The Power of Information

National Drinking Water Database


Canton Point Park - Auburn, ME


Serves 73 people - Test data available: 2004-2007

This drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group (EWG) by the Maine Department of Health and Human Services- Division of Environmental Health. 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.
7 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.
3 chemicals
0.5
Pollutants FoundThe total number of contaminants detected since 2004, according to data provided by the state water agency.
11 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.
155 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*
Uranium-238Uranium-238 is a radioactive element commonly found in most rocks; processed ore is used for power generation and weapons manufacture.0.02 pCi/L
0.03 pCi/L
YesYes
0.03 pCi/L
Alpha particle activity (excl radon and uranium)Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources.18.2 pCi/L
18.2 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
Yes
15 pCi/L
Alpha particle activityAlpha particles are a form of radiation released from mining waste pollutants and natural sources.17.5 pCi/L
17.5 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
Yes
15 pCi/L
RadonRadon is a radioactive breakdown product of radium and uranium in soil, rock and water; it is often present in groundwater.3880.67 pCi/L
5240 pCi/L
Yes
1.5 pCi/L
Legal at any levelThis is the Federal Limit. State Limits may be lower.
Radium-228Radium-228 is a radioactive element usually found around uranium deposits.0.86 pCi/L
1.42 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
5 pCi/L
Combined Radium (-226 & -228)Radium is a radioactive element usually found around uranium deposits.2.42 pCi/L
2.42 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
5 pCi/L
Radium-226Radium-226 is a radioactive element usually found around uranium deposits.1 pCi/L
1 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
5 pCi/L
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*
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.73 ppb
73 ppb
No
700 ppb
No
2000 ppb
Chromium (total)Chromium is a metal that pollutes drinking water due to discharge from steel and pulp mills and erosion of natural deposits.1.1 ppb
1.1 ppb
No
100 ppb
No
100 ppb
CopperCopper is a naturally occuring metal and drinking water contaminant that enters tap water by corrosion of household plumbing systems and erosion of natural deposits.1.6 ppb
1.6 ppb
No
300 ppb
No
1000 ppb
ManganeseManganese is a naturally occurring element released from mineral deposits as well as industrial use.44 ppb
44 ppb
No
50 ppb
No
50 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 - 68 chemicals

1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloroethylene, 1,1-Dichloropropene, 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-Dichloropropene, 2,2-Dichloropropane, 2-Hexanone, Antimony (total), Arsenic (total), Benzene, Beryllium (total), Bromobenzene, Bromochloromethane, Bromodichloromethane, Bromoform, Bromomethane, Cadmium (total), Carbon tetrachloride, Chloroethane, Chloroform, Chloromethane, cis-1,2-Dichloroethylene, Cyanide, Dibromomethane, Dichlorodifluoromethane, Dichloromethane (methylene chloride), Ethylbenzene, Hexachlorobutadiene, Isopropylbenzene, Lead (total), m- & p- Xylene, Mercury (total inorganic), Monochlorobenzene (Chlorobenzene), Mtbe, n-Butylbenzene, n-Propylbenzene, Naphthalene, Nitrate, Nitrate & nitrite, Nitrite, Nitrobenzene, o-Dichlorobenzene, o-Xylene, p-Dichlorobenzene, sec-Butylbenzene, Selenium (total), Silver (total), Styrene, tert-Butylbenzene, Tetrachloroethylene, Thallium (total), Toluene, Total trihalomethanes (TTHMs), trans-1,2-Dichloroethylene, Trichloroethylene, Trichlorofluoromethane, Vinyl chloride

Pollution Summary

11Total Contaminants Detected (2004 - 2007)

Barium (total), Chromium (total), Copper, Manganese, Alpha particle activity (excl radon and uranium), Radon, Uranium-238, Combined Radium (-226 & -228), Radium-226, Radium-228, Alpha particle activity

0Agricultural Pollutants
(pesticides, fertilizer, factory farms)

1Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Copper

9Industrial Pollutants

Barium (total), Chromium (total), Manganese, Alpha particle activity (excl radon and uranium), Uranium-238, Combined Radium (-226 & -228), Radium-226, Radium-228, Alpha particle activity

0Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

11Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Barium (total), Chromium (total), Copper, Manganese, Alpha particle activity (excl radon and uranium), Radon, Uranium-238, Combined Radium (-226 & -228), Radium-226, Radium-228, Alpha particle activity

1Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Radon

EPA Violation Summary

Violation CategoryNumber of Violations
Reporting
(click see violations)
1
Monitoring
(click see violations)
1

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.