WATER QUALITY REPORT 2025
A MESSAGE FROM THE CITY OF ALLEN
City of Allen Water Utility employees take pride in delivering safe and “superior” quality drinking water to our customers. Our water system is rated “superior” by the Texas Commission on Environmental Quality (TCEQ). This rating reflects the hard work and efforts by our employees to protect your health by delivering and maintaining safe and reliable drinking water. We recognize the North Texas Municipal Water District (NTMWD) for producing high-quality drinking water.
WHERE DOES YOUR WATER COME FROM?
The Water Utilities Department is a municipal water distribution and wastewater collection utility owned by the City of Allen. Wholesale treated water is purchased from NTMWD and delivered to our ground storage tanks. From there, the water is delivered to customers through the city’s distribution system.
NTMWD gets raw water from Lavon Lake and Bois d’Arc Lake and treats it at the Wylie Water Treatment Plant and Leonard Treatment Plant. In addition to Lavon Lake and Bois d'Arc Lake, NTMWD holds water
rights in Lake Texoma, Jim Chapman Lake (Cooper Lake), Lake Tawakoni and the East Fork Raw Water Supply Project (Wetland) which augment supplies. For detailed information on our water sources, treatment processes and more, please visit www.ntmwd.com.
The TCEQ completes a Source Water Susceptibility Assessment for all public drinking water systems. The report describes the susceptibility and types of constituents that may come into contact with your drinking water source based on human activities and natural conditions. The system from which the city purchases its water received the assessment report. For more information on source water assessments and protection efforts contact the NTMWD at 972.442.5405 or by email at watersystem.info@NTMWD. com.
CITY OF ALLEN WATER DISTRIBUTION SYSTEM
The pumping and storage station is comprised of two pump stations, five ground storage tanks and five elevated storage tanks. The ground storage capacity is 24 million gallons. Elevated storage capacity is 9 million gallons with a system pumping capacity of 80 million gallons per day.
The Water Distribution System is comprised of more than 511 miles of water mains, 5,539 fire hydrants, 15,235 water valves and 33,795 metered service connections. In the water loss audit submitted to the Texas Water Development Board for the time period of Jan.-Dec. 2024 our system lost an estimated 762,006,675 gallons of water. If you have any questions about the water loss audit, please call 214.509.4502.
WHY IS THIS REPORT IMPORTANT?
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of contaminants. The presence of contaminants do not necessarily pose a health risk. The U.S. Environmental Protection Agency (EPA) prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for the health of the general public.
This Consumer Confidence Report (CCR) is an annual summary of the quality of drinking water the City of Allen provides to customers. The CCR lists all the federally regulated or monitored contaminants which have been found in your drinking water. The EPA requires water systems to test for over 90 contaminants. Our drinking water meets or exceeds all federal (EPA) drinking water requirements.
ALL DRINKING WATER MAY CONTAIN CONTAMINANTS
Where do these come from? 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 human activity.
Contaminants that may be present in the source water before treatment may include: microbes, inorganic contaminants, pesticides, herbicides, radioactive contaminants and organic chemical contaminants. NTMWD conducts daily tests on all raw water sources and the treated water delivered to the City of Allen. More information about contaminants and potential health effects can be obtained by calling the EPA’s Safe Drinking Water Hotline at 1.800.426.4791.
SECONDARY CONSTITUENTS
Many constituents (such as calcium, sodium or iron) found in drinking water can cause taste, color and odor problems. The taste and odor constituents are called secondary constituents and are regulated by the State of Texas, not the EPA. These constituents are not causes for health concerns. Therefore, secondaries are not required to be reported in this document but may affect the appearance and taste of your water.
CRYPTOSPORIDIUM
NTMWD has tested lake water and treated water for the presence of cryptosporidium for several years. Cryptosporidium has been absent in all samples tested. Cryptosporidium is a protozoan which is so small it can be seen only with a microscope. It affects the digestive tracts of humans and animals. At this time, there is no specific drug therapy proven to be effective, but people with healthy immune systems will usually recover from a cryptosporidium infection within two weeks. NTMWD continues to diligently test both source water and treated water for the presence of cryptosporidium.
NOTICE FOR THOSE WITH WEAKENED IMMUNE SYSTEMS
You may be more vulnerable than the general population to certain microbial contaminants, such as cryptosporidium, in drinking water. Infants, some elderly, or immunocompromised persons such those undergoing chemotherapy for cancer; those who have undergone organ transplants; those who are undergoing treatment with steroids; and people with HIV/AIDS or other immune system disorders can be particularly at risk from infections. You should seek advice about drinking water from a physician or health care provider. Additional guidelines on appropriate means to lessen the risk of infection by cryptosporidium are available from the Safe Drinking Water Hotline at 1.800.426.4791.
OZONATION
NTMWD completed implementation of ozone for primary disinfection at the Wylie Water Treatment Plants in 2014 for compliance with the Disinfection By-Products 2 Rule (DBP2). The DBP2 Rule changed the compliance criteria for trihalomethanes and haloacetic acids which are created when chlorine is used as the primary disinfectant. Ozone is also effective in treating taste and odor compounds associated with the District’s surface water sources.
CHLORAMINES
NTMWD uses Chloramines for disinfection purposes. The benefit of using Chloramines is to reduce the levels of disinfection byproducts in the system, while still providing protection from waterborne disease. The use of Chloramines can cause problems to persons dependent on dialysis machines. A condition known as hemolytic anemia can occur if this disinfectant is not completely removed from the water that is used for the dialysate. Consequently, the pretreatment scheme used for the dialysis units must include some means, such as a charcoal filter, for removing the Chloramine from the water used. Medical facilities should also determine if additional precautions are required for other medical equipment. In addition, Chloraminated water may be toxic to fish.
If you have a fish tank, please make sure that the chemicals or filters that you are using are designed for use in water that has been treated with Chloramines. You may also need to change the type of filter that you use for fish tanks.
WATER QUALITY AND SAFETY
