City of Terrell
2012 Report to Consumers on Water Quality
For Period of January 1 to December 31, 2012
 
 

Terrell water is safe to DrinkThe City of Terrell is proud of the fine drinking water it provides. This report is intended to provide you with important information about your drinking water and the efforts made by our water system to provide safe drinking water.

Printable Water Quality Report in pdf format

SPECIAL NOTICE
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 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 at (800) 426-4791.

The bottom line: Is the water safe to drink? Absolutely.

Call us for information about the next opportunity for public participation in decisions about our drinking water. Find out more about the City of Terrell on this website.

En Espanol
Este reporte incluye informacion importante sobre el agua para tomar. Para asistencia en espanol, favor de llamar al telefone (972) 551-6635.


Overview

City of Terrell has superior rated public water OUR DRINKING WATER IS REGULATED

This report is a summary of the quality of the water we provide our customers. The analysis report has been compiled from recent U.S Environmental Protection Agency (EPA) required tests. The information provided in this packet and will help you become more knowledgeable about your drinking water.

YOUR DRINKING WATER IS SAFE

Providing safe and reliable drinking water is the highest priority of our Water Quality Department. Our employees take pride in providing and delivering water to your home or business. It is our duty to inform you of the quality of your water so you can have confidence in the water we deliver.

Source of Drinking Water

The City of Terrell purchases treated water from North Texas Municipal Water District (NTMWD). NTMWD utilizes four reservoirs; Lavon Lake, Lake Jim Chapman, Lake Tawakoni, and Lake Texoma for their raw water supplies. The City of Terrell’s Water Treatment Plant was closed on June 19, 2007.

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 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:
(A) Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and water wildlife.
(B) Inorganic contaminants, such as salts and metals, which can be naturally-occurring or result from urban storm runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
(C) Pesticides and herbicides, which may come from a variety of sources such as agriculture, storm water runoff, and residential uses.
(D) Organic chemical contaminants, including synthetic and volatile organics, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff and septic systems.
(E) Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.

The TCEQ has completed a Source Water Assessment for all drinking water systems that own their sources. 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(s) from which we purchase our water received the assessment report. For more information on source water assesments and protection efforts at our system, contact Dick Boyd at (972) 551-6635.

The report showed a HIGH susceptibility for the following contaminants: Inorganics, regulated and unregulated; Volatile Organic Contaminant, regulated and unregulated; Synthetic Organic Contaminant, regulated and unregulated; Disinfection By-Product, regulated; and Microbial Organism, unregulated.

A Source Water Susceptibly Assessment for your drinking water source(s) is currently being updated by the Texas Commission on Environmental Quality. This information 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 information contained in the assessment allows us to focus source drinking water protection strategies. For more information about your sources of water, please refer to the Source Water Assessment Viewer available at the following URL: http://gis3.tceq.state.tx.us/swav/Controller/index.jsp?wtrsrc=. Further details about sources and source-water assessments are available in Drinking Water Watch at the following URL: http://dww.tceq.state.tx.us/DWW/

ALL drinking water may contain contaminants
In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health. Contaminants may be found in drinking water that may cause taste, color, or odor problems. These types of problems are not necessarily causes for health concerns. For more information on taste, odor, or color of drinking water, contact us at (972) 551-6635.

Secondary Constituents
Many constituents (such as calcium, sodium, or iron) which are often 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 concern. Therefore, secondary constituents are not required to be reported in this document, but they may greatly affect the appearance and taste of your water. For more information on taste, odor, or color of drinking water, please contact us at (972) 551-6635.

What Do The Tables Mean?
The tables show the results of our water-quality analyses. Every regulated contaminant that we detected in the water, even in the most minute traces, is listed here. The table contains the name of each substance, the highest level allowed by regulation (MCL), the ideal goals for public health, the amount detected, the usual sources of such contamination, footnotes explaining our findings, and a key to units of measurement. Definitions of MCL and MCLG are important.

