2009 ANNUAL DRINKING WATER QUALITY REPORT
(Consumer Confidence Report)
EAST MEDINA COUNTY SUD
UNIT 1, (1630010)
UNIT 2, (1630020)
UNIT 3, (1630030)
Telephone Number 830-709-3879
The District is composed of three units. These units are noted on a map included with the report. Find the area of your residence and or service and refer to the corresponding report .
We are pleased to report that our drinking water meets or exceeds all Federal (EPA) Drinking Water Requirements.
This report is a summary of the quality of the water we provide our customers. The analysis was made by using the data from the most recent U.S.Environmental Protection Agency (EPA) required tests and is presented in the attached pages. We hope this information helps you become more knowledgeable about what's in your drinking water.
All Drinking Water May Contain Contaminants
When drinking water meets federal standards there may not be any health based benefits to purchasing bottled water or point of use devices. 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 water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the EPA 's Safe Drinking Water Hotline (800-426-4791).
WATER SOURCES
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 before treatment include: microbes, inorganic contaminants, pesticides, herbicides, radioactive contaminants, and organic chemical contaminants.
En Espanol
Este informe incluye informacin importante sobre el agua potable. Si tiene preguantas o comentarios sobre este informe en espanol, favor de llamar al tel. (830) 709-3879 Ext #11 para hablar con una persona bilingue en espanol.
ABOUT THE FOLLOWING PAGES
The pages that follow list all of the federally regulated or monitored contaminants which have been found in your drinking water. The U.S. EPA requires water systems to test up to 97 contaminants. In the following table, you will find many terms and abbreviations you might not be familiar with. To help you better understand these terms we are providing the following definitions:
Maximum Contaminant Level (MCL) - The highest permissible level of a contaminant in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected health risk. MCLGs allow for a margin of safety.
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. MRDLG's do not reflect the benefits of the use of disinfectants to control microbial contamination.
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 which a water system must follow.
Public Participation Opportunities
Date: 3rd Tuesday of each month except in December (there is no meeting)
Time: 7:00 pm
Location: The District Office at
16313 FM 471 South
Devine, Texas 78016
Phone Number: 830-709-3879
To learn about future public meetings (concerning your drinking water), or to requests to schedule one, please call us.
Where Do We Get Our Drinking Water?
Our drinking water is obtained from GROUND water sources. It comes from the following Lake/River/Reservoir Aquifer: EDWARD'S SOUTH BFZ. A Source Water Susceptibility 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 will allow us to focus our source water protection strategies. Some of this source water assemment information will be available later this year on Texas Drinking Water Watch at http://dww.tceq.state.tx.us/DWW/. For more inforamtion on source water assessments and protection efforts at our system, please contact us.
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, secondaries are not required to be reported in this document but they may greatly affect the appearance and taste of your water.
ABBREVIATIONS
NTU-Nephelometric Trubidity Units
MFL-Millon fibers per liter (a measure of asbestos)
pCi/l - Picocuries per liter (a measure of the radioactivity)
ppm-parts per million, or milligrams per liter (mg/L)
ppb-parts per billion, or micrograms per liter (ug/L)
ppt-- parts per trillion, or nanograms per liter
ppq-parts per quadrillion, or picograms per liter
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Please scroll down to get all three unit reports.
UNIT 1 (1630010) Map Color Pale Gray
|
Devine, Natalia, LaCoste, Lytle area. If you are not sure which plant services you, please call the office at (830) 709-3879.
|
UNIT 2 (1630020) Map Color Medium Gray
Hondo, Castroville, Biry, and Dunlay area. If you are not sure which plant services you, please call the office at (830) 709-3879.
|
UNIT 3 (1630030) Map Color Dark Gray
Cattleman's Crossing and Alsatian Heights. If you are not sure which plant services you, please call the office at (830) 709-3879.
|
UNIT 1 (1630010) Map Color Pale Gray
Inorganic Contaminants
Year
(Range)
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
MCL
|
MCLG
|
Unit of
Measure
|
Source of
Contaminant
|
2005
|
Barium
|
0.085
|
0.085
|
0.085
|
2
|
2
|
ppm
|
Discharge of drilling wastes;
discharge from metal refineries;
erosion of natural deposits.
|
2005
|
Chromium
|
3.2
|
3.2
|
3.2
|
100
|
100
|
ppb
|
Discharge from steel and pulp
mills; erosion of natural deposits.
|
2008
|
Fluroide
|
0.28
|
0.28
|
0.28
|
4
|
4
|
ppm
|
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminium factories.
