2018 DRINKING WATER QUALITY REPORT FOR 2017 DATA
ARE YOU IN THE KNOW? In 2016, the City of Southlake Public Works Department updated every water meter in Southlake with cellular technology that allows you to view your daily water use right on your phone, tablet, or computer. You can even set leak alerts so you can address any problems immediately and not be surprised by a large bill at the end of the month. Create your own EyeOnWater account!
Login to https://southlaketx.eyeonwater.com and then download the app. Customer Service is ready to help you get started just call (817) 748-8051!
Our Drinking Water Is Safe! The City of Southlake’s goal is to provide you with safe and reliable drinking water. We are happy to report that our water meets the standards for safe drinking water quality standards as set by the U.S. Environmental Protection Agency (EPA) and the Texas Commission on Environmental Quality (TCEQ). This report is a summary of the quality of the water we provided to you in 2017.
In This Water Quality Report: 1 A Guide to Your Water Quality 2 How to Read Your Water Quality Report Data 3 Regulated Contaminants Tested 4 Regulated Contaminants Tested — Continued 5 Microorganism Testing 6 Lead and Copper Testing 7 Unregulated Disinfection By-products 8 Funny Taste or Smell? 9 Southlake’s Water Source 10 Water Loss 11 Stormwater Quality 12 Put Down Some Roots 13 Protect Your Pipes 14 Defend Your Drains 15 Conservation — Water Smart, Southlake 16 Let’s Talk About It
A Guide to Your Water Quality This report is a summary of the quality of water we provided to our customers in 2017. Data found in the following pages was obtained from sampling protocols, as defined by the Environmental Protection Agency (EPA).
Definitions and Abbreviations Action Level: The concentration of a contaminant, which, if exceeded, triggers treatment or other requirements that a water system must follow.
there are no known or expected health risks. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
Grain/gallon: Number of grains of calcium carbonate dissolved in one gallon of water
MRL: Minimum Reporting Level; the lowest concentration of a constituent or a contaminant that can be measured by a laboratory.
MCL: Maximum Contaminant Level; the highest level of a contaminant allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology. MCLG: Maximum Contaminant Level Goal; the level of a contaminant in drinking water below which there is no known or expected health risks. MCLGs allow for a margin of safety. MRDL: Maximum Residual Disinfectant Level; the highest level of disinfectant allowed in drinking water. There is evidence that addition of a disinfectant is necessary for control of microbial contaminants. MRDLG: Maximum Residual Disinfectant Level Goal; the level of a drinking water disinfectant below which
N/A: Data field not applicable to the particular constituent we are reporting information about. NTU: Nepholomeric Turbidity Units; a measure of water turbidity or clarity. pCi/L: Picocuries per Liter; a measure of radioactivity. ppb: Parts per Billion or micrograms per liter (Âľg/L). ppm: Parts per Million or milligrams per liter (mg/L). TT: Treatment Technique; a required process intended to reduce the level of a contaminant in drinking water. Âľmhos/cm: Micromhos per centimeter; a measure of conductivity
1
How to Read Your Water Quality Report This Consumer Confidence Report is a summary of the constituents that are in your drinking water and how these constituents may affect your health. This quick reference may help you to better understand the information provided in the rest of this report. The amount, from lowest to highest, of this contaminant detected in our drinking water in 2017. Parts per million is equal to one teaspoon in 1,302 gallons.
Contaminant
The highest amount of a contaminant EPA allows in drinking water.
Below this level, a contaminant has no known or expected health risks.
Measure
2017 Level
Range of Detects
MCL
MCLG
Common Source of Substance
Substance 1
ppm
0.5
0.02-0.11
2
2
Discharge from drilling wastes, discharge from metal refineries
Substance 2
ppb
8.4
2.4-8.4
100
100
Erosion of natural deposits
Parts per billion is equal to one teaspoon in 1,302,000 gallons.
The average amount of this contaminant detected in our drinking water in 2017.
This describes some of the ways contaminants enter drinking water; wording is provided by EPA and may or may not apply to the City of Southlake.
2
Regulated Contaminants Tested in 2017 Contaminant Turbidity
Contaminant
Measure NTU
2017 Level
MCL
MCLG
Violation
Common Source of Substance
0.6 99.8%
TT = 1 TT = lowest monthly % of samples ≤ 0.3 NTU
N/A
No
Soil runoff (Turbidity is a measure of the cloudiness of water. It is an indicator of the effectiveness of the filtration system.)