Avg: Regulatory compliance with some MCLs are based on running annual average of monthly samples.

Maximum Contaminant Level or MCL: The highest level of a 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.

Maximum Residual Disinfectant Level Goal or 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.

Maximum Residual Disinfectant Level or 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.

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

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

Key To Table

AL = Action Level
MCL = Maximum Contaminant Level
MCLG = Maximum Contaminant Level Goal
NTU = Nephelometric Turbidity Units
pCi/l = picocuries per liter (a measure of radioactivity)
ppm = parts per million, or milligrams per liter (mg/l)
ppt = parts per trillion, or nanograms per liter
ppb = parts per billion, or micrograms per liter (µg/l)
ppq = parts per quadrillion, or picograms per liter
TT = Treatment Technique
ND = Not Detected at the Reporting Limit

Lead and Copper Results
Lead
Copper
Year Sampled
2010
2010
MCLG
0
1.3
Action Level (AL)
15
1.3
90th Percentile
3.41
0.655
# Sites Over AL
0
0
Units
ppb
ppm
Violation
No
No
Likely Source of Contamination
Corrosion of household plumbing systems; Erosion of natural deposits Erosion of natural deposits
Leaching from wood preservatives; Corrosion of household plumbing systems

LEAD IN DRINKING WATER

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. This Water supply 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/safe water/lead.

 

Disinfectant and Disinfection By-Products
Haloacetic Acids
(HAA5)
Total Trihalomethanes
(TTHM)
Year Sampled
2012
2012
Highest Level Detected
27.8
36.1
Range of Levels Detected
13.4 – 27.8
16.5 – 36.1
MCLG
NA
NA
MCL
60
80
Units
ppb
ppm
Violation
No
No
Likely Source of Contamination
By-product of drinking water disinfection
By-product of drinking water disinfection

 

Inorganic Contaminants
Fluoride
Nitrate (Nitrogen)
Year Sampled
2007
2012
Highest Level Detected
0.16
0.2
Range of Levels Detected
0.16 – 0.16
0.2 – 0.2
MCLG
4
10
MCL
4.0
10
Units
ppb
ppm
Violation
No
No
Likely Source of Contamination
Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories
Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits

 

Turbidity

  Limit
(Treatment Technique)
Level Detected Violation Likely Source of Contamination
Highest single measurement 1 NTU 0.22 NTU No Soil runoff.
Lowest monthly percentage (%) meeting limit 0.3 NTU 100.00% No Soil runoff.
Note: Turbidity has no health effects. However, turbidity can interfere with disinfection and provide a medium for microbial growth. Turbidity may indicate the presence of disease – causing organisms. These organisms include bacteria, viruses, and parasites that can cause symptoms such as nausea, cramps, diarrhea and associated headaches

Total Organic Carbon
Contaminant
Collection
Date
Highest Level
Detected
Range of Levels
Detected
Unit of Measure
Source of Contaminant
Source Water
2012
6.19
5.01-6.19
ppm
Naturally present in environment
Drinking Water
2012
3.39
2.19-3.39
ppm
Naturally present in environment
Removal Ratio
2012
62.4%
39.8%-62.4%
% removal*
N/A


*Removal ratio is the percent of TOC removed by the treatment process divided by the percent of TOC required by TCEQ to be removed.

Note: Total Organic Carbon (TOC) has no health effects. The disinfectant can combine with TOC to form disinfection byproducts. Disinfection is necessary to ensure that water does not have unacceptable levels of pathogens. Byproducts of disinfection include trihalomethanes (THMs) and haloacetic acids (HAA) which are reported elsewhere in this report.


