Water Quality Report 2021 City of Allen - Look inside for cost-saving water conservation rebates! - Allen, TX
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Look inside for cost-saving
water conservation rebates!
2021 City of Allen
Water Quality Report
Este reporte contiene información importante sobre el agua potable.
Para asistencia en español, favor de llamar al teléfono 214.509.4500.
A MESSAGE FROM THE CITY OF ALLEN
From pipe to tank to tap, we deliver
safe, high-quality drinking water
City of Allen Water Utility on our water sources, treatment Drinking Water Watch at dww.tceq.
employees take pride in delivering processes and more, please visit texas.gov/DWW.
safe and “superior” quality drinking www.ntmwd.com.
water to our customers. Our City of Allen Water
The TCEQ completed an
water system is rated “superior” assessment of the NTMWD Wylie Distribution System
by the Texas Commission on Water Treatment Plant source The pumping and storage station
Environmental Quality (TCEQ). water from Lavon Lake, and the is comprised of two pump
This rating reflects the hard work results indicate that some of stations, five ground storage tanks
and efforts by our employees to those sources are susceptible and five elevated storage tanks.
protect your health by delivering to certain contaminants. The The ground storage capacity is 24
and maintaining safe and reliable sampling requirements for the million gallons. Elevated storage
drinking water. We recognize NTMWD Wylie Water Treatment capacity is 9 million gallons with
the North Texas Municipal Water Plant Water System are based on a system pumping capacity of 80
District (NTMWD) for producing this susceptibility and previous million gallons per day.
high-quality drinking water. sample data. Any detections of The Water Distribution System
these contaminants may be found
Where does your water is comprised of more than 501
in this Consumer Confidence miles of water mains, 5,456
come from? Report. For more information hydrants and 34,023 metered
The Water Utilities Department on source water assessments service connections. In the water
is a municipal water distribution and protection efforts at the loss audit submitted to the Texas
and wastewater collection NTMWD Wylie Water Treatment Water Development Board for
utility owned by the City of Plant system, contact the the time period of Jan.-Dec. 2020
Allen. Wholesale treated water NTMWD Environmental Services our system lost an estimated
is purchased from NTMWD and Department at 972.442.5405 or 552,769,584 gallons of water. If
delivered to our ground storage environmental.info@ntmwd.com. you have any questions about
tanks. From there, the water is Further details about source- the water loss audit, please call
delivered to customers through water assessments are available in 214.509.4502.
the city’s distribution system.
NTMWD gets raw water from
Lavon Lake and treats it at the City of Allen Distribution Samples Taken Last Fiscal Year
Wylie Water Treatment Plant. In
addition to Lavon Lake, NTMWD Bacteriological Scheduled...................................................................................1,320
holds water rights in Lake Texoma, Disinfectant Residual Scheduled....................................................................1,095
Jim Chapman Lake (Cooper Bacteriological Construction.................................................................................. 82
Lake), Lake Tawakoni and the Disinfectant Residual Construction................................................................... 82
East Fork Raw Water Supply Trihalomethane Samples............................................................................................32
Project (Wetland) which augment Haleoacetic Acid Samples..........................................................................................32
supplies. For detailed information
Why is this report Secondary constituents Ozonation
important? Many constituents (such as calcium, NTMWD completed
Drinking water, including bottled sodium or iron) found in drinking implementation of ozone for
water, may reasonably be expected water can cause taste, color and primary disinfection at the Wylie
to contain at least small amounts odor problems. The taste and odor Water Treatment Plants in 2014 for
of contaminants. The presence of constituents are called secondary compliance with the Disinfection
contaminants do not necessarily constituents and are regulated By-Products 2 Rule (DBP2). The
pose a health risk. The U.S. by the State of Texas, not the EPA. DBP2 Rule changed the compliance
Environmental Protection Agency These constituents are not causes criteria for trihalomethanes and
(EPA) prescribes regulations for health concerns. Therefore, haloacetic acids which are created
which limit the amount of certain secondaries are not required to be when chlorine is used as the
contaminants in water provided reported in this document but may primary disinfectant. Ozone is also
by public water systems. The Food affect the appearance and taste of effective in treating taste and odor
and Drug Administration (FDA) your water. compounds associated with the
regulations establish limits for District’s surface water sources.