Measure
2017 Level
Range of Detects
MRDL
MRDLG
Violation
Common Source of Substance
ppm
3.9
1.5-4.3
4
4
No
Water additive used to control microbes
Measure
2017 Level
Range of Detects
MCL
MCLG
Violation
Common Source of Substance
Bromate
ppb
2
0-13
10
0
No
By-product of drinking water disinfection
Haloacetic Acids (HAA5)
ppb
8.9
7.5-11
60
N/A
No
By-product of drinking water disinfection
Total Trihalomethanes
ppb
10.0
7.79-14.6
80
N/A
No
By-product of drinking water disinfection
MCL
MCLG
High
Low
Average
Violation
Common Source of Substance
TT = % removal
N/A
1
1
1
No
Naturally occurring
Chloramines
Contaminant
Contaminant Total Organic Carbon
Contaminant
Coliforms
Highest # of Positives
Total # of Positives of Fecal Coliform or E. coli Samples
Total Coliform MCL
Total Coliform MCLG
Fecal Coliform or E. coli MCLG
Violation
Likely Source of Contamination
0
0
1 positive monthly sample allowed
0
0
No
Naturally present in the environment
3
Contaminant
Measure
2017 Level
Range of Detects
MCL
MCLG
Violation
Common Source of Substance
Beta particles and photon emitters
pCi/L
5.6
4.4-5.6
50
0
No
Decay of natural and man-made deposits of certain minerals that are radioactive and may emit forms of radiation known as photons and beta radiation
Radium (-226/-228)
pCi/L
2.5
N/A
5
0
No
Erosion of natural deposits
Uranium
ppb
1.1
0-1.1
30
0
No
Erosion of natural deposits
Arsenic
ppb
2
0-2
10
0
No
Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Atrazine
ppb
0.1
0-0.1
3
3
No
Runoff from herbicide used on row crops
Barium
ppm
0.08
0.06-0.08
2
2
No
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Chromium (Total)
ppb
1.6
0-1.6
100
100
No
Discharge from steel and pulp mills, erosion of natural deposits
Cyanide
ppb
57
0-57
200
200
No
Discharge from plastic and fertilizer factories; discharge from steel and metal factories
Di (2-Ethylhexyl) phthalate
ppb
1.2
0-1.2
6
0
No
Discharge from rubber and chemical factories
Fluoride
ppm
0.66
0.32-0.66
4
4
No
Water additive to promote strong teeth; erosion of natural deposits; discharge from fertilizer and aluminum factories
Nitrate (measured as Nitrogen)
ppm
.76
0.13-0.76
10
10
No
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Nitrite (measured as Nitrogen)
ppm
.03
0.01-0.03
1
1
No
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Simozine
ppb
0.06
0-0.06
4
4
No
Herbicide runoff
4
Microorganism Testing Shows Low Detections in Raw Water Tarrant Regional Water District monitors the raw water at all intake sites for Cryptosporidium, Giardia Lamblia and viruses. The source is human and animal fecal waste in the watershed. The 2017 sampling showed low level detections of Giardia Lamblia, which is common in surface water. Cryptosporidium and viruses were not detected in any of the samples. The table below indicates when detections were found in each raw water source. Intake location
Viruses are treated through disinfection processes. Cryptosporidium and Giardia Lamblia are removed through disinfection and/or filtration.
Giardia Lamblia
Cryptosporidium
Adenovirus
Enterovirus
Not detected
Not detected
Not detected
Not detected
March
Not detected
Not detected
Not detected
May
Not detected
Not detected
Not detected
Eagle Mountain Lake
January
Not detected
Not detected
Not detected
Lake Worth
January
Not detected
Not detected
Not detected
January, February, April, May, June
Not detected
Not detected
Not detected
Richland-Chambers Reservoir Cedar Creek Lake Lake Benbrook
Clearfork of Trinity River
You may be more vulnerable than the general population to certain microbial contaminants, such as Cryptosporidium, in drinking water. Infants, some elderly, or immuno-compromised persons such as 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 your 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.
5
Lead and Copper Testing If present, elevated levels of lead can lead to 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 private plumbing. The City of Southlake is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. If you haven’t turned on any faucets in several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to two minutes before using the water for drinking or cooking. Never use hot water from the tap for cooking or preparing infant formula. Measure
Action Level
90th Percentile
# Sites Over Action Level
MCLG
Violation
Common Source of Substance
Copper
ppm
1.3
0.70
0
1.3
No
Erosion of natural deposits; leaching from wood preservatives; corrosion of household plumbing systems
Lead
ppb
15
2.6
0
0
No
Corrosion of household plumbing systems; erosion of natural deposits
Contaminant
If you are concerned about lead in your water, you may request 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 1-800-426-4791 or at www.epa.gov/safewater/lead.
