The Power of Information

National Drinking Water Database


Edina - Minneapolis, MN


Serves 48,156 people - Test data available: 2004-2010

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the Minnesota Department of Health- Environmental Health Division. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results. Water utilities nationwide detected more than 300 pollutants between 2004 and 2009. More than half of these chemicals are unregulated, legal in any amount. Despite this widespread contamination, the federal government invests few resources to protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes test results for this utility and lists potential health concerns.

 
This Drinking Water System
National Average
Exceed Health GuidelinesTests showing chemicals at concentrations above health guidelines established by federal and state health agencies. These guidelines are typically set at a levels that pose no significant health risk.
12 chemicals
4
Health Standard ExceedencesChemicals detected at concentrations above the legal limit, the Maximum Contaminant Level (MCLs) established by the U.S. EPA. Most MCLs are based on annual averages, so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.
0 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
30 chemicals
8
Tests ConductedThe total number of number of water quality tests conducted by water utilities and recorded in data provided by the state water agency.
4,322 tests
420

Contaminants Exceeding Health Guidelines

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
BromodichloromethaneBromodichloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.2.42 ppb
7.9 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
80 ppb
TrichloroethyleneTrichloroethylene is used to remove grease from fabricated metal parts and in the production of some textiles; this pollutant comes from metal degreasing sites, metal finishing and rubber processing industries.0.3 ppb
0.9 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
5 ppb
DibromochloromethaneDibromochloromethane is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.23 ppb
5.2 ppb
Yes
0.4 ppb
No
80 ppb
Vinyl chlorideVinyl chloride is a chemical used for production of PVC plastic; it contaminates drinking water due to leaching from PVC pipes and discharges from plastics manufacturing.0.38 ppb
1.4 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
2 ppb
Alpha particle activityAlpha particles are a form of radiation released from mining waste pollutants and natural sources.6.18 pCi/L
9.3 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
No
15 pCi/L
Total trihalomethanes (TTHMs)Total trihalomethanes constitute the sum of four disinfection byproducts: chloroform, bromodichloromethane, dibromochloromethane, and bromoform.7.23 ppb
24 ppb
Yes
9.8 ppb
No
80 ppb
BromoformBromoform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.0.2 ppb
1.43 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
80 ppb
BenzeneBenzene is a petroleum chemical that contaminates drinking water due to emissions from petroleum and chemical industries, leaching landfills and gas storage tanks.0.04 ppb
0.3 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
5 ppb
Dichloroacetic acidDichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.53 ppb
4 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
60 ppb
ChloroformChloroform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.3.37 ppb
13 ppb
Yes
5.7 ppb
No
80 ppb
Arsenic (total)Arsenic contaminates drinking water due to mining runoff, erosion of natural deposits, emissions from glass and electronics processing and the use of arsenical compounds as wood preservatives and pesticides.1.21 ppb
3.46 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
10 ppb
TetrachloroethyleneTetrachloroethylene (perc) is a common soil and groundwater contaminant used in dry cleaning and as a solvent in automotive and metalworking factories and other industries.<0.01 ppb
0.05 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
5 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Other Detected Contaminants