|
2009
|
Nitrate
|
2.15
|
2.15
|
2.15
|
10
|
10
|
ppm
|
Runoff from fertilizer use; leaching from septic tanks, sewage, erosion of natural deposits.
|
2008
|
Gross alpha
|
1.8
|
1.8
|
1.8
|
15
|
0
|
pCi/L
|
Erosion of natural deposits.
|
Organic Contaminants
Year or
Range
|
Contaminant
|
Average
Level
|
Minimium
Level
|
Maximum
Level
|
MCL
|
MCLG
|
Unit of
Measure
|
Source of
Contaminant
|
2009
|
Di(2-ethylhexyl)
phthalate
|
0.61
|
0.61
|
0.61
|
6
|
0
|
ppb
|
Discharge from rubber and
chemical factories.
|
Maximum Residual Disinfectant Level
Year
|
Disinfectant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
MRDL
|
MRDLG
|
Unit of
Measure
|
Source of
Disinfectant
|
2009
|
Chlorine,
Residual Free
|
0.92
|
0.4
|
2.2
|
4.0
|
4.0
|
ppm
|
Disinfectant used to control mircobes.
|
Disinfection Byproducts
Unregulated Initial Distribution System for Disinfection Byproducts WAIVED OR NOT YET SAMPLED
Unregulated Contaminants NOT REPORTED OR NONE DETECTED
Lead & Copper
Required Additional Health Information for Lead
Turbidity Not Required
Total Coliform Reported Monthly Tests Found No Coliform Bacteria.
Fecal Coliform Reported Monthly Tests Found No Fecal Coliform Bacteria.
Secondary and Other Constituents Not Regulated (No associated adverse health effects)
Year
(Range)
|
Constituent
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
Secondary
Limit
|
Unit of
Measure
|
Source of
Constituent
|
2008
|
Bicarbonate
|
198
|
198
|
198
|
NA
|
ppm
|
Corrosion of carbonate rocks such as limestone.
|
2005
|
Calcium
|
64
|
64
|
64
|
NA
|
ppm
|
Abundant naturally occurring element.
|
2008
|
Chloride
|
20
|
20
|
20
|
300
|
ppm
|
Abundant naturally occurrng element; used in water purification; byproduct of oil field activity.
|
2005
|
Copper
|
0.014
|
0.014
|
0.014
|
1
|
ppm
|
Corrosion of household plumbing system; erosion of natural deposits; leaching from wood preservatives.
|
2005
|
Hardness as Ca/Mg
|
224
|
224
|
224
|
NA
|
ppm
|
Naturally occurring calcium and
magnesium.
|
2005
|
Lead
|
0.003
|
0.003
|
0.003
|
NA
|
ppm
|
Corrosion of household plumbing systems; erosion of natural deposits.
|
2005
|
Magnesium
|
15.6
|
15.6
|
15.6
|
NA
|
ppm
|
Abundant naturally occurring element.
|
2005
|
Nickel
|
0.002
|
0.002
|
0.002
|
NA
|
ppm
|
Erosion of natural deposits.
|
2008
|
pH
|
7.7
|
7.7
|
7.7
|
>7.0
|
units
|
Measure of corrosively of water.
|
2005
|
Sodium
|
10
|
10
|
10
|
NA
|
ppm
|
Erosion of natural deposits; byproduct of oil field activity.
|
2008
|
Sulfate
|
14
|
14
|
14
|
300
|
ppm
|
Naturally occurring; common industrial byproduct; byproduct of oil field activity.
|
2008
|
Total Alkalinity as CaCO3
|
198
|
198
|
198
|
NA
|
ppm
|
Naturally occurring soluble mineral salts.
|
2008
|
Total Dissolved Solids
|
264
|
264
|
264
|
1000
|
ppm
|
Total dissolved mineral constituents in water.
|
2005
|
Zinc
|
0.007
|
0.007
|
0.007
|
5
|
ppm
|
Moderatley abundant naturallay occurring element; used in the metal industry.
|
Unit 1 (1630010) Map Color Pale Gray
UNIT 2 (1630020) Map Color Medium Gray
Inorganic Contaminants
Year or
(Range)
|
Contaminant
|
Average Level
|
Minimum
Level
|
Maximum
Level
|
MCL
|
MCLG
|
Unit of
Measure
|
Source of Contaminant
|
2009
|
Barium
|
0.048
|
0.048
|
0.048
|
2
|
2
|
ppm
|
Discharge of drilling wastes; discharge from metal refineeries; erosion of natural deposits.