6
Unregulated Disinfection By-products Tested in 2017 Unregulated contaminants are those for which the EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist the EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted. Because these contaminants are not regulated there is not a Maximum Contaminant Level or Maximum Contaminant Level Goal. Measure
MRDL
MRDLG
Your Water
Range of Detects
Chloral Hydrate
ppb
Not regulated
0
0.70
0.18 to 0.70
Bromoform
ppb
Not regulated
0
5.83
1.19 to 5.83
Bromodichloromethane
ppb
Not regulated
0
7.81
3.37 to 7.81
Chloroform
ppb
Not regulated
0.07
7.96
2.58 to 7.96
Dibromochloromethane
ppb
Not regulated
0.06
8.51
4.33 to 8.51
Dibromoacetic Acid
ppb
Not regulated
N/A
15.3
11.9 to 15.3
Dichloroacetic Acid
ppb
Not regulated
0
8.60
4.70 to 8.60
Monobromoacetic Acid
ppb
Not regulated
N/A
3.10
1.60 to 3.10
Monochloroacetic Acid
ppb
Not regulated
0.07
0
0
Trichloroacetic Acid
ppb
Not regulated
0.02
1.60
0 to 1.60
Contaminant
Common Source of Substance By-product of drinking water disinfection
By-product of drinking water disinfection; not regulated individually; included in Total Trihalomethanes
By-product of drinking water disinfection; not regulated individually; included in Haloacetic Acids
7
Funny Taste or Smell?
Item
Measure
Your Water
Occasionally, water suppliers experience episodes of unpleasant odors and tastes in the water, often characterized as “earthy” or “musty.” These taste and odor variations are caused by naturally-occurring algae growth in one source of your drinking water, such as Eagle Mountain Lake. The compounds that cause this particular taste and smell do not pose any health risks.
Bicarbonate
ppm
108 to 144
Calcium
ppm
37.4 to 50.6
Chloride
ppm
11.6 to 36.1
µmhos/ cm
299 to 456
Other constituents, which are often found in drinking water, can also cause taste, color, and odor. These secondary constituents are not causes for health concern. We report information about these secondary constituents to help you in making a determination about the taste, odor and appearance of your water.
pH
units
7.8 to 8.6
Magnesium
ppm
2.69 to 7.78
Sodium
ppm
9.57 to 25.9
Sulfate
ppm
24.8 to 34.4
Total Alkalinity as CaCo3
ppm
108 to 145
Total Dissolved Solids
ppm
116 to 255
Total Hardness as CaCo3
ppm
113 to 157
Total Hardness in Grains
grains/ gallon
7 to 9
Conductivity
8
Southlake’s Water Source The City of Southlake gets all of its water from the City of Fort Worth’s Water Department. Fort Worth obtains water from surface water sources: Lake Worth, Eagle Mountain Lake, Lake Bridgeport, Richland Chambers Reservoir, Cedar Creek Reservoir, and the Clear Fork Trinity River (from Lake Benbrook). Fort Worth owns Lake Worth. The U.S. Army Corps of Engineers is responsible for Lake Benbrook. The other four lakes are owned and operated by Tarrant Regional Water District (TRWD).
TCEQ Assesses Raw Water Supplies The Texas Commission on Environmental Quality (TCEQ) completed an assessment of Fort Worth’s, and subsequently, Southlake’s source waters. TCEQ classified the risk to our source waters as high for most contaminants. High susceptibility means there are activities near the source water watershed that make it very likely chemical constituents may come into contact with the source water. It does not mean there are any health risks present. TRWD, from which the Southlake ultimately purchases its water, received assessment reports.
For more information on source water assessments and protections efforts at our system contact Southlake Water Utilities at 817-748-8082. Further details about the source water assessments are available at www.tceq.texas.gov/gis/swaview.
Further details about sources and source water assessments are available through the Texas Commission on Environmental Quality at www.tceq.texas.gov/drinkingwater.
9
Water Loss, as Reported to the Texas Water Development Board Every year the City of Southlake is required to report water loss to the Texas Water Development Board (TWDB). This is nonmetered water used in fire hydrant protection, water line flushing for health and safety, and other activities. Water loss also includes water lost to leaks, line breaks, and other uncontrollable flow. We reported a loss of approximately 6.79% of all water brought into the City of Southlake in 2017. One of the most important tools in accurately measuring water loss and ensuring accurate utility billing is the water meters throughout the City. The large production meters that measure the incoming water purchased from the City of Fort Worth are tested and calibrated at least once per year. The Southlake Water Utilities’ goal is to conform to the American Water Works Association (AWWA) meter accuracy standard of 98.5% to 101.5%.
