Annual Water Quality Report
For the period of January 1 to December 31, 2009
This
report is intended to provide you with important information about your
drinking water and the efforts made by the City of Ogallala water system to
provide safe drinking water.
The source of drinking water used by the City of Ogallala is groundwater.
For more information regarding this report, contact:
JOHN SAUER
308-284-3925
Para Clientes Que Hablan Español:
Este informe contiene información muy importante sobre el agua que usted bebe. Tradúzcalo ó hable con alguien que lo entienda bien.
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, 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 can pickup 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 storm water 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 storm water runoff, and residential uses.
Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, and septic systems.
Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.
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 that 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 (800-426-4791).
In order to ensure that water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health.
Some people may be 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 particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).
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. We 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 on 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.
The City of Ogallala is required to test for the following contaminants:
Coliform Bacteria, Antimony, Arsenic, Asbestos, Barium, Beryllium, Cadmium, Chromium, Copper, Cyanide, Fluoride, Lead, Mercury, Nickel, Nitrate, Nitrite, Selenium, Sodium, Thallium, Alachlor, Atrazine, Benzo(a)pyrene, Carbofuran, Chlordane, Dalapon, Di(2-ethylhexyl)adipate, Dibromochloropropane, Dinoseb, Di(2-ethylhexyl)phthalate, Diquat, 2,4-D, Endothall, Endrin, Ethylene dibromide, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene, Hexachlorocyclopentadiene, Lindane, Methoxychlor, Oxamyl (Vydate), Pentachlorophenol, Picloram, Polychlorinated biphenyls, Simazine, Toxaphene, Dioxin, Silvex, Benzene, Carbon Tetrachloride, o-Dichlorobenzene, Para-Dichlorobenzene, 1,2-Dichlorethane, 1,1-Dichloroethylene, Cis-1,2,-Dichloroethylene, Trans-1,2-Dichloroethylene, Dichloromethane, 1,2-Dichloropropane, Ethylbenzene, Monochlorobenzene, 1,2,4-Trichlorobenzene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Trichloroethylene, Vinyl Chloride, Styrene, Tetrachloroethylene, Toluene, Xylenes (total), Gross Alpha (minus Uranium & Radium 226), Radium 226 plus Radium 228, Sulfate, Chloroform, Bromodichloromethane, Chlorodibromomethane, Bromoform, Chlorobenzene, m-Dichlorobenzene, 1,1-Dichloropropene, 1,1-Dichloroethane, 1,1,2,2-Tetrachlorethane, 1,2-Dichloropropane, Chloromethane, Bromomethane, 1,2,3-Trichloropropane, 1,1,1,2-Tetrachloroethane, Chloroethane, 2,2-Dichloropropane, o-Chlorotoluene, p-Chlorotoluene, Bromobenzene, 1,3-Dichloropropene, Aldrin, Butachlor, Carbarryl, Dicamba, Dieldrin, 3-Hydroxycarbofuran, Methonyl, Metolachlor, Metribuzin, Propachlor.
wastewater discharges, oil and gas production, mining, or farm
City of Ogallala TEST RESULTS (COLLECTED IN 2009 UNLESS NOTED) Date Printed: 3/5/2010 NE 3110102
Coliform Bacteria
|
Maximum Contaminant Level Goal |
Total Coliform Maximum Contaminant Level |
Highest No. Of Positive Total Coliform Samples in any month |
Fecal Coliform or E.Coli Maximum Contaminant Level |
Total No. of Positive E.Coli or Fecal Coliform Samples |
Violation? |
Likely Source of Contamination |
|
0 |
1 positive monthly sample |
8 |
|
0 |
Yes |
Naturally present in the environment |
Lead and Copper
Definitions:
Action Level Goal (ALG): The level of a contaminant in drinking water below which there is no known or expected risk to health. ALGs allow for a margin of safety.
Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
|
Lead and Copper |
Date Sampled |
MCLG |
Action Level (AL) |
90th Percentile |
# Sites Over AL |
Units |
Violation |
Likely Source of Contamination |
|
Copper |
06/18/2007 |
1.3 |
1.3 |
0.1804 |
|
ppm |
N |
Erosion of natural deposits; Leaching from wood preservatives; Corrosion of household plumbing systems. |
|
Lead |
6/18/2007 |
0 |
15 |
0.2 |
|
ppb |
N |
Corrosion of household plumbing systems; Erosion of natural deposits. |
Water Quality Test Results
Maximum Contaminant Level Goal or 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 or 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 disinfectant level goal or MRDLG: The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
Maximum residual disinfectant level or MRDL: The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Definitions: The following tables contain scientific terms and measures, some of which may require explanation.
ppb: micrograms per liter or parts per billion – or one ounce in 7,350,000 gallons of water.
Na: not applicable
Avg: Regulatory compliance with some MCLs are based on running annual average of monthly samples.
ppm: milligrams per liter or parts per million – or one ounce in 7,350 gallons of water.
pCi/l: PicoCuries per liter (measurement of radioactivity)
Regulated Contaminants |
Collection Date |
Highest Level Detected |
Range of Levels Detected |
MCLG |
MCL |
Unit of Measurement |
Violation? |
Likely Source Of Contaminant |
|
|
Inorganic Contaminants |
|||||||||
*Arsenic |
1/22/2007 |
6.88 |
0 – 6.88 |
0 |
10 |
ppb |
No |
Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes |
|
|
Barium |
0.107 |
0.0885 – 0.107 |
2 |
2 |
ppm |
No |
Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits |
||
|
Chromium |
3.54 |
3.49 – 3.54 |
100 |
100 |
ppb |
No |
Discharge from steel and pulp mills; Erosion of natural deposits |
||
|
Fluoride |
1.11 |
0.589 – 1.11 |
4 |
4.0 |
ppm |
No |
Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories |
||
|
Nitrite (measured as nitrogen) |
2.83 |
2.44 – 2.83 |
10 |
10 |
ppm |
No |
Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits |
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Radioactive Contaminants |
|||||||||
|
Gross alpha excluding radon and uranium |
|
10.5 |
9 – 10.5 |
0 |
15 |
pCi/L |
No |
Erosion of natural deposits |
|
|
Uranium |
10/26/2004 |
29.353 |
29.353 – 29.353 |
0 |
30 |
ug/l |
No |
Erosion of natural deposits |
|
*While your drinking water meets EPA’s standard for arsenic, it does contain low levels of arsenic. EPA’s standard balances the current understanding of arsenic’s possible health effects against the costs of removing arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems.
Violations Table
|
Total Coliform |
|||
|
Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially-harmful, bacteria may be present. |
|||
|
Violation Type |
Violation Begin |
Violation End |
Violation Explanation |
|
MCL (TCR), MONTHLY |
08/01/2009 |
08/31/2009 |
Total coliform bacteria were found in our drinking water during the period indicated in enough samples to violate a standard. System was chlorinated to bring back into compliance. |
|
MCL (TCR), MONTHLY |
12/01/2009 |
12/31/2009 |
Total coliform bacteria were found in our drinking water during the period indicated in enough samples to violate a standard. System was chlorinated to bring back into compliance. |
This report will not be mailed, copies are available at the City Clerks Office, 411 East 2nd Street.