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North Weld County
Water District


32825 CR 39
PO Box 56 Lucerne, CO 80646

Phone: 970.356.3020
Fax: 970.395.0997
E-mail: water@nwcwd.org Office Hours: Monday-Friday 7:00 A.M.-5:00 P.M.
 

2017 Drinking Water Quality Report - for Calendar Year 2016



Public Water System ID: CO0162553

Esta es informacion 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 RICK PICKARD at 970-356-3020 with any questions about the Drinking Water Consumer Confidence Rule (CCR) or for public participation opportunities that may affect the water quality.

Click here for the Annual Water Quality Report

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 stormwater 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 stormwater 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 http://wqcdcompliance.com/ccr. The report is located under "Source Water Assessment Reports", and then "Assessment Report by County". Select WELD County and find 162553; NORTH WELD COUNTY WATER DISTRICT or by contacting RICK PICKARD at 970-356-3020. 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 Consumer Confidence 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

PURCHASED FROM FORT COLLINS CO0135291

CC (CONSECUTIVE CONNECTION)

SW (SURFACE WATER)

Our source water comes from Horsetooth Reservoir and the Poudre River.  Potential sources of contamination in our source water area may come from: Hazardous waste generators, chemical inventory/storage sites, toxic release inventory sites, permitted wastewater discharge sites, aboveground, underground and leaking storage tank sites, solid waste sites, existing/abandoned mine sites, other facilities, commercial/industrial & transportation, low intensity residential, urban recreational grasses, row crops, fallow, pasture/hay, deciduous forest, evergreen forest, mixed forest, septic systems, oil/gas wells, road miles.

PURCHASED FROM GREELEY CO0162321

CC

SW

PURCHASED FROM  TRI DISTRICT CO0135718

CC

SW



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.
  • 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.


Detected Contaminants
NORTH WELD COUNTY WATER DISTRICT 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, 2016 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.

Microorganism Contaminants Sampled in the Distribution System

Contaminant Name

Time Period

Results

Sample Size

MCL

MCLG

MCL Violation

Typical Sources

Coliform (TCR)

January-December

0 Positive Samples

120

No more than 1 positive sample per period (if sample size is less than 40)

0

No

Naturally present in the environment



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)

2016

29.77

23.4 to 39.4

12

ppb

60

N/A

No

Byproduct of drinking water disinfection

Total Trihalomethanes (TTHM)

2016

41.06

30 to 64.2

12

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

TRI DISTRICT

2016

1.18

0.94 to 1.39

12

Ratio

1.00

No

Naturally present in the environment

FORT COLLINS

2016

1.28

1.00 to 1.60

12

Ratio

1.00

No

GREELEY

2016

1.28

0.59 to 1.61

19

Ratio

1.00

No

*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

TRI DISTRICT

Date/Month:
Nov 25 2016

Highest single measurement:
0.059 NTU

Maximum 1  NTU for any single measurement

No

Soil Runoff

FT COLLINS

Date/Month: January

Highest single measurement:

0.32 NTU

No

GREELEY

Date/Month: April

Highest single measurement:

0.18 NTU

No

Turbidity

TRI DISTRICT

Month:
All 12 months

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

FT COLLINS

Month:
All 12 months

No

GREELEY

Month: December

No



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

Antimony

GREELEY

2016

0.7

0 to 1.4

2

ppb

6.0

6.0

No

Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder

Barium

TRI DISTRICT

2016

0.015

0.015 to 0.015

1

ppm

2.0

2.0

No

Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits

FORT COLLINS

2016

0.02

1

ppm

2.0

2.0

No

GREELEY

2016

0.04

0.02 to 0.07

2

ppm

2.0

2.0

No

Fluoride

TRI DISTRICT

2016

0.54

0.50 to 0.61

4

ppm

4.0

4.0

No

Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories

FORT COLLINS

2016

0.59

1

ppm

4.0

4.0

No

GREELEY

2016

0.64

0.45 to 0.75

11

ppm

4.0

4.0

No

Nitrate                  TRI DISTRICT

2016

0.11

0.11 to 0.11

1

ppm

10.0

10.0

No

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

FORT COLLINS

2016

0.09

1

ppm

10.0

10.0

No

Selenium                  GREELEY

2016

1.15

0 to 2.3

2

ppb

50.0

50.0

No

Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines

Sodium                  TRI DISTRICT

2016

14.4

14.4 to 14.4

1

ppm

NA

NA

NA

NA

GREELEY

2016

18.75

8 to 29.5

2

ppm

NA

NA

NA



Disinfectants Sampled in the Distribution System

TT Requirement: At least 95% of all 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