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
cis-1,2-Dichloroethylenecis-1,2-Dichloroethylene is a pollutant discharged by various industrial chemical factories from the manufacture of plastic wrap, adhesives and synthetic fiber.2.7 ppb
7.38 ppb
No
70 ppb
No
70 ppb
trans-1,2-Dichloroethylenetrans-1,2-Dichloroethylene is a synthetic chemical used as a solvent, refrigerant, and in the production of pharmaceuticals; it is released as pollutant from various industrial chemical factories.0.13 ppb
0.4 ppb
No
100 ppb
No
100 ppb
Monochloroacetic acidMonochloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.2.43 ppb
8.5 ppb
No
70 ppb
No
60 ppb
Trichloroacetic acidTrichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.2.79 ppb
4.3 ppb
No
20 ppb
No
60 ppb
Dibromoacetic acidDibromoacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.1.06 ppb
1.8 ppb
NoNo
60 ppb
1,1-Dichloroethane1,1-Dichloroethane is used in industrial chemical synthesis, as a solvent for plastics, paint, varnish, and finish removers and as an insecticide/fumigant.0.07 ppb
0.55 ppb
No
3 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
DichlorofluoromethaneDichlorofluoromethane (Freon-21) is a refrigerant and ozone-depleting chemical scheduled to be phased out of use under the Montreal Protocol.0.06 ppb
0.8 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
1,1,1-Trichloroethane1,1,1-Trichloroethane is an industrial cleaning solvent that contaminates drinking water sources due to releases from metal degreasing sites and chemicals factories.0.03 ppb
0.3 ppb
No
200 ppb
No
200 ppb
1,1-DichloroethyleneIndustrial chemical pollutant from manufacture of adhesives, synthetic fibers, refrigerants and plastic wraps.0.04 ppb
0.28 ppb
No
7 ppb
No
7 ppb
Barium (total)Barium is a mineral that enters drinking water through drilling and mining waste runoff, discharges from chemical industries and erosion of natural deposits.134.25 ppb
145.75 ppb
No
700 ppb
No
2000 ppb
Bromochloroacetic acidBromochloroacetic acid is a disinfection byproduct, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.2.17 ppb
3 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
o-Xyleneo-Xylene is a petroleum-derived solvent used in the printing, rubber, and leather industries; it is also used as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.0.01 ppb
0.2 ppb
No
10000 ppb
No
10000 ppb
m- & p- XyleneXylene is a petroleum-derived solvent used in the printing, rubber, and leather industries, and as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.0.04 ppb
0.7 ppb
No
10000 ppb
No
10000 ppb
Xylenes (total)Xylenes are a group of chemicals produced from petroleum and released as pollutants from chemical, plastics and synthetic fiber industries as well as printing, painting, and laboratory uses.0.02 ppb
0.2 ppb
No
1800 ppb
No
10000 ppb
DCPA di acid degradateDCPA di acid degradate is a residue of Dacthal (DCPA), an herbicide used for urban, household and agricultural applications.0.73 ppb
1 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
DichlorodifluoromethaneDichlorodifluoromethane (Freon 12) is a chlorofluorocarbon refrigerant and aerosol spray propellant; it was banned under the Montreal Protocol as of 2000 because of its ozone-depleting properties.<0.01 ppb
0.18 ppb
No
1000 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
ChloromethaneChloromethane is a naturally occuring chemical that forms during combustion of plant material; it may be released from the manufacture of silicone, rubber and pesticides, and also forms as a byproduct of water disinfection.0.84 ppb
17.67 ppb
No
30 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
EthylbenzeneEthylbenzene is a pollutant from petroleum refineries and industrial chemical factories; it is also used to make plastics, and may be present as an impurity in some insecticides.<0.01 ppb
0.2 ppb
No
300 ppb
No
700 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Contaminants Not Detected - 125 chemicals

1,1,1,2-Tetrachloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloropropene, 1,2 Dibromo-3-chloropropane (DBCP), 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3,5-Trimethylbenzene, 1,3-Dichloropropane, 1,3-dinitrobenzene, 2,2',4,4',5,5'-hexabromobiphenyl (hbb), 2,2',4,4',5,5'-hexabromodiphenyl Ether, 2,2',4,4',5-pentabromodiphenyl Ether, 2,2',4,4',6-pentabromodiphenyl Ether, 2,2',4,4'-tetrabromodiphenyl Ether, 2,2-Dichloropropane, 2,4,5-t, 2,4,5-TP (Silvex), 2,4,6-trinitrotoluene (tnt), 2,4-d, 2,4-db, 2,4-Dinitrotoluene, 2,6-Dinitrotoluene, 3-Hydroxycarbofuran, 4,4-dde, 4-Nitrophenol, Acetochlor, Acetone, Acifluorfen (Blazer), Alachlor (Lasso), Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Aldrin, Allyl Chloride (3-chloro-1-propene), Alpha Chlordane, Antimony (total), Atrazine, Bentazon (Basagran), Benzo[a]pyrene, Beryllium (total), Bromobenzene, Bromochloromethane, Bromomethane, Butachlor, Cadmium (total), Carbaryl, Carbofuran, Carbon tetrachloride, Chloramben, Chlordane, Chloroethane, Chromium (total), cis-1,3-Dichloropropene, Combined Uranium (pCi/L), Cyanazine (Bladex), Dalapon, Di(2-Ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Dibromomethane, Dicamba, Dichloromethane (methylene chloride), Dichlorprop, Dieldrin, Dimethoate, Dinoseb, Endrin, Ethyl ether, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorobutadiene, Hexachlorocyclopentadiene, Isopropylbenzene, Lindane, m-Dichlorobenzene, Mcpa, Mcpp, Mercury (total inorganic), Methomyl, Methoxychlor, Methyl ethyl ketone, Methyl isobutyl ketone, Metolachlor, Metribuzin, Molinate (Ordram), Monobromoacetic acid, Monochlorobenzene (Chlorobenzene), Mtbe, n-Butylbenzene, n-Propylbenzene, Naphthalene, Nitrate, Nitrobenzene, o-Chlorotoluene, o-Dichlorobenzene, Oxamyl (Vydate), p-Chlorotoluene, p-Dichlorobenzene, p-Isopropyltoluene, Pentachlorophenol, Perchlorate, Picloram, Propachlor, Rdx (hexahydro-1,3,5-trinitro-1,3,5-triazine), sec-Butylbenzene, Selenium (total), Simazine, Styrene, Terbacil, Terbufos Sulfone, tert-Butylbenzene, Tetrahydrofuran, Thallium (total), Toluene, Toxaphene, trans-1,3-Dichloropropene, Trans-Nonachlor, Trichlorofluoromethane, Trichlorotrifluoroethane

