36 - 2.3 | 0.4 | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Dichloroacetic acid | 3.96 - 5.6 | 0ppb | Irritant and corrosive to the eyes, skin and respiratory tract | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Haloacetic Acids | 4 - 5.1 | 0ppb | Increased risk of cancer | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Radon | 579 | 1.5pCi/L | Increased risk of lung cancer | Reverse Osmosis, Pureoflow |
| Total Coliform Bacteria | 1% | 0% | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present | Pureoflow, Ultrafiltration |
| Total Trihalomethanes | 1.2 - 19.3 | 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 | 0.15 | 2ppm | Increase in blood pressure | Reverse Osmosis, Pureoflow |
| Chlorine | 0.49 - 1.95 | 4.0ppm | Eye/nose irritation; stomach discomfort | Reverse Osmosis, Pureoflow, DMT Systems, Carbon Filters |
| Fluoride | 1.1 - 1.2 | 4.0ppm | Bone disease (pain and tenderness of the bones); children may get mottled teeth | Reverse Osmosis, Pureoflow |
| Hardness | 20 - 24gpg | NA | Increased energy consumption, damage to plumbing, appliances, fixtures, clothing, and glassware | Pureoflow, DMT Systems, Water Softener |
| Iron | 0 - 0.4ppm | NA | Increased energy consumption, damage to plumbing, appliances, fixtures, clothing | Pureoflow, DMT Systems |
| Sodium | 12ppm | NA | Hypertension | Pureoflow, DMT Systems |
| Sulfates | 16.2 - 27ppm | NA | Catharsis, Dehydration from diarrhoea | Pureoflow, DMT Systems |
This information was compiled from Plymouth's water treatment reports, the Environmental Protection Agency(EPA), Minnesota Department of Health(DOH), World Health Organization(WHO), and Environmental Working Group(EWG).
