CASTLE PINES NORTH MD 2021 Drinking Water Quality Report Covering Data For Calendar Year 2020
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CASTLE PINES NORTH MD 2021 Drinking Water Quality Report
Covering Data For Calendar Year 2020
Public Water System ID: CO0118006
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 JIM WORLY at 303-688-8550 with any questions or for public participation opportunities
that may affect water quality. Please see the water quality data from our wholesale system(s) (either attached or
included in this report) for additional information about your drinking water.
General Information In order to ensure that tap water is safe to drink, the Colorado
All drinking water, including bottled water, may reasonably be Department of Public Health and Environment prescribes
expected to contain at least small amounts of some contaminants. regulations limiting the amount of certain contaminants in water
The presence of contaminants does not necessarily indicate that the provided by public water systems. The Food and Drug
water poses a health risk. More information about contaminants and Administration regulations establish limits for contaminants in
potential health effects can be obtained by calling the Environmental bottled water that must provide the same protection for public
Protection Agency’s Safe Drinking Water Hotline (1-800-426-4791) health.
or by visiting epa.gov/ground-water-and-drinking-water.
Lead in Drinking Water
Some people may be more vulnerable to contaminants in drinking If present, elevated levels of lead can cause serious health problems
water than the general population. Immunocompromised persons (especially for pregnant women and young children). It is possible
such as persons with cancer undergoing chemotherapy, persons who that lead levels at your home may be higher than other homes in the
have undergone organ transplants, people with HIV-AIDS or other community as a result of materials used in your home’s plumbing. If
immune system disorders, some elderly, and infants can be you are concerned about lead in your water, you may wish to have
particularly at risk of infections. These people should seek advice your water tested. When your water has been sitting for several
about drinking water from their health care providers. For more hours, you can minimize the potential for lead exposure by flushing
information about contaminants and potential health effects, or to your tap for 30 seconds to 2 minutes before using water for drinking
receive a copy of the U.S. Environmental Protection Agency (EPA) or cooking. Additional information on lead in drinking water, testing
and the U.S. Centers for Disease Control (CDC) guidelines on methods, and steps you can take to minimize exposure is available
appropriate means to lessen the risk of infection by Cryptosporidium from the Safe Drinking Water Hotline (1-800-426-4791) or at
and microbiological contaminants call the EPA Safe Drinking Water epa.gov/safewater/lead.
Hotline at (1-800-426-4791).
Source Water Assessment and Protection (SWAP)
The sources of drinking water (both tap water and bottled water) The Colorado Department of Public Health and Environment may
include rivers, lakes, streams, ponds, reservoirs, springs, and wells.
have provided us with a Source Water Assessment Report for our
As water travels over the surface of the land or through the ground, water supply. For general information or to obtain a copy of the
it dissolves naturally occurring minerals and, in some cases, report please visit wqcdcompliance.com/ccr. The report is located
radioactive material, and can pick up substances resulting from the under “Guidance: Source Water Assessment Reports”. Search the
presence of animals or from human activity. Contaminants that may table using 118006, CASTLE PINES NORTH MD, or by contacting
be present in source water include: JIM WORLY at 303-688-8550. The Source Water Assessment
Report provides a screening-level evaluation of potential
•Microbial contaminants: viruses and bacteria that may come from contamination that could occur. It does not mean that the
sewage treatment plants, septic systems, agricultural livestock contamination has or will occur. We can use this information to
operations, and wildlife. evaluate the need to improve our current water treatment capabilities
•Inorganic contaminants: salts and metals, which can be naturally- and prepare for future contamination threats. This can help us ensure
occurring or result from urban storm water runoff, industrial or that quality finished water is delivered to your homes. In addition,
domestic wastewater discharges, oil and gas production, mining, or the source water assessment results provide a starting point for
farming. developing a source water protection plan. Potential sources of
•Pesticides and herbicides: may come from a variety of sources, contamination in our source water area are listed on the next page.
such as agriculture, urban storm water runoff, and residential uses.
