2020 ANNUAL DRINKING WATER QUALITY REPORT LAS COLINAS WATER TREATMENT PLANT
PWS ID: 3354944

THIS RF,PORT IS BEING POSTED AT THE CLUBHOUSE. COPIES WILL BE FURNISHED TO CUSTOMERS UPON RF,QUEST

We are pleased to present to you this year's Annual Water Quality Report. This report is designed to inform you about the quality water and services we deliver to you every day. Our constant goal is to provide you with a dependable supply of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. We are committed to ensuring the quality of your water. Our water is obtained from ground water sources and is chlorinated for disinfection purposes.

Our source water is pumped from the Floridian Aquifer, one of the world' s most protected sources. The water is treated with chlorine to assure disinfection. The Florida Department of Environment al Protection (FDEP) performed a Source Water Assessment (SWAPP) in 2020 to determine the susceptibility of our water supply to contamination. The analysis was completed to tell how likely it is that our water could become contaminated from landfills, underground or above ground storage tanks and wastewater disposal areas. A 1000 foot radius circle around each well was used and it was determined by the FDEP that there was no potential sources for contamination. For more information regarding the assessment, please visit the DEP website at http://www.dep.state .fl.us/sw app

This report shows our water quality results and what they mean.

If you have any questions about this report or concerning your water utility, please contact Plant Technicians at (352)787-2944. We encourage our valued customers to be informed about their water utility.

LAS COLINAS routinely monitors for contaminants in your drinking water according to Federal and State laws, rules, and regulations. Except where indicated otherwise, this report is based on the results of our monitoring for the period of January 1st to December 31st 2020.

" As authorized and approved by EPA, the state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminates are not expected to vary significantly from year to year. Some
of our data (e.g., for organic contaminants), though representa tive, is more than a year old. "

In the table shown, you may find unfamiliar terms and abbreviations. To help you better understand these terms, we have provided the following definitions:

Maximum Contaminant Level or MCL: The highest level of contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

Maximum Contaminant Level Goal or 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.

Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

LAS COLINAS WATER TREATMENT PLANT PWS ID: 3354944
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Picocuri Per Liter (pCi/L): Measure of the radioactivity in water.

Treatment Technique (TT): A required process intended to reduce the level of contaminant in drinking water.

Maximum Residual Disinfectant Level (MRDL): The highest level of disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

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.

Not Applicable (N/A): Does not apply.

"ND" means not detected and indicates that the substance was not found by laboratory analysis.

Parts Per Million (ppm) or Milligrams Per Liter (MG/L): One part by weight of analyte to 1 million parts by weight of the water sample.

Parts Per BiUion (ppb) or Micrograms Per Liter (ug/1): One part by weight of analyte to 1 billion parts by weight of the water sample.

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, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
Inorganic contaminants, such as 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, which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses.
Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.

LAS COLINAS WATER TREATMENT PLANT PWS ID: 3354944
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In order to ensure that tap water is safe to drink, the 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 public health.

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 at 1-800-426-4791.

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. LAS COLINAS WATER TREATMENT PLANT 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.

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Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-comprornised 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 from infections. These people should seek advice about drinking water from their healthcare providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline (800)426-4791.
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Please call our office if you have any questions.

LAS COLINAS WATER TREATMENT PLANT
PWS ID: 3354944
Water Oualitv Test Results

Contaminant and Unit of Measurement	Dates of sampling
(mo./yr.)	MCL
Violation
YIN	Level Detected	Range of Results	
MCLG	
MCL	Likely Source of Contamination	
Radioactive Contaminants	
Radium 226 + 228 or combined radium (pCi/L)	812018	N	1.5	NIA	0	5	Erosion of natural deposits	

Contaminant and Unit of Measurement	Dates of
sampling (mo./yr.)	MCL
Violation
YIN	Level Detected	Range of Results	
MCLG	
MCL	Likely Source of Contamination	
Inorganic Contaminants	

Barium (ppm)	
812018	
N	
0.0127	
NIA	
2	
2	Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits	
Sodium (ppm)	812018	N	5.98	NIA	NIA	160	Salt water intrusion , leaching from soil	

Nitrate (as Nitrogen) (ppm)	

1212020	

N	

0.060	
NIA	

10	

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

Chromium (ppb)	
8/2018	
N	
1.30	NI A	
100	
100	Discharge from steel
and pulp mills; erosion of natural deposits	

Lead (point of entry) (ppb)	

812018	

N	

1.40	
NIA	

0	

15	Residue from man-made pollution such as auto emissions and paint; lead pip, casing and
solder	

Stage 2 Disinfectants and Disinfection B -Products	
Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	MCL
Violation
YIN	Level Detected	Range of Results	
MCLGor MRDLG	
MCLorMRDL	Likely Source of Contamination	
Chlorine (ppm)	1-1212020	N	0.87	0.45-1.25	MRDLG = 4	MRDL = 4.0	Water additive used to control microbes	
Haloacetic Acids (fi ve) (HAAS)
(oob)	
912018	
N	
24.7	NIA	NI A	
MCL = 60	By-product of drinking water disinfection	
TTHM [Total trihalomethanes] (ppb)	
9/2018	
N	
11.8	NIA	NIA	
MCL= 80	By-product of drinking water disinfection	

LAS COLINAS WATER TREATMENT PLANT PWS ID: 3354944
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Contaminant and Unit of Measurement	Dates of sampling (mo./yr.)	AL
Violation
YIN	90th Percentile Result	No. of sampling sites exceeding the
AL	
MCLG	
AL (Action Level)	
Likely Source of Contamination	
Lead and Comier (TaR Water}	

Copper (tap water) (ppm)	

6/2019	

N	

0.0402	

0	

1.3	

1.3	Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives	

Lead (tap water) (ppb)	
6/2019	
N	
2.3	
0	
0	
15	Corrosion of household plumbing systems, erosions of natural deposits	

Lead in drinking water is rarely the sole cause of lead poisoning, but it can add to a person's total lead exposure. All potential sources of lead in the household should be identified and removed, replaced or reduced.