Trinity River Authority of Texas Tarrant Water Supply Project From April 24th to April 25th, 2017, Fort Worth used the interconnection with the Trinity River Authority of Texas – Tarrant Water Supply Project to supply water to the Centrepoint portion of the Fort Worth distribution system while repairs were made. To obtain the TRA-TCWSP water quality data, please contact Southlake Water Utilities at 817-748-8082.
10
Stormwater Quality: What’s That in the Water?
Next time you drive by a creek or pond, take a look at the water. Is it clear, or does it look like one of these pictures? The City of Southlake has a stormwater management program meant to keep surface water clean, but we need the help of residents to spot problem areas. We also need you to do your part at home as well – pick up after your pets, don’t blow your leaves down the storm drain, and make sure to drain your pool properly. Visit www.cityofsouthlake.com/environmentalservices to learn more about this.
If you see something in the water that looks like it shouldn’t be there, give our Public Works Department a call at (817) 748-8082.
11
Put down some roots Have you seen us around town? We’ve traveled to schools to showcase our erosion control display, hosted landscaping workshops, participated in a plant sale, and coordinated many other outreach initiatives. We would love to be a part of your next event – whether you want us to host a booth, give a presentation, help with a workshop, or anything else you have in mind. Just give us a call at (817) 748-8082!
12
Protect Your Pipes Shown below, the Wastewater division is videoing a sewer line to determine the cause of a blockage in a nearby restaurant. The offender? Grease!
There is nothing worse than having your sewer or septic system back up into your home. Protect your pipes at all costs! While most people know by now that grease shouldn’t go down the drain, other common household items are still being flushed into the sewer system. This wastewater travels to a treatment plant at Trinity River Authority, where polluted water becomes costly and difficult to treat. Some of these common offenders include “flushable” wipes, cotton swabs, medicine, paint, paper towels, and floss. Our Wastewater Division has even found toys in our sanitary sewer system!
13
Not sure where to drop off your medicines, paint, pesticides, cleaning products, or cooking oil? Visit www.defendyourdrainsnorthtexas.org to find drop off locations and other useful resources about properly disposing of items. The City of Southlake also partners with the Fort Worth Environmental Collections Center to help you manage household hazardous waste. Call (817) 392-1234 to learn more about how you can take advantage of this program.
14
Conservation
Water Smart, Southlake Know your
Watering schedule Mon Tue Wed Thu
EVEN
Fri
Sat
Sun
As that Texas summer heat hits Southlake, don’t forget to follow your watering schedule! Residents, businesses, and Homeowners Associations must only water on their designated days and between the hours of 6:00pm and 10:00am. Most lawns actually only need two deep waterings a week to thrive.
Addresses
ODD
Addresses
COMMERCIAL Addresses
Not sure if your sprinkler system is operating correctly? Sign up for a free W.I.S.E. Guys evaluation at www.cityofsouthlake.com/wiseguys today. If you are looking for more ways to conserve water, also consider signing up for an EyeOnWater account as advertised in the beginning of this report.
14 15
Let’s Talk about it The information in this report represents a high-level review of our City’s water. For additional information please contact the City of Southlake Public Works Department at 817-748-8082.
To participate in decisions concerning water you may attend City of Southlake Council meetings. Please call 817-748-8183 or visit www.cityofsouthlake.com for more information regarding meeting times and dates.
Additional copies of the Water Quality Report are available in the Public Works Department offices at Town Hall, located at 1400 Main Street or at Public Works Operations, located at 1950 E. Continental Blvd.
If you have any questions concerning the CCR, please call the Drinking Water Quality Team at 512-239-4691 or email PWSCCR@tceq.texas.gov. When you contact the TCEQ please make sure that you reference the City of Southlake, ID #2200075.
˜ En Espanol
Give Us a Call
Este informe incluye información importante sobre el agua potable. Si tiene preguntas o comentarios sobre éste informe en español, por favor de llamar al tel. 817-748-8082 para hablar con una persona bilingüe en español.
Customer Service
Visit us online at: www.cityofsouthlake.com
817-748-8051
New Service/Billing Questions/Meter Leaks
Operations
Water Quality Inquiries/Main Breaks/ Sewer Concerns/Environmental Concerns
817-748-8082
16
PRESORTED STANDARD US POSTAGE PAID SOUTHLAKE, TX
1950 E Continental Blvd Southlake, TX 76092
PERMIT 55 ERCWSS
POSTAL PATRON