Contaminant Name

Time Period

Results

Number of Samples Below Level

Sample Size

TT Violation

MRDL

Chlorine

December, 2016

Lowest period percentage of samples meeting TT requirement: 100%

0

10

No

4.0 ppm



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

TRI DISTRICT

2016

0

2196

TT = No more than 4 hours with a sample below 0.2 ppm

No

Water Additive to control microbes

FORT COLLINS

2016

0

2196

TT = No more than 4 hours with a sample below 0.2 ppm

No

Chlorine/Chloramine

GREELEY

2016

0

3168

TT = No more than 4 hours with a sample below 0.8 MG/L

No

Water Additive to control microbes

Chlorine Dioxide

TRI DISTRICT

2016

0

366

MRDL = 800 ppb

No

Water Additive to control microbes

GREELEY

2016

0

366

MRDL = 800 ppb

No

Chlorite

TRI DISTRICT

2016

0

366

MRDL = 1.0 ppm

No

Byproduct of drinking water disinfection



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

Chlorite

2016

0.54

0.43 to 0.67

12

ppm

1.0

0.8

N/A

No

Byproduct of drinking water disinfection



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

06/06/2015 to 06/12/2015

0.34

30

ppm

1.3

0

No

Corrosion of household plumbing systems; Erosion of natural deposits

Lead

06/06/2015 to 06/12/2015

8.5

30

ppb

15.0

2

No

Corrosion of household plumbing systems; Erosion of natural deposits



Unregulated Contaminate Monitoring Rule 3 (UCMR3)

Under the 1996 amendments to the federal Safe Drinking Water Act, the U.S. Environmental Protection Agency is required once every five years to issue a new list of up to 30 unregulated contaminants for which public water systems must monitor.  The intent of this rule is to provide baseline occurrence data that the EPA can combine with toxicological research to make decisions about potential future drinking water regulations.


North Weld County Water District is required to sample at the entry point into our distribution system and at the maximum residence time in our distribution system for a total of 21 unregulated contaminants.  Of the 21 unregulated contaminates sampled for, there were only four (4) that were detected.

Contaminant Name

Year

Range of Results

Average

Unit of Measure

Violation?

Typical Sources

Chlorate

2013

36 to 71

54

ppb

No

Byproduct of drinking water disinfection

Strontium

2013

43 to 45

44

ppb

No

Naturally occurring element

Vanadium

2013

0 to 0.2

0.1

ppb

No

Naturally occurring element

Hexavalent Chromium

2013

0.04 to 0.09

0.06

ppb

No

Naturally occurring metal



Cryptosporidium and E. Coli at the Combined Raw Water Source

Contaminant Name

Year

Number of Positive

Sample Size

E.Coli

TRI DISTRICT

2016

3

3

GREELEY

2016

13

18

Cryptospordium

GREELEY

2016

1

18

Cryptosporidium is a microbial pathogen found in surface water throughout the United States. Although filtration removes cryptosporidium, the most commonly used filtration methods cannot guarantee 100 percent removal. Our monitoring indicates the presence of these organisms in our source water and/or finished water. Current test methods do not allow us to determine if the organisms are dead or if they are capable of causing disease. Ingestion of cryptosporidium may cause cryptosporidiosis, an abdominal infection. Symptoms of infection include nausea, diarrhea, and abdominal cramps. Most healthy individuals can overcome the disease within a few weeks. However, immuno-compromised people are at greater risk of developing life-threatening illness. We encourage immuno-compromised individuals to consult their doctor regarding appropriate precautions to take to avoid infection. Cryptosporidium must be ingested to cause disease, and it may be spread through means other than drinking water.



Violations, Significant Deficiencies, and Formal Enforcement Actions

No Violations or Formal Enforcement Actions