 

Regulated Contaminants

NOTE: Not all sample 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.
Inorganic Contaminants
Collection
Date
Highest Level
Detected
Range of Levels
Detected
MCLG
MCL
Units
Violation
Likely Source of Contamination
Antimony
2012
0.256
0.195-0.256
6
6
ppb
No
Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder; and test addition.
Arsenic
2012
1.1
0.951-1.1
0
10
ppb
No
Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes.
Barium
2012
0.0389
0.0364-0.0389
2
2
ppm
No
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits.
Beryllium
2012
Levels lower
than detect level
0 - 0
4
4
ppb
No
Discharge from metal refineries and coal-burning factories; discharge from electrical, aerospace, and defense industries.
Cadmium
2012
Levels lower
than detect level
0 - 0
5
5
ppb
No
Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints.
Chromium
2012
2.55
2.35-2.55
100
100
ppb
No
Discharge from steel and pulp mills; erosion of natural deposits.
Fluoride
2012
0.66
0.50-0.66
4
4
ppm
No
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
Mercury
2012
Levels lower
than detect level
0 - 0
2
2
ppb
No
Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland.
Nitrate
(measured as Nitrogen)
2012
1.04
0.08-1.04
10
10
ppm
No
Runoff from fertilizer use; leaching from septic tanks; sewage; erosion of 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.
Selenium
2012
0.244
0.232-0.244
50
50
ppb
No
Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines.
Thallium
2012
Levels lower
than detect level
0 - 0
0.5
2
ppb
No
Discharge from electronics, glass, and leaching from ore-processing sites; drug factories.
Synthetic organic
contaminants including pesticides and herbicides
Collection
Date
Highest Level
Detected
Range of Levels
Detected
MCLG
MCL
Units
Violation
Likely Source of Contamination
2, 4, 5 - TP (Silvex)
2011
Levels lower
than detect level
0 - 0
50
50
ppb
No
Residue of banned herbicide.
2, 4 - D
2011
Levels lower
than detect level
0 - 0
70
70
ppb
No
Runoff from herbicide used on row crops.
Alachlor
2012
Levels lower
than detect level
0 - 0
0
2
ppb
No
Runoff from herbicide used on row crops.
Atrazine
2012
0.71
0 - 0.71
3
3
ppb
No
Runoff from herbicide used on row crops.
Benzo (a) pyrene
2012
Levels lower
than detect level
0 - 0
0
200
ppt
No
Leaching from linings of water storage tanks and distribution lines.
Carbofuran
2011
Levels lower
than detect level
0 - 0
40
40
ppb
No
Leaching of soil fumigant used on rice and alfalfa.
Chlordane
2012
Levels lower
than detect level
0 - 0
0
2
ppb
No
Residue of banned termiticide.
Dalapon
2011
Levels lower
than detect level
0 - 0
200
200
ppb
No
Runoff from herbicide used on rights of way.
Di (2-ethylhexyl) adipate
2012
0.74
0 - 0.74
400
400
ppb
No
Discharge from chemical factories.
Di (2-ethylhexyl) phthalate
2012
Levels lower
than detect level
0 - 0
0
6
ppb
No
Discharge from rubber and chemical factories.
Dibromochloropropane
(DBCP)
2011
Levels lower
than detect level
0 - 0
0
0
ppt
No
Runoff / leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards.
Dinoseb
2011
Levels lower
than detect level
0 - 0
7
7
ppb
No
Runoff from herbicide used on soybeans and vegetables.
Endrin
2012
Levels lower
than detect level
0 - 0
2
2
ppb
No
Residue of banned insecticide.
Ethylene dibromide
2011
Levels lower
than detect level
0 - 0
0
50
ppt
No
Discharge from petroleium refineries.
Heptachlor
2012
Levels lower
than detect level
0 - 0
0
400
ppt
No
Residue of banned termiticide.
Heptachlor epoxide
2012
Levels lower
than detect level
0 - 0
0
200
ppt
No
Breakdown of heptachlor.
Hexachlorobenzene
2012
Levels lower
than detect level
0 - 0
0
1
ppb
No
Discharge from metal refineries and agricultural chemical factories.
Hexachlorocyclopentadiene
2012
Levels lower
than detect level
0 - 0
50
50
ppb
No
Discharge from chemical factories.