Cryptosporidium
contaminants in bottled water, Chloramines
which must provide the same NTMWD has tested lake water and
treated water for the presence of NTMWD uses Chloramines for
protection for the health of the disinfection purposes. The benefit
general public. cryptosporidium for several years.
Cryptosporidium has been absent in of using Chloramines is to reduce
This Consumer Confidence Report all samples tested. Cryptosporidium the levels of disinfection byproducts
(CCR) is an annual summary of the is a protozoan which is so small in the system, while still providing
quality of drinking water the City of it can be seen only with a protection from waterborne
Allen provides to customers. The microscope. It affects the digestive disease.
CCR lists all the federally regulated tracts of humans and animals. At The use of Chloramines can cause
or monitored contaminants this time, there is no specific drug problems to persons dependent
which have been found in your therapy proven to be effective, on dialysis machines. A condition
drinking water. The EPA requires but people with healthy immune known as hemolytic anemia can
water systems to test for up to 97 systems will usually recover from occur if this disinfectant is not
contaminants. Our drinking water a cryptosporidium infection within completely removed from the
meets or exceeds all federal (EPA) two weeks. NTMWD continues to water that is used for the dialysate.
drinking water requirements. diligently test both source water Consequently, the pretreatment
and treated water for the presence scheme used for the dialysis units
All Drinking Water May
of cryptosporidium. must include some means, such
Contain Contaminants as a charcoal filter, for removing
Where do these come from? As SPECIAL NOTICE the Chloramine from the water
water travels over the surface of Weakened Immune used. Medical facilities should
the land or through the ground, also determine if additional
Systems
it dissolves naturally-occurring precautions are required for other
You may be more vulnerable
minerals and, in some cases, medical equipment. In addition,
than the general population to
radioactive material, and can pick Chloraminated water may be toxic
certain microbial contaminants,
up substances resulting from the to fish.
such as cryptosporidium, in
presence of animals or human
drinking water. Infants, some If you have a fish tank, please make
activity.
elderly, or immunocompromised sure that the chemicals or filters
Contaminants that may be persons such those undergoing that you are using are designed for
present in the source water chemotherapy for cancer; use in water that has been treated
before treatment may include: those who have undergone with Chloramines. You may also
microbes, inorganic contaminants, organ transplants; those who need to change the type of filter
pesticides, herbicides, radioactive are undergoing treatment with that you use for fish tanks.
contaminants and organic chemical steroids; and people with HIV/
contaminants. NTMWD conducts AIDS or other immune system
daily tests on both the raw water in disorders can be particularly at
Lavon Lake and the treated water risk from infections. You should
delivered to the City of Allen. seek advice about drinking water
More information about from a physician or health care
contaminants and potential health provider. Additional guidelines on
effects can be obtained by calling appropriate means to lessen the
the EPA’s Safe Drinking Water risk of infection by cryptosporidium
Hotline at 1.800.426.4791. are available from the Safe Drinking
Water Hotline at 1.800.426.4791.
Water Quality Data for Year 2020
Coliform Bacteria
Total Coliform Maximum Highest No. of Coliform or E. Coli Maximum
MCLG Violation Likely Source of Contamination
Contaminant Level Positive Contaminant Level
0 1 positive monthly sample 0 0 No Naturally present in the environment.
NOTE: Reported monthly tests found no fecal coliform bacteria. Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially
harmful bacteria may be present.
Regulated Contaminants
Disinfectants and Disinfection Collection Highest Level Range of Levels MCLG MCL Units Violation Likely Source of Contamination
By-Products Date Detected Detected
Total Haloacetic Acids (HAA5) 2020 24.8 12.0-24.8 No goal for the total 60 ppb No By-product of drinking water disinfection.