•Radioactive contaminants: can be naturally occurring or be the Please contact us to learn more about what you can do to help
result of oil and gas production and mining activities. protect your drinking water sources, any questions about the
•Organic chemical contaminants: including synthetic and volatile Drinking Water Quality Report, to learn more about our system, or
organic chemicals, which are byproducts of industrial processes and to attend scheduled public meetings. We want you, our valued
petroleum production, and also may come from gas stations, urban customers, to be informed about the services we provide and the
storm water runoff, and septic systems. quality water we deliver to you every day.
CASTLE PINES NORTH MD, PWS ID: CO0118006 2021 CCR Page 1 of 5
Our Water Sources
Sources (Water Type - Source Type) Potential Source(s) of Contamination
A7 WELL (Groundwater-Well)
DE7 WELL (Groundwater-Well)
A6 WELL (Groundwater-Well)
DE6 WELL (Groundwater-Well)
A5 WELL (Groundwater-Well)
PURCHASED WATER FROM CO0118015 (Surface Water-
Consecutive Connection) Aboveground, Underground and Leaking Storage Tank Sites,
PURCHASED FROM CASTLE PINES VILLAGE (Groundwater- Other Facilities, Low Intensity Residential, Urban Recreational
Consecutive Connection) Grasses, Fallow, Evergreen Forest, Septic Systems, Road Miles
A1 WELL (Groundwater-Well)
A2 WELL (Groundwater-Well)
A3 WELL (Groundwater-Well)
A4 WELL (Groundwater-Well)
LDA1 WELL (Groundwater-Well)
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.
CASTLE PINES NORTH MD, PWS ID: CO0118006 2021 CCR Page 2 of 5• 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.
Detected Contaminants
CASTLE PINES NORTH MD 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 Time Period Results Number of Samples Sample TT MRDL
Name Below Level Size Violation
Chlorine December, 2020 Lowest period percentage of samples 0 10 No 4.0 ppm
meeting TT requirement: 100%
Lead and Copper Sampled in the Distribution System
Contaminant Time 90th Sample Unit of 90th Sample 90th Typical Sources
Name Period Percentile Size Measure Percentile Sites Percentile
AL Above AL
AL Exceedance
Copper 09/30/2020 0.04 20 ppm 1.3 0 No Corrosion of
to household plumbing
09/30/2020 systems; Erosion of
natural deposits
Lead 09/30/2020 2.3 20 ppb 15 0 No Corrosion of
to household plumbing
09/30/2020 systems; Erosion of
natural deposits
CASTLE PINES NORTH MD, PWS ID: CO0118006 2021 CCR Page 3 of 5Inorganic Contaminants Sampled at the Entry Point to the Distribution System
Contaminant Year Average Range Sample Unit of MCL MCLG MCL Typical Sources
Name Low – High Size Measure Violation
Barium 2019 0.09 0.09 to 0.09 1 ppm 2 2 No Discharge of
drilling wastes;
discharge from
metal refineries;
erosion of natural
deposits
Fluoride 2020 0.73 0.73 to 0.73 1 ppm 4 4 No Erosion of natural
deposits; water
additive which
promotes strong
teeth; discharge
from fertilizer and
aluminum
factories
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 Year Average Range Sample Unit of Secondary Standard
Name Low – High Size Measure
Sodium 2019 20.4 20.4 to 20.4 1 ppm N/A
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
REVISED TOTAL COLIFORM FAILURE TO HAVE ADEQUATE 06/20/2019 - 01/17/2020
RULE (RTCR) COLIFORM BACTERIA SAMPLE SITES -
R518
CHLORINE FAILURE TO MONITOR AND/OR 06/20/2019 - 01/17/2020
REPORT - R212
CASTLE PINES NORTH MD, PWS ID: CO0118006 2021 CCR Page 4 of 5Non-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
Additional Violation Information
Please share this information with all the other people who drink this water, especially those who may not have received this notice
directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public
place or distributing copies by hand or mail.
Describe the steps taken to resolve the violation(s), and the anticipated resolution date: Sample sites have been added through out district
to meet requirements.
New Sample site has been added to meet requirement.
CASTLE PINES NORTH MD, PWS ID: CO0118006 2021 CCR Page 5 of 5Highlands Ranch, CO
Permit Number 433
water wisely.
