2018 Drinking Water Consumer Confidence Report for 2017

Town of Hotchkiss

2018 Drinking Water Quality Report for 2017

Public Water System ID: Co0115352

3-12-2018

 

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We are pleased to present to you this year’s water quality report.  Our constant goal is to provide you with a safe and dependable supply of drinking water.  Please contact MICHAEL J OWENS at 970-872-3663 with any questions or for public participation opportunities that may affect water quality.

General Information
All 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 the water poses a health risk.  More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline (1-800-426-4791) or by visiting http://water.epa.gov/drink/contaminants.


Some people may be more vulnerable to contaminants in drinking water than the general population.  Immunocompromised 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 of infections.  These people should seek advice about drinking water from their health care providers.  For more information about contaminants and potential health effects, or to receive a copy of the U.S. Environmental Protection Agency (EPA) and the U.S. Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and microbiological contaminants call the EPA Safe Drinking Water Hotline at (1-800-426-4791).


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 pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water include:


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

In order to ensure that tap water is safe to drink, the Colorado Department of Public Health and Environment prescribes regulations limiting the amount of certain contaminants in water provided by public water systems.  The Food and Drug Administration regulations establish limits for contaminants in bottled water that must provide the same protection for public health.

Lead in Drinking Water
If present, elevated levels of lead can cause serious health problems (especially for pregnant women and young children). It is possible that lead levels at your home may be higher than other homes in the community as a result of materials used in your home’s plumbing. If you are concerned about lead in your water, you may wish to have your water tested. 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. Additional information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline (1-800-426-4791) or at http://www.epa.gov/safewater/lead.

Source Water Assessment and Protection (SWAP)
The Colorado Department of Public Health and Environment has provided us with a Source Water Assessment Report for our water supply. For general information or to obtain a copy of the report please visit
www.colorado.gov/cdphe/ccr.  The report is located under “Guidance: Source Water Assessment Reports”.  Search the table using 115352, HOTCHKISS TOWN OF, or by contacting MICHAEL J OWENS at 970-872-3663.  The Source Water Assessment Report provides a screening-level evaluation of potential contamination that could occur. It does not mean that the contamination has or will occur. We can use this information to evaluate the need to improve our current water treatment capabilities and prepare for future contamination threats. This can help us ensure that quality finished water is delivered to your homes. In addition, the source water assessment results provide a starting point for developing a source water protection plan.  Potential sources of contamination in our source water area are listed on the next page.

Please contact us to learn more about what you can do to help protect your drinking water sources, any questions about the Drinking Water Quality Report, to learn more about our system, or to attend scheduled public meetings. We want you, our valued customers, to be informed about the services we provide and the quality water we deliver to you every day.

Our Water Sources

Source Source Type Water Type Potential Source(s) of Contamination
HIGHLINE CANAL Intake Surface Water See Page 8 for Potential Sources.
LEROUX CREEK Intake Surface Water See Page 8 for Potential Sources.


Terms and Abbreviations

  • Maximum Contaminant Level (MCL) − The highest level of a contaminant allowed in drinking water.
  • Treatment Technique (TT) − A required process intended to reduce the level of a contaminant in drinking water.
  • Health-Based − A violation of either a MCL or TT.
  • Non-Health-Based − A violation that is not a MCL or TT.
  • Action Level (AL) − The concentration of a contaminant which, if exceeded, triggers treatment and other regulatory requirements.
  • Maximum Residual Disinfectant Level (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.
  • 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 Residual Disinfectant Level Goal (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.
  • Violation (No Abbreviation) − Failure to meet a Colorado Primary Drinking Water Regulation.
  • Formal Enforcement Action (No Abbreviation) − Escalated action taken by the State (due to the risk to public health, or number or severity of violations) to bring a non-compliant water system back into compliance.
  • Variance and Exemptions (V/E) − Department permission not to meet a MCL or treatment technique under certain conditions.
  • Gross Alpha (No Abbreviation) − Gross alpha particle activity compliance value. It includes radium-226, but excludes radon 222, and uranium.
  • Picocuries per liter (pCi/L) − Measure of the radioactivity in water.
  • Nephelometric Turbidity Unit (NTU) − Measure of the clarity or cloudiness of water. Turbidity in excess of 5 NTU is just noticeable to the typical person.
  • Compliance Value (No Abbreviation) – Single or calculated value used to determine if regulatory contaminant level (e.g.  MCL) is met. Examples of calculated values are the 90th Percentile, Running Annual Average (RAA) and Locational Running Annual Average (LRAA).
  • Average (x-bar) − Typical value.
  • Range (R) − Lowest value to the highest value.
  • Sample Size (n) − Number or count of values (i.e. number of water samples collected).
  • Parts per million = Milligrams per liter (ppm = mg/L) − One part per million corresponds to one minute in two years or a single penny in $10,000.
  • Parts per billion = Micrograms per liter (ppb = ug/L) − One part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000.
  • Not Applicable (N/A) – Does not apply or not available.
  • Level 1 Assessment – A study of the water system to identify potential problems and determine (if possible) why total coliform bacteria have been found in our water system.
  • Level 2 Assessment – A very detailed study of the water system to identify potential problems and determine (if possible) why an E. coli MCL violation has occurred and/or why total coliform bacteria have been found in our water system on multiple occasions.