Lindane
2012
Levels lower
than detect level
0 - 0
200
200
ppt
No
Runoff / leaching from insecticide used on cattle, lumber, and gardens.
Methoxychlor
2012
Levels lower
than detect level
0 - 0
40
40
ppb
No
Runoff / leaching from insecticide used on fruits, vegetables, alfalfa, and livestock.
Oxamyl [Vydate]
2011
Levels lower
than detect level
0 - 0
200
200
ppb
No
Runoff / leaching from insecticide used on apples, potatoes, and tomatoes.
Pentachlorophenol
2012
Levels lower
than detect level
0 - 0
0
1
ppb
No
Discharge from wood preserving factories.
Simazine
2012
0.38
0.11-0.38
4
4
ppb
No
Herbicide runoff.
Toxaphene
2012
Levels lower
than detect level
0 - 0
0
3
ppb
No
Runoff / leaching from insecticide used on cotton and cattle.
Radioactive Contaminants
Collection
Date
Highest Level
Detected
Range of Levels
Detected
MCLG
MCL
Units
Violation
Likely Source of Contamination
Beta/photon emitters
4/29/2010
4.4
4.4-4.4
0
50
pCi/L
No
Decay of natural and man-made deposits.
Gross alpha excluding
radon and uranium
4/29/2010
Levels lower
than detect level
0 - 0
0
15
pCi/L
No
Erosion of natural deposits.
Volatile Organic
Contaminants
Collection
Date
Highest Level
Detected
Range of Levels
Detected
MCLG
MCL
Units
Violation
Likely Source of Contamination
1, 1, 1 - Trichloroethane
2012
Levels lower
than detect level
0 - 0
200
200
ppb
No
Discharge from metal degreasing sites and other factories.
1, 1, 2 - Trichloroethane
2012
Levels lower
than detect level
0 - 0
3
5
ppb
No
Discharge from industrial chemical factories.
1, 1 - Dichloroethylene
2012
Levels lower
than detect level
0 - 0
7
7
ppb
No
Discharge from industrial chemical factories.
1, 2, 4 - Trichlorobenzene
2012
Levels lower
than detect level
0 - 0
70
70
ppb
No
Discharge from industrial chemical factories.
1, 2 - Dichloroethane
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from industrial chemical factories.
1, 2 - Dichloropropane
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from industrial chemical factories.
Benzene
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from factories; leaching from gas storage tanks and landfills.
Carbon Tetrachloride
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from chemical plants and other industrial activities.
Chlorobenzene
NA
NA
NA
100
100
ppb
No
Discharge from chemical and agricultural chemical factories.
Dichloromethane
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from pharmaceutical and chemical factories.
Ethylbenzene
2012
Levels lower
than detect level
0 - 0
0
700
ppb
No
Discharge from petroleum refineries.
Styrene
2012
Levels lower
than detect level
0 - 0
100
100
ppb
No
Discharge from rubber and plastic factories; leaching from landfills.
Tetrachloroethylene
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from factories and dry cleaners.
Toluene
2012
Levels lower
than detect level
0 - 0
1
1
ppm
No
Discharge from petroleum factories.
Trichloroethylene
2012
Levels lower
than detect level
0 - 0
0
5
ppb
No
Discharge from metal degreasing sites and other factories.
Vinyl Chloride
2012
Levels lower
than detect level
0 - 0
0
2
ppb
No
Leaching from PVC piping; discharge from plastics factories.
Xylenes
2012
Levels lower
than detect level
0 - 0
10
10
ppm
No
Discharge from petroleum factories; discharge from chemical factories.
cis - 1, 2 -
Dichloroethylene
2012
Levels lower
than detect level
0 - 0
70
70
ppb
No
Discharge from industrial chemical factories.
o - Dichlorobenzene
2012
Levels lower
than detect level
0 - 0
600
600
ppb
No
Discharge from industrial chemical factories.
p - Dichlorobenzene
2012
Levels lower
than detect level
0 - 0
75
75
ppb
No
Discharge from industrial chemical factories.
trans - 1, 2 -
Dicholoroethylene
2012
Levels lower
than detect level
0 - 0
100
100
ppb
No
Discharge from industrial chemical factories.