Total Trihalomethanes (TTHM) 2020 41.2 22.0-41.2 No goal for the total 80 ppb No By-product of drinking water disinfection.
Bromate 2020 8.91 8.91-8.91 5 10 ppb No By-product of drinking water ozonation.
NOTE: Not all samples results may have been used for calculating the Highest Level Detected because some results may be part of an evaluation to determine where compliance
sampling should occur in the future. TCEQ only requires one sample annually for compliance testing.
Collection Highest Level Range of Levels
Inorganic Contaminants MCLG MCL Units Violation Likely Source of Contamination
Date Detected Detected
Discharge of drilling wastes; discharge from metal refineries; erosion of
Barium 2020 0.061 0.058-0.061 2 2 ppm No
natural deposits.
Erosion of natural deposits; water additive which promotes strong
Fluoride 2020 0.225 0.218-0.225 4 4 ppm No
teeth; discharge from fertilizer and aluminum factories.
Runoff from fertilizer use; leaching from septic tanks; sewage; erosion of
Nitrate (measured as Nitrogen) 2020 0.827 0.266-0.827 10 10 ppm No
natural deposits.
Nitrate Advisory: Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome.
Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant you should ask advice from your health care provider.
Collection Highest Level Range of Levels
Radioactive Contaminants MCLG MCL Units Violation Likely Source of Contamination
Date Detected Detected
Beta/photon emitters 2018 8.0 8.0-8.0 0 50 pCi/L No Decay of natural and man-made deposits.
Synthetic organic Range
contaminants including Collection Highest Level of Levels MCLG MCL Units Violation Likely Source of Contamination
pesticides and herbicides Date Detected Detected
Atrazine 2020 0.2 0.2-0.2 3 3 ppb No Runoff from herbicide used on row crops.
Di (2-ethylhexyl) phthalate 2020 0.6 0.6-0.6 0 6 ppb No Discharge from rubber and chemical factories.
Simazine 2020 0.08 0.07-0.08 4 4 ppb No Herbicide runoff.
Turbidity
Limit (Treatment Technique) Level Detected Violation Likely Source of Contamination
Highest single measurement 1 NTU 0.31 NTU No Soil runoff.
Lowest monthly percentage (%) meeting limit 0.3 NTU 100.00% No Soil runoff.
NOTE: Turbidity is a measurement of the cloudiness of the water caused by suspended particles. We monitor it because it is a good indicator of water quality and the effectiveness of our filtration.
Maximum Residual Disinfectant Level
Average Level of Lowest Result of Highest Result of
Disinfectant Type Year Quarterly Data Single Sample Single Sample MRDL MRDLG Units Source of Chemical
Chlorine Residual (Chloramines) 2020 2.64 0.63 3.83 4.00
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The City of Allen wants to help Low-Flow Toilet Did you know that runoff
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more rebate information visit qualifying low-flow toilet.
CityofAllen.org/WaterRebates.
Water Efficient Washing Do your best to keep our
SMART Irrigation Technology Machines waterways clean and never
Equipment 50% of the cost up to a maximum sweep or dump anything
50% of the cost up to a maximum of $75, $100 or $125, depending down storm drains.
of $125 for installation of qualifying on tier rating, for a qualifying
SMART irrigation technology water-efficient washing machine Our local streams, ponds
equipment. purchase. and lakes provide drinking
water, recreation, a habitat
for local wildlife and more. It
also violates City ordinance to
allow any pollutants to enter
the storm drain system.
LEARN MORE
CityofAllen.org/StormWater
ILLICIT DISCHARGE HOTLINE
214.509.4512
TERMS TO KNOW
The charts on this and the adjoining page list the contaminants detected in Allen drinking water during calendar
year 2020. Numerous tests detected no other contaminants. Listed below are the definitions for abbreviations on
the adjoining page. As noted, the water quality surpasses standards for each contaminant as required by law. For
additional information, please contact the Allen Water Utilities Department at 214.509.4502.