U.S. POSTAGE
PRSRT STD
CRRT WSS
PAID
info@centennialwater.org
smart. Use
303-791-0430 Be drought
centennialwater.org
contact Centennial Water at 303-791-2185 ext. 3523.
Assessment Reports and search by county. You can also
wqcdcompliance.com/ccr. Click on Source Water
You may obtain a copy of the report by visiting
Roads l
Septic systems l
l Evergreen forest
l Pasture/hay
l Fallow
l Row crops
l Urban recreation grasses
l High/low intensity residential
l Commercial/industrial/transportation
l Other facilities
l Existing/abandoned mine sites
l Solid waste sites
Residential Customer
sites
l Aboveground, underground and leaking storage tank
l Permitted wastewater discharge sites
l Solid waste sites
l Chemical inventory/storage sites
l Hazardous waste generators
l Abandoned contaminated sites
following:
of contamination in our source water may including the
mean contamination has or will occur. Potential sources
Report
Centennial Water & Sanitation District
public drinking water source to contamination. It does not
The report analyzes potential susceptibility of each
Water Quality groundwater and surface water supplies.
Highlands Ranch, CO 80129
Water Assessment Report for Centennial Water’s
Sanitation District (Centennial Water) with a Source
2021 Environment (CDPHE) provided Centennial Water and
The Colorado Department of Public Health and
62 Plaza Drive
Assessment Report
Source Water
Q&A About the Quality of Your Water Water Sources
Centennial Water & Sanitation District is committed to minerals and naturally occurring radioactive material, and The community’s water supply comes from a combination
providing a safe and dependable supply of high quality can pick up substances resulting from the presence of of surfce water and groundwater. Use of these two water
drinking water. Last year, as in years past, your tap water animals or from human activity. These contaminants may sources is known as a conjunctive use system.
met all U.S. Environmental Protection Agency (EPA) and include: Surface water is renewable while the deep groundwater
state drinking water health standards. Our primary surface l Microbial contaminants, such as viruses and bacteria, is mainly non-renewable; therefore, groundwater is used
water source is the South Platte River which is diverted that may come from sewage treatment plants, septic primarily as a back up water source to the surface water.
into McLellan Reservoir and the South Platte Reservoir for systems, agricultural livestock operations and wildlife. Centennial Water uses on average 85% surface water
storage. Our secondary water source is nontributary wells l Inorganic contaminants, such as salts and metals, which annually.
in Denver Basin aquifers. can be naturally occurring or result from urban stormwater Groundwater wells in the following Denver Basin aquifers
runoff, industrial, or domestic wastewater discharges, oil l Denver
Is our community’s drinking water and gas production, mining or farming. l Arapahoe
regularly tested? l Pesticides and herbicides, which may come from a l Laramie - Fox Hills
Yes. Centennial Water routinely monitors constituents in l South Platte River alluvium
variety of sources such as agriculture, urban stormwater
drinking water according to federal and state laws. The
runoff and residential uses.
table in this report shows the monitoring results for the Surface water storage reservoirs
period of Jan. 1 through Dec. 31, 2020. l Organic chemical contaminants, including synthetic l Plum Creek
and voltatile organic chemicals, which are byproducts of l Dad Clark Gulch
industrial processes and petroleum production, and can
Are there contaminants in drinking water? l South Platte River
All drinking water, including bottled drinking water, also come from gas stations, urban stormwater runoff and
may contain trace contaminants. The presence of septic systems. Raw water storage reservoirs
contaminants does not necessarily pose a health risk. l Radioactive contaminants, which can be naturally l South Platte Reservoir
Immuno–compromised people such as people with cancer ocurring, or the result of oil and gas production and mining l McLellan Reservoir
undergoing chemotherapy, people who have undergone activities. l Chatfield Reservoir
organ transplants, people with HIV/AIDS or other immune To ensure tap water is safe to drink, the EPA prescribes
system disorders, some elderly individuals, and infants, regulations that limit the amount of certain contaminants For more information about water sources and to view a
can be particularly at risk of infections. These people in water provided by public water systems. The Food detailed list, visit centennialwater.org.
