The Power of Information

National Drinking Water Database


Allegan County Services Center - Hopkins, MI


Serves 101 people - Test data available: 2007

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the Michigan Department of Environmental Quality. 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.
4 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.
1 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
12 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.
61 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*
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.5.1 ppb
5.1 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
Yes
5 ppb
Dichloromethane (methylene chloride)Dichloromethane is a widely-used paint remover, solvent and metal degreasing agent; it is discharged into the environment from the manufacture of chemicals, textiles, electronics, metals and plastics, pharmaceuticals and pesticides.2.2 ppb
2.2 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
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.1.2 ppb
1.2 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
1,2-Dichloropropane1,2-Dichloropropane is used as a solvent and intermediate in the production of dry cleaning agent perchloroethylene; it is released as a pollutant from chemical factories, landfills, and from agricultural soil due to former use as a fumigant.0.7 ppb
0.7 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*
NitrateNitrate enters drinking water sources from fertilizer runoff, leaching septic tanks, and erosion of natural deposits; it is also emitted by chemical, petrochemical and metal-finishing industries.2.1 ppm
2.1 ppm
No
10 ppm
No
10 ppm
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.6.3 ppb
6.3 ppb
No
30 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
BromomethaneBromomethane is a pesticide used for soil, grain, indoor air and other applications, and a solvent used to extract vegetable and seed oils.1.7 ppb
1.7 ppb
No
10 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
Methyl ethyl ketoneMethyl ethyl ketone is a synthetic chemical used as a solvent for paints, coatings, adhesives, printing inks, and other industrial and consumer goods; it occurs naturally in some vegetation and forms during ozonation of drinking water. 145 ppb
145 ppb
No
4000 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
DibromomethaneDibromomethane is an unregulated byproduct of tap water disinfection and a manufactured chemical used in chemical synthesis and as an ingredient in fire extinguishing fluids.0.9 ppb
0.9 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
2,2-Dichloropropane2,2-Dichloropropane is an intermediate used in chemical manufacturing.2.3 ppb
2.3 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
1,1-DichloroethyleneIndustrial chemical pollutant from manufacture of adhesives, synthetic fibers, refrigerants and plastic wraps.4.8 ppb
4.8 ppb
No
7 ppb
No
7 ppb
StyreneStyrene is a pollutant from plastics, rubber and other industrial chemical factories and from landfill leachate.0.5 ppb
0.5 ppb
No
100 ppb
No
100 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 - 49 chemicals

1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloropropene, 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dichloroethane, 1,3,5-Trimethylbenzene, 1,3-Dichloropropane, Benzene, Bromobenzene, Bromochloromethane, Bromodichloromethane, Bromoform, Chloroethane, Chloroform, cis-1,2-Dichloroethylene, cis-1,3-Dichloropropene, Dibromochloromethane, Dichlorodifluoromethane, Ethylbenzene, Hexachlorobutadiene, Isopropylbenzene, m-Dichlorobenzene, Methyl isobutyl ketone, Monochlorobenzene (Chlorobenzene), Mtbe, n-Butylbenzene, n-Propylbenzene, Naphthalene, Nitrite, Nitrobenzene, o-Dichlorobenzene, o-Xylene, p-Dichlorobenzene, p-Isopropyltoluene, sec-Butylbenzene, tert-Butylbenzene, Toluene, Total trihalomethanes (TTHMs), trans-1,2-Dichloroethylene, trans-1,3-Dichloropropene, Trichloroethylene, Trichlorofluoromethane, Xylenes (total)

Pollution Summary

12Total Contaminants Detected (2007 - 2007)

Nitrate, Chloromethane, Bromomethane, Methyl ethyl ketone, Dibromomethane, 2,2-Dichloropropane, Dichloromethane (methylene chloride), Vinyl chloride, 1,1-Dichloroethylene, 1,2-Dichloropropane, Tetrachloroethylene, Styrene

3Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Nitrate, Bromomethane, 1,2-Dichloropropane

4Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Nitrate, Methyl ethyl ketone, Dichloromethane (methylene chloride), Tetrachloroethylene

11Industrial Pollutants

Nitrate, Chloromethane, Methyl ethyl ketone, Dibromomethane, 2,2-Dichloropropane, Dichloromethane (methylene chloride), Vinyl chloride, 1,1-Dichloroethylene, 1,2-Dichloropropane, Tetrachloroethylene, Styrene

3Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Chloromethane, Dibromomethane, Vinyl chloride

2Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Nitrate, Chloromethane

5Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Chloromethane, Bromomethane, Methyl ethyl ketone, Dibromomethane, 2,2-Dichloropropane

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.