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Detected Contaminants

HOTCHKISS TOWN OF routinely monitors for contaminants in your drinking water according to Federal and State laws. The following table(s) show all detections found in the period of January 1 to December 31, 2017 unless otherwise noted. The State of Colorado requires 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, or the system is not considered vulnerable to this type of contamination. Therefore, some of our data, though representative, may be more than one year old. Violations and Formal Enforcement Actions, if any, are reported in the next section of this report.

Note:
Only detected contaminants sampled within the last 5 years appear in this report. If no tables appear in this section then no contaminants were detected in the last round of monitoring.

Disinfectants Sampled in the Distribution System
TT Requirement: At least 95% of samples per period (month or quarter) must be at least 0.2 ppm OR
If sample size is less than 40 no more than 1 sample is below 0.2 ppm
Typical Sources: Water additive used to control microbes
Disinfectant Name Time Period Results Number of Samples Below Level Sample Size TT Violation MRDL
Chlorine December, 2017 Lowest period percentage of samples meeting TT requirement: 100% 0 4 No 4.0 ppm
Lead and Copper Sampled in the Distribution System
Contaminant Name Time Period 90th Percentile Sample Size Unit of Measure 90th Percentile AL Sample Sites Above AL 90th Percentile AL Exceedance Typical Sources
Copper 08/08/2017 to 08/08/2017 0.15 10 ppm 1.3 0 No Corrosion of household plumbing systems; Erosion of natural deposits
Lead 08/08/2017 to 08/08/2017 1.7 10 ppb 15 0 No Corrosion of household plumbing systems; Erosion of natural deposits
Disinfection Byproducts Sampled in the Distribution System
Name Year Average Range
Low – High
Sample Size Unit of Measure MCL MCLG Highest Compliance Value MCL Violation Typical Sources
Total Haloacetic Acids (HAA5) 2017 37.73 23.9 to 45 4 ppb 60 N/A No Byproduct of drinking water disinfection
Total Trihalomethanes (TTHM) 2017 46.6 26.8 to 63.8 4 ppb 80 N/A No Byproduct of drinking water disinfection
Disinfectants Sampled at the Entry Point to the Distribution System
Contaminant Name Year Number of Samples Above or Below Level Sample Size TT/MRDL Requirement TT/MRDL Violation Typical Sources
Chlorine/Chloramine 2017 0 2190 TT = No more than 4 hours with a sample below 0.2 MG/L No Water additive used to control microbes
Summary of Turbidity Sampled at the Entry Point to the Distribution System
Contaminant Name Sample Date Level Found TT Requirement TT Violation Typical Sources
Turbidity Date/Month:
Dec
Highest single measurement:
0.5 NTU
Maximum 0.5  NTU for any single measurement No Soil Runoff
Turbidity Month:
Jun
Lowest monthly percentage of samples meeting TT requirement for our technology: 98  % In any month, at least 95% of samples must be less than 0.1  NTU No Soil Runoff
Radionuclides Sampled at the Entry Point to the Distribution System
Contaminant Name Year Average Range
Low – High
Sample Size Unit of Measure MCL MCLG MCL Violation Typical Sources
Gross Alpha 2014 1.26 1.26 to 1.26 1 pCi/L 15 0 No Erosion of natural deposits
Combined Radium 2014 0.37 0.37 to 0.37 1 pCi/L 5 0 No Erosion of natural deposits
Combined Uranium 2014 0.06 0.06 to 0.06 1 ppb 30 0 No Erosion of natural deposits
Inorganic Contaminants Sampled at the Entry Point to the Distribution System
Contaminant Name Year Average Range
Low – High
Sample Size Unit of Measure MCL MCLG MCL Violation Typical Sources
Barium 2017 0.03 0.03 to 0.03 1 ppm 2 2 No Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Fluoride 2017 0.9 0.9 to 0.9 1 ppm 4 4 No Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories
Synthetic Organic Contaminants Sampled at the Entry Point to the Distribution System
Contaminant Name Year Average Range
Low – High
Sample Size Unit of Measure MCL MCLG MCL Violation Typical Sources
Dalapon 2017 1.1 1.1 to 1.1 1 ppb 200 200 No Runoff from herbicide used on rights of way
Volatile Organic Contaminants Sampled at the Entry Point to the Distribution System
Contaminant Name Year Average Range
Low – High
Sample Size Unit of Measure MCL MCLG MCL Violation Typical Sources
Xylenes 2017 1.3 1.3 to 1.3 1 ppb 10,000 10,000 No Discharge from petroleum factories; discharge from chemical factories
Cryptosporidium and Raw Source Water E. coli
Contaminant Name Year Number of Positives Sample Size
E. Coli 2017 5 7
Secondary Contaminants**
**Secondary standards are non-enforceable guidelines for contaminants that may cause cosmetic effects (such as skin, or tooth discoloration) or aesthetic effects (such as taste, odor, or color) in drinking water.
Contaminant Name Year Average Range
Low – High
Sample Size Unit of Measure Secondary Standard
Sodium 2017 5 5 to 5 1 ppm N/A