Maximum Contaminant Level (MCL) is the highest permissible level of ppb stands for “parts per billion” - or one ounce in 7,350,000 gallons of
a contaminant in drinking water. MCLs are set as close to the MCLGs as water.
feasible using the best available treatment technology. pCi/L stands for picocuries per liter. A measure of radioactivity.
Maximum Contaminant Level Goal (MCLG) is the level of a contaminant NTU stands for Nephelometric Turbidity Units. This is the unit to
in drinking water below which there is no known or expected health risk. measure water turbidity.
MCLGs allow for margin of safety.
Turbidity is a measure of water’s clarity. Turbidity has no health
Maximum Residual Disinfectant Level (MRDL) is the highest level of effects. However, turbidity can interfere with disinfection and provide a
a disinfectant allowed in drinking water. There is convincing evidence medium for microbial growth. Water with lower turbidity is clearer than
that addition of a disinfectant is necessary for control of microbial water with higher turbidity.
contaminants.
THM is the abbreviation for trihalomethanes, a by-product of disinfection
Maximum Residual Disinfectant Level Goal (MRDLG) is the level of a of water. Some people who drink water containing trihalomethanes in
drinking water disinfectant below which there is no known or expected excess of the MCL over many years may experience problems with their
risk to health. MRDLGs do not reflect the benefits of the use of disinfectants liver, kidneys, or central nervous system, and may have an increased
to control microbial contaminants. risk of getting cancer.
Action Level (AL) is the concentration of a contaminant which, if HAA stands for haloacedic acid, a by-product of disinfection.
exceeded, triggers treatment or other requirement which a water system
must follow. TOC is the abbreviation for total organic carbon.
ppm stands for “parts per million”-or one ounce in 7,350 gallons of water. MRL is the abbreviation for minimum reporting level.
Water Quality Data for Year 2020, cont.
Lead and Copper
Date
Lead and Copper Action Level (AL) 90th Percentile # Sites Over AL Units Violation Likely Source of Contamination
Sampled
Lead 7/29/2020 15 1.2 1 ppb No Corrosion of household plumbing systems; erosion of natural deposits.
Erosion of natural deposits; leaching from wood preservatives; corrosion
Copper 7/29/2020 1.30 0.62 0 ppm No
of household plumbing systems.
ADDITIONAL HEALTH INFORMATION FOR LEAD: 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. Allen is responsible for providing high quality drinking water, but 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.
Find your watering schedule
Customers may use sprinklers or irrigation systems up to
twice per week for landscape/lawn watering. Customers
must use the Water Conservation Plan Schedule
CHECK
Map to identify what days watering is permitted THE CLOCK!
for their neighborhood. Learn more at
From April 1 to October
CityofAllen.org/WaterConservation.
121
31, watering is prohibited
SH
from 10 a.m. to 6 p.m. to
reduce evaporation.
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75
WEDNESDAY
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FRIDAY
Watters Road
Exchange Parkway Exchange Parkway
Custer Road
Alma Drive
MONDAY SATURDAY
Malone Road
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en
McDermott Drive Main Street
Av
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THURSDAY
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Ange l Parkway
Bethany Drive
TUESDAY
Gr
Allen Heights Drive
SUNDAY
75
Bethany Drive
US
Hedgcoxe Road
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ite
Chaparral Road
Jup
PRIMARY DAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY SUNDAY
FRIDAY SATURDAY SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY
OPTIONAL DAY
Water only if conditions warrant!
Public Input Opportunities
Allen water utilities are part of the Community Services Department of the Allen City Government. The
Allen City Council meets the second and fourth Tuesdays of every month at 7 p.m. at Allen City Hall.
ATTEND A MEETING EMAIL US VISIT US ONLINE
305 Century Parkway coa@cityofallen.org CityofAllen.org
Allen, TX 75013
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