Annual Water Quality Report

2011 Village of Ontonagon

Annual Water Quality Report

 

Is my water safe?

Last year your tap water met all U.S. Environmental Protection Agency [EPA] and State ofMichigandrinking water health standards. This report is a snap shot of last year’s water quality. Included are details about where your water comes from, what it contains, and how it compares to EPA and State ofMichiganstandards. We are committed to providing you with information because informed customers are our best allies.

 

Where does my water come from?

The Ontonagon Regional Water System gets its water from Lake Superior through an intake tunnel just out from the mouth of theBigIronRiver. From here the water is pumped to the water treatment plant locacated at the White Pine mine site. This surface water is being treated with a chemical called alum to help remove particles that make the water cloudy or turbid. Soda ash aids this removal. It also controls corrosion in the water that could cause lead or copper to leach out of pipes. The water flows through slow mixing chambers, and then goes to sedimentation basins which allow particles to settle out of the water. Next the sand filters remove more particles. Finally, Chlorine is added to kill harmful bacteria. The water flows to a clearwell storage tank and is ready to enter the distribution system.

 

A source water assessment was completed by the Department of Environmental Quality in 2003. The purpose of this assessment is to determine the susceptibility of our source water to potential contamination. The Ontonagon Regional Water Supply source water has been determined to have moderately high susceptibility, based primarily on geologic sensitivity, water chemistry, and contaminant source. If you would like to know more about the report please contact John Dupie at the water plant (906) 885-5631.

 

Why are there contaminants in my drinking water?

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the EPA’s Safe Drinking Water Hotline (1-800-426-4791).

 

Some people maybe more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularity at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lesson the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791).

 

The sources of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoir, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and pick up substances resulting from the presence of animals or from human activity.

 

Contaminants that may be present in source water include:

  • Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
  • Inorganic contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
  • Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff and residential uses.
  • Organic chemical contaminants, including synthetic and volatile organic chemicals, which are byproducts of industrial processes and petroleum production, and can also, come from gas stations, urban stormwater runoff and septic systems.
  • Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.

In order to ensure that tap water is safe to drink, the EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. Food and Drug Administration regulations establish limits for contaminants in bottled water which must provide the same protection for public health.

 

 

 

The following informational statement about lead in drinking water is required for all community water systems to include in their Consumer Confidence Reports. It does not reflect any changes to your water quality.

 

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. Ontonagon Water Service is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information about lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.

 

 

 

If you have any questions about the quality of your water or the data in this report, please call John Dupie at the water filtration plant at (906) 885-5631. This report will not be mailed to individual customers. If you would like a personal copy, please contact the water plant or village office.

 

The Ontonagon Village Council meets at 6:00pm on the second Monday of each Month. Meetings are held at the village office at 315   Quartz Street. Please feel free to come and participate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Water Quality Data Table

 

The table below lists all the drinking water contaminants that we detected during the 2010 calendar year. The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk. Unless otherwise noted, the data presented in this table is from testing done in 2010. The state allows us to monitor for certain contaminants less than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. All of the data is representative of the quality, but some are more than one year old.

 

Terms and abbreviations used below:

–          Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

–          Maximum Contaminant Level (MCL):  The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

–          Maximum Residual Disinfection Level (MRDL):  means the highest level of disinfectant allowed in the drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

–          Maximum Residual Disinfection Level Goal (MRDLG): means the level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs don’t reflect the benefit of disinfection of controlling microbial contaminants.

–          N/A: Not applicable         ND: Not detectable at testing limit       ppb: Parts per billion or micrograms per liter ppm: Parts per million or milligrams per liter   pCi/L: Picocuries per liter (a measure of Radioactivity) TT: Treatment Technique.

–          Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that water system must follow.

 

Regulated

Contaminant

MCL

MCLG

Level

Detected

Sample

Date

Violation

Yes/No

Typical Source of   Contaminant
Chlorine (ppm) MRDL=4 MRDLG=4

1.56 avg

    2011

No

Water additive used to   control Microbes
Barium

(ppm)

2000

2000

20

2003

No

Discharge of drilling   wastes; Discharge of Metal refineries; Erosion of natural deposits
Haloacetic Acids (ppb)

60

N/A

30-39

34 avg.

2011

No

Byproducts of drinking water   disinfection

Total Trihalomethenes (ppb)

80

N/A

48-54

52 avg.

2011

No

Byproducts of drinking water   disinfection

Total

Organic Carbon (ppm)

N/A

N/A

.89ppm

2011

No

No health effects. However,   it serves as a medium for the formation of disinfection byproducts. Naturally   occurs in the environment.

Flouride

4

4

N/D

2011

No

Erosion of natural deposits

Nitrate as N

10

10

N/D

2011

No

Agricultural run off

Nitrite as N

1

1

N/D

2011

No

Agricultural run off

 

 Radioactive

Contaminants

           
Combined Radium (pCi/L)

5

0

0.1

2003

No

Erosion of natural deposits

 

Microbiological

Contaminants

         
Turbidity

TT=5NTU

TT=% of samples <=0.3NTU

.03NTU Max

100%

2011

No Soil run off

 

Special Monitoring and

Unregulated Contaminant*

Level detected

Sample Date

Typical Source Of Contaminants

Sodium(ppm)                      9

2011

Erosion of natural deposits
Chloride(ppm)

8

2011

Erosion of natural deposits
Sulfate(ppm)

ND

2011

Erosion of natural deposits

Contaminant subject to AL

Action Level

90% of samples<=this level

Sample Date

Number of samples above AL

Typical source of Contaminant

Lead (ppb)

15

1.1

2009

0

Corrosion of household   plumbing systems; erosion of natural deposits
Copper (ppb)         1300              28          2009                 0 Corrosion of household   plumbing systems: erosion of natural deposits

*Unregulated contaminants are those for which the EPA has not established drinking water standards, monitoring help determine whether regulations are needed.