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Violations, Significant Deficiencies, Backflow/Cross-Connection, and Formal Enforcement Actions

Violations
Name Category Time Period Health Effects Compliance Value TT Level or MCL
TOTAL TRIHALOMETHANES (TTHM) FAILURE TO MONITOR AND/OR REPORT – NON-HEALTH-BASED 07/01/2017 – 09/30/2017 N/A N/A N/A
TOTAL HALOACETIC ACIDS (HAA5) FAILURE TO MONITOR AND/OR REPORT – NON-HEALTH-BASED 07/01/2017 – 09/30/2017 N/A N/A N/A
E. COLI FAILURE TO MONITOR AND/OR REPORT – NON-HEALTH-BASED 10/01/2017 – 10/31/2017 N/A N/A N/A
CROSS CONNECTION RULE FAILURE TO MEET CROSS CONNECTION/BACKFLOW REQUIREMENTS – HEALTH-BASED 05/31/2017 – 06/30/2017 May pose a risk to public health. N/A N/A

Total Trihalomethanes (TTHM) and Total Haloacetic Acids (HAA5) are combined sampling done quarterly. Sampling was done on both during the time frame. Both were found under the MCL. The Town of Hotchkiss was late getting results to CDPHE. As a consequence the Town of Hotchkiss received a reporting violation. Water quality was not an issue.

E.Coli is tested every two weeks on the Towns raw water intake. E.Coli is not uncommon in untreated surface water. The Town of Hotchkiss sampled as scheduled. The Town of Hotchkiss was late getting results to CDPHE. As a consequence the Town of Hotchkiss received a reporting violation. Water quality was not an issue.

The Cross Connection Rule required the Town of Hotchkiss to survey a minimum of 70% of the non-single family residents in 2017. The Town of Hotchkiss achieved 63% of non-single family residents surveyed by Dec. 31 2017.

The Town of Hotchkiss is also required to achieve a backflow device testing ratio of 60%. We reached only 51%.

The Town of Hotchkiss needs your help complying with the CDPHE Cross Connection Rule. The Town of Hotchkiss will continue to survey non-single family residence for compliance. Most backflow devices are privately owned and maintained. Backflow devices need tested yearly for compliance. If you have a testable backflow device and have not tested it. Please do so as soon as possible. A copy of the results must be sent to the Town of Hotchkiss.

The Town of Hotchkiss Water Source are: Leroux Creek and Highline Canal.

Potential Contaminant Sources (in no particular order):

  • Septic Systems
  • Fuel Storage Tanks
  • Miscellaneous Residential Practices
  • Wildfires
  • Road Maintenance
  • Spills/Accidents on Roads
  • Timber Harvesting
  • Cattle/Wildlife Grazing
  • Recreational Activities
  • Reservoir Construction & Maintenance
  • Abandoned Wells
  • Oil & Gas Development
  • Coal Mining Development