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Wayzata Water Hardness & Drinking Water Guide

Wayzata City Water Background

The City of Wayzata provides it’s residents drinking water from three wells. Two draw water from Quaternary Buried Artesian aquifer (100 and 140 feet deep) and one draws water from the Prairie DuChien-Jordan aquifer (507 feet deep).

Wayzata Water Hardness

Wayzata water hardness ranges from 18-22gpg.  This is rated “extremely hard” by the USGS (hard water info).  A High Efficiency Water Softener or Saltless Softener can provide protection against hard water damage.

Rusty Discolored Water in Wayzata

Wayzata tap water may sometimes contain low levels of Iron and Manganese that bleed through the treatment system.

Low levels may occasionally result in discolored water, staining, and a metallic taste and odor. Heavy construction, and water main breaks can dislodge the mineral buildup in water lines. This can result in major discoloration, and chunks of debris in water.

Wayzata Water Quality Reports

The City of Wayzata does regular water testing and publishes the results in Annual Drinking Water Reports. These reports explain which water contaminants, and what levels have been found:

2011 Wayzata Water Report
2010 Wayzata Water Report
2008 Wayzata Water Report
2005 Wayzata Water Report
2002 Wayzata Water Report

The EPA has established two standards for additional contaminants in tap water:

MCL: Maximum Contaminant Level – The maximum allowable level of a certain contaminant, aka the “Legal Limit”

MCLG: Maximum Contaminant Level GOAL – The level where studies have found ZERO HEALTH RISKS, aka the “Health Limit”

All water contaminants meet the EPA’s “Legal Limit”. Certain water contaminants exceed the EPA’s Health Limit and have been highlighted:

Inorganic Contaminants

Inorganic contaminants include salts and metals like Hard Water and Copper. Inorganics are mostly consumed through drinking water, and most do not easily pass through skin. Carbon Filters (refrigerator and faucet filters) have virtually ZERO impact on these contaminants. Reverse Osmosis and the LINX Evolution are very effective at removing inorganic contaminants.

Contaminant Levels Found Health Limit Legal Limit Potential Effects
Arsenic 3.1 – 6.46 0 10ppb Skin damage or problems w/ circulatory systems, increased risk of cancer
Barium 0.12 – .2 2 2ppm Increase in blood pressure
Fluoride 1.1 – 1.3 4 4ppm Bone disease (pain and tenderness of the bones); children may get mottled teeth
Hard Water 18 – 22gpg NA NA Damage to plumbing, appliances, glassware
Iron 0 – 0.3ppm NA NA Damage to plumbing, appliances, water heaters, laundry
Mercury 0.02ppm 2 2ppm Kidney damage
Nitrate 0.16 – 0.73ppm 10 10ppm Infants below the age of 6 months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.
Sodium 7.6 – 9.6ppm NA NA Hypertension
Sulfates 22 – 29ppm NA NA Catharsis, Dehydration from diarrhea

Organic Contaminants

Organic Contaminants can be from natural sources like algae, or man-made like Acetone. Many organic chemicals easily pass through the skin, and make a Pureoflow, DMT Hybrid System, or Whole House Carbon Filter a good preventative tool.

Contaminant Levels Found Health Limit Legal Limit Potential Effects
Toluene 0.37 – 1.1 100 100ppb Nervous system, liver, or kidney problems
Xylenes 0.07 – 0.2 1.8 100ppb Nervous system damage

Disinfectants and Disinfection Byproducts

Disinfectants are added to control bacteria. When disinfectants like Chlorine react with other water contaminants, a new class of compounds are formed called “Disinfection Byproducts. Many of these chemicals can enter the body through inhalation, absorption through skin, and through drinking water. A Whole House Carbon Filter is a good preventative tool in addition to a Drinking Water System for these compounds.

Contaminant Levels Found Health Limit Legal Limit Potential Effects
Bromodichloromethane 2.06 – 9.0 0 80ppb Increased risk of cancer, damage to liver, kidneys, and nervous system
Chlorine 0.3 – 1.3 4 4ppm Eye/nose irritation; stomach discomfort
Dibromochloromethane 0.9 – 4.5 0.4 80ppb Increased risk of cancer
Dichloroacetic Acid 2.53 – 4.2 0 60ppb Irritant and corrosive to the eyes, skin and respiratory tract
Haloacetic Acids 2.2 0 60ppb Increased risk of cancer
Tetrachloroethylene 0.1 – 0.3 0 5ppb Liver, kidney or central nervous system problems; increased risk of cancer
Trihalomethanes 3.9 – 22.7 0 80ppb Liver, kidney or central nervous system problems; increased risk of cancer


Radionuclides may occur naturally, or be the result of oil and gas production or mining activities. These can be inhaled, or consumed through drinking water.

Contaminant Levels Found Health Limit Legal Limit Potential Effects
Alpha Emitters 6.8 – 7.9 0 15.4pCi/L Increased risk of cancer
Combined Radium 2.8 – 2.9 0 5pCi/L Increased risk of cancer
Radon 89 – 4750 0 NA Increased risk of cancer

This information was compiled from Wayzata’s water treatment reports, the Environmental Protection Agency(EPA), Minnesota Department of Health(DOH), World Health Organization(WHO), and Environmental Working Group(EWG). Please contact us if there are any missing contaminants, or levels that differ from those outlined on this page.

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