should seek advice about drinking water from their health and Drug Administration regulations establish limits for
care providers. For more information about contaminants contaminants in bottled water, which must provide the Volunteers sought for home
and potential health effects, or to receive a copy of the same protection for public health. water sampling
EPA and the U.S. Centers for Disease Control guidelines
Centennial Water is seeking homeowners to
on appropriate means to lessen the risk of infection by How can I learn more about Highlands participate in a sampling program required
cryptosporidium and microbiological contaminants, call the Ranch water? by the Colorado Department of Public Health and
EPA Safe Drinking Water Hotline at 1-800-426-4791. If you have questions about this report or your water Environment. If you live in a single-family home built
services, please contact Centennial Water’s lab at between 1983 and 1987, we want to hear from you.
Why does drinking water sometimes 303-791-2185, ext. 3523. We want you to be informed Participants will receive a gift card as a thank you for
contain contaminants? about your water utility. Attending a board meeting is a participating.
The sources of drinking water (both tap water and bottled great way to learn more about Centennial Water’s water With the assistance of homeowners, Centennial Water
water) include rivers, lakes, streams, ponds, reservoirs, supply. Meetings are held at the Hendrick Office Building, will test the amount of lead and copper levels in water
springs and wells. As water travels over the surface of the 62 Plaza Dr., Highlands Ranch, CO 80129. Please visit at the tap. This is not a new program, and is something
land or through the ground, it dissolves naturally-occurring centennialwater.org for a board meeting schedule. required of all water districts across the state.
If you are interested in participating, please email
Sign-up for Centennial Water’s eNewsletter. info@centennialwater.org org call 303-791-2185.
Text 22828 to CWSD to sign-up.2021 Highlands Ranch Water Quality Report
The Water Quality Data Table to Results of Lead Monitoring
the right contains many terms and Pregnant women and young children are typically more vulnerable to lead in drinking water than the general population. It is possible
abbreviations that may be unfamiliar. 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
The following definitions should help you are concerned about elevated lead levels in your home’s water, you may wish to have your water tested and flush your tap for 30
you better understand these terms: seconds to two minutes before using tap water. Additional information is available from the Safe Drinking Water Hotline at
Action Level (AL): The concentration 1-800-426-4791 or online at epa.gov/safewater/lead.
of a contaminant, if exceeded, triggers
treatment or other requirements a water Centennial Water and Sanitation District’s Water Quality Data Table
system must follow.
PWSID # CO 0118015 The table below lists all of the drinking water contaminants detected during the calendar year of this
Maximum Contaminant Level Goal report. The presence of contaminants in water does not necessarily indicate the water poses a health
(MCLG): The level of a contaminant risk. Unless otherwise noted, the data presented in this table is from testing done from January 1 to December 31, 2020. According
in drinking water, below which there is to either EPA or state requirements, certain contaminants may be monitored less than once per year because the concentrations of
no known or expected risk to health. these contaminants do not change frequently. The state has issued waivers for monitoring asbestos, cyanide, dioxin and glyphosate.
MCLGs allow for a margin of safety.
Maximum Contaminant Level (MCL): Regulated Results at the Meets
The highest level of a contaminant Copper and Lead 90th Percentile AL MCLG EPA Standards Likely Source
allowed in drinking water. MCLs are Copper (ppm) 0.32-0.33 1.3 1.3 Yes Corrosion of household plumbing systems
set as close to the MCLGs as feasible (0 samples exceeded the AL)
using the best available treatment Lead (ppb) 2 15 0 Yes Corrosion of older household plumbing systems
technology. (0 samples exceeded the AL)
Maximum Residual Disinfectant
Level Goal (MRDLG): The level of a Regulated Disinfectants and Range Highest Locational Meets
Disinfection Byproducts (all data) RAA Level MCL MCLG EPA Standards Likely Source
drinking water disinfectant, below which
there is no known or expected risk to Chloramines (ppm) 0.5-3.8 NA 4 4 Yes Water additive used to control microbes
(MRDL) (MRDLG)
health. MRDLGs do not reflect the
benefits of the use of disinfectants to Haloacetic Acids (ppb)You can also read
