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Posted on: April 29, 2021

2021 Consumer Confidence Report

ORCHARD CITY TOWN OF 2021 Drinking Water Quality Report
 Covering Data For Calendar Year 2020
 Description: blPublic Water System ID: CO0115588
 Esta es información importante.  Si no la pueden leer, necesitan que alguien se la traduzca.

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 MELISSA OELKE at 970-835-3337; 970-835-3330 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 epa.gov/ground-water-and-drinking-water.


 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 epa.gov/safewater/lead.

Source Water Assessment and Protection (SWAP)
The Colorado Department of Public Health and Environment may have 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 wqcdcompliance.com/ccr.  The report is located under “Guidance: Source Water Assessment Reports”.  Search the table using 115588, ORCHARD CITY TOWN OF, or by contacting 
MELISSA OELKE at 970-835-3337; 970-835-3330.  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

Sources (Water Type - Source Type)

Potential Source(s) of Contamination

LITTLE GEM RESERVOIR (Surface Water-Intake)
BIG DITCH INTAKE (Surface Water-Intake)
SPRING NO 8 (Groundwater UDI Surface Water-Well)
SPRING NO 9 (Groundwater UDI Surface Water-Well)
SPRING NO 10 (Groundwater UDI Surface Water-Well)
SPRING NO 11 (Groundwater UDI Surface Water-Well)
SPRING NO 12 (Groundwater UDI Surface Water-Well)
SPRING NO 13 (Groundwater UDI Surface Water-Well)
SPRING NO 14 (Groundwater UDI Surface Water-Well)
SPRING NO 15 (Groundwater UDI Surface Water-Well)
SPRING NO 1 (Groundwater UDI Surface Water-Well)
SPRING NO 2 (Groundwater UDI Surface Water-Well)
SPRING NO 3 (Groundwater UDI Surface Water-Well)
SPRING NO 4 (Groundwater UDI Surface Water-Well)
SPRING NO 5 (Groundwater UDI Surface Water-Well)
SPRING NO 6 (Groundwater UDI Surface Water-Well)
SPRING NO 7 (Groundwater UDI Surface Water-Well)
 

Row Crops, Deciduous Forest, Evergreen Forest, Mixed Forest, Septic Systems, Oil / Gas Wells, Road Miles


 
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.

Description: blDetected Contaminants

ORCHARD CITY 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, 2020 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, 2020

Lowest period percentage of samples meeting TT requirement: 100%

0

3

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

07/20/2020 to 07/21/2020

0.14

10

ppm

1.3

0

No

Corrosion of household plumbing systems; Erosion of natural deposits

Lead

07/20/2020 to 07/21/2020

1

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

MCL Violation

Typical Sources

Total Haloacetic Acids (HAA5)

2020

9.7

9.7 to 9.7

1

ppb

60

N/A

No

Byproduct of drinking water disinfection

Total Trihalomethanes (TTHM)

2020

11

11 to 11

1

ppb

80

N/A

No

Byproduct of drinking water disinfection

 

 

Total Organic Carbon (Disinfection Byproducts Precursor) Removal Ratio of Raw and Finished Water

Contaminant Name

Year

Average

Range
 Low – High

Sample Size

Unit of Measure

TT Minimum Ratio

TT Violation

Typical Sources

Total Organic Carbon Ratio

2020

1

1 to 1

4

Ratio

1.00

No

Naturally present in the environment

*If minimum ratio not met and no violation identified then the system achieved compliance using alternative criteria.

 

 

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:
Apr
 

Highest single measurement:
 0.258 NTU

Maximum 1  NTU for any single measurement

No

Soil Runoff

Turbidity

Month:
 Dec

Lowest monthly percentage of samples meeting TT requirement for our technology: 100  %

In any month, at least 95% of samples must be less than 0.3  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

2018

0.06

0.06 to 0.06

1

pCi/L

15

0

No

Erosion of natural deposits

Combined Radium

2018

0.2

0.2 to 0.2

1

pCi/L

5

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

Nitrate

2020

0.27

0.27 to 0.27

1

ppm

10

10

No

Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits

 

 

 

 

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

2019

2

2 to 2

1

ppm

N/A

 

 

Description: bl
 
Violations, Significant Deficiencies, and Formal Enforcement Actions

 

Non-Health-Based Violations
 
These violations do not usually mean that there was a problem with the water quality. If there had been, we would have notified you immediately. We missed collecting a sample (water quality is unknown), we reported the sample result after the due date, or we did not complete a report/notice by the required date.

Name

Description

Time Period

TOTAL COLIFORM

FAILURE TO MONITOR AND/OR REPORT

07/01/2020 - 07/31/2020

CHLORINE/CHLORAMINE

FAILURE TO MONITOR AND/OR REPORT

07/01/2020 - 07/31/2020

CHLORINE

FAILURE TO MONITOR AND/OR REPORT

07/01/2020 - 09/30/2020

Additional Violation Information

Failed to report total coliform for July 2020. August reporting period corrected violation and no further action was required by CDPHE.

Inadequate survey compliance ratio and failure to complete an annual backflow report both in 2018. In 2019 and 2020 all reports were in 100% compliance

 

 

 

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