Pollution Summary

30Total Contaminants Detected (2004 - 2010)

Barium (total), DCPA di acid degradate, Chloromethane, Dichlorodifluoromethane, cis-1,2-Dichloroethylene, Monochloroacetic acid, Trichloroacetic acid, Dibromoacetic acid, Bromochloroacetic acid, Xylenes (total), 1,1-Dichloroethylene, 1,1-Dichloroethane, trans-1,2-Dichloroethylene, 1,1,1-Trichloroethane, Ethylbenzene, o-Xylene, m- & p- Xylene, Dichlorofluoromethane, Arsenic (total), Dichloroacetic acid, Chloroform, Bromoform, Bromodichloromethane, Dibromochloromethane, Total trihalomethanes (TTHMs), Vinyl chloride, Trichloroethylene, Tetrachloroethylene, Benzene, Alpha particle activity

3Agricultural Pollutants
(pesticides, fertilizer, factory farms)

DCPA di acid degradate, Ethylbenzene, Arsenic (total)

7Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Arsenic (total), Tetrachloroethylene, Xylenes (total), m- & p- Xylene, o-Xylene, Benzene, DCPA di acid degradate

19Industrial Pollutants

Barium (total), Chloromethane, Dichlorodifluoromethane, cis-1,2-Dichloroethylene, Xylenes (total), 1,1-Dichloroethylene, 1,1-Dichloroethane, trans-1,2-Dichloroethylene, 1,1,1-Trichloroethane, Ethylbenzene, o-Xylene, m- & p- Xylene, Dichlorofluoromethane, Arsenic (total), Vinyl chloride, Trichloroethylene, Tetrachloroethylene, Benzene, Alpha particle activity

12Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Total trihalomethanes (TTHMs), Chloroform, Bromodichloromethane, Dibromochloromethane, Dichloroacetic acid, Trichloroacetic acid, Bromoform, Dibromoacetic acid, Monochloroacetic acid, Bromochloroacetic acid, Chloromethane, Vinyl chloride

4Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Barium (total), Arsenic (total), Alpha particle activity, Chloromethane

6Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

DCPA di acid degradate, Chloromethane, Dichlorodifluoromethane, Bromochloroacetic acid, 1,1-Dichloroethane, Dichlorofluoromethane

EPA Violation Summary

No violations were reported for this system since 2004.

Information on violations is drawn directly from EPA's national violations database in the Agency's Safe Drinking Water Information System. Analyses by others have raised questions about the quality of the information in EPA's database. For the purposes of this investigation, EWG is not showing below or including in our analyses, those violations for individual water suppliers that occurred on days for which the total number of violations assigned by EPA to that water supplier was greater than 20. This criteria was based on common characteristics of incorrect violations data as identified by water utilities, from a review of EPA's violations data by several hundred utilities prior to the release of EWG's investigation.