Maximum Residual Disinfectant Level

Disinfectant Type
Year
Average Level
Minimum Level
Maximum
Level
MRDL
MRDLG
Units
Source of Chemical
Chlorine Residual
(Chloramines)
2012
2.73
1.8
3.37
4.0
<4.0
ppm
Disinfectant used to control microbes.
Chlorine Dioxide
2012
0
0
0.1
0.8
0.8
ppm
Disinfectant.
Chlorite
2012
0.42
0.08
0.81
1.0
NA
ppm
Disinfectant.

 

Unregulated Contaminants

Contaminants
Collection
Date
Highest Level
Detected
Range of Levels
Detected
Units
Likely Source of Contamination
Chloroform
2012
26.1
10.3 - 16.6
ppb
By-product of drinking water disinfection.
Bromoform
2012
1
1.0 - 1.0
ppb
By-product of drinking water disinfection.
Bromodichloromethane
2012
12.3
4.3 - 12.3
ppb
By-product of drinking water disinfection.
Dibromochloromethane
2012
5.7
1.9 - 5.7
ppb
By-product of drinking water disinfection.
NOTE: Bromoform, chloroform, dichlorobromomethane, and dibromochloromethane are disinfection by-products. There is no maximum contaminant level for these chemicals at the entry point to distribution.

 

Secondary and Other Constituents Not Regulated

Contaminants
Collection
Date
Highest Level
Detected
Range of Levels
Detected
Units
Likely Source of Contamination
Bicarbonate
2011
120
73 - 120
ppm
Corrosion of carbonate rocks such as limestone.
Calcium
2012
47.5
39.9 -47.5
ppm
Abundant naturally occurring element.
Chloride
2012
26
22.8-26
ppm
Abundant naturally occurring element; used in water purification; by-product of oil field activity.
Hardness as Ca/Mg
2012
133
114-133
ppm
Naturally occurring calcium and magnesium.
Iron
2012
Levels lower than detect level
0.00-0.00
ppm
Erosion of natural deposits; iron or steel water delivery equipment or facilities.
Magnesium
2012
3.54
3.5-3.54
ppm
Abundant naturally occurring element.
Manganese
2012
0.00125
.000525-.00125
ppm
Abundant naturally occurring element.
Nickel
2012
0.00609
.00563-.00609
ppm
Erosion of natural deposits.
pH
2012
8.0
7.7-8.0
units
Measure of corrosivity of water.
Sodium
2012
30.6
27.2-30.6
ppm
Erosion of natural deposits; by-product of oil field activity.
Sulfate
2012
75.7
59.9-75.7
ppm
Naturally occurring; common industrial by-product; by-product of oil field activity.
Total Alkalinity as CaCO3
2012
92
74-92
ppm
Naturally occurring soluble mineral salts.
Total Dissolved Solids
2012
264
229-264
ppm
Total dissolved mineral constituents in water.
Total Hardness as CaCO3
2012
133
114-133
ppm
Naturally occurring calcium.
Zinc
2012
0.00617
.000874-.00617
ppm
Moderately abundant naturally occurring element used in the metal industry.

 

Coliform Bacteria

Maximum Contaminant
Level Goal
Total Coliform Maximum
Contaminant Level
Highest No. of Positive
Fecal Coliform or E. Coli Maximum
Contaminant Level
Total No. of Positive E. Coli or Fecal Coliform Samples
Violation
Likely Source of Contamination
0
0
0
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. Maximum level of 5% Total Coliform.

 

City of Terrell water tower on Poetry Rd.

 

 

 

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City of Terrell
201 East Nash St.
P.O. Box 310

Terrell, Texas 75160
972-551-6600
Metro 972-524-3332
Fax 972-551-6682

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