|
2008
|
Fluroride
|
0.26
|
0.26
|
0.26
|
4
|
4
|
ppm
|
Erosion of natural deposits;
water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
|
2009
|
Nitrate
|
1.96
|
1.96
|
1.96
|
10
|
10
|
ppm
|
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
|
Organic Contaminants TESTING WAIVED, NOT REPORTED, OR NONE DETECTED
Maximum Residual Disinfectant Level
Year
|
Disinfectant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
MRDL
|
MRDLG
|
Unit of
Measure
|
Source of Disinfectant
|
2009
|
Chlorine
Residual Free
|
1.06
|
0.28
|
2.2
|
4.0
|
4.0
|
ppm
|
Disinfectant used to control microbes.
|
Disinfection Byproducts
Year
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
MCL
|
Unit of
Measure
|
Source of Contaminant
|
2007
|
Total
Trihalamethanes
|
4.8
|
4.8
|
4.8
|
80
|
ppb
|
Byproduct of drinking water disinfection.
|
Unregulated Initial Distribution System Evaluation for Disinfection Byproducts WAIVED OR NOT YET SAMPLED
Unregulated Contaminants NOT REPORTED OR NONE DETECTED
Lead & Copper
Year
|
Contaminant
|
The 90th
Percentile
|
Number of Sites
Exceeding Action Level
|
Action
Level
|
Unit of
Measure
|
Source of
Contaminant
|
2008
|
Lead
|
2.6
|
0
|
15
|
ppb
|
Corrosion of household
plumbing systems, erosion of natural deposits.
|
2008
|
Copper
|
0.152
|
0
|
1.3
|
ppm
|
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood
preservatives.
|
Required Additional Health Information for Lead
Turbidity Not Required
Total Coliform Reported Monthly Tests Found No Coliform Bacteria
Fecal Coliform Reported Monthly Tests Found No Fecal Coliform Bacteria
Secondary of Other Constituents Not Regulated (No associated adverse health effects)
Year/
Range
|
Constituent
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
Secondary
Limit
|
Unit of
Measure
|
Source of
Constituent
|
2008
|
Bicarbonate
|
200
|
200
|
200
|
NA
|
ppm
|
Corrosion of carbonate
rocks such as limestone.
|
2009
|
Calcium
|
66.7
|
66.7
|
66.7
|
NA
|
ppm
|
Abundant naturally occurring element.
|
2008
|
Chloride
|
15
|
15
|
15
|
300
|
ppm
|
Abundant naturally element; used in water purification; byproduct of oil field activity.
|
2009
|
Copper
|
0.006
|
0.006
|
0.006
|
1
|
ppm
|
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservativies.
|
2005
|
Hardness as Ca/Mg
|
227
|
227
|
227
|
NA
|
ppm
|
Naturally occurring calcium and magnesium.
|
2009
|
Magnesium
|
15.1
|
15.1
|
15.1
|
NA
|
ppm
|
Abundant naturally occurring element.
|
2009
|
Nickel
|
0.001
|
0.001
|
0.001
|
NA
|
ppm
|
Erosion of natural deposits.
|
2008
|
pH
|
7.9
|
7.9
|
7.9
|
>7.0
|
units
|
Measure of corrosively of water.
|
2009
|
Sodium
|
9
|
9
|
9
|
NA
|
ppm
|
Erosion of natural deposits; byproduct of oil field activity.
|
2008
|
Sulfate
|
15
|
15
|
15
|
300
|
ppm
|
Naturally occurring; common industrial byproducts; byproduct of oil field activity.
|
2008
|
Total Alkalinity
as CaCO3
|
200
|
200
|
200
|
NA
|
ppm
|
Naturally occurring soluble mineral salts.
|
2008
|
Total Dissolved Solids
|
264
|
264
|
264
|
1000
|
ppm
|
Total dissolved mineral constituents in water.
|
2009
|
Total Hardness as CaCO3
|
229
|
229
|
229
|
NA
|
ppm
|
Naturally occurring calcium.
|
2009
|
Zinc
|
0.008
|
0.008.
|
0.008
|
5
|
ppm
|
Moderately abundant naturally occurring element; used in the metal industry.
|
Unit 2 (1630020) Map Color Medium Gray
UNIT 3 (1630030) Map Color Dark Gray
Inorganic Contaminants
Year or
Range
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
MCL
|
MCLG
|
Unit of
Measure
|
Source of
Contaminant
|
2009
|
Fluoride
|
0.21
|
0.21
|
0.21
|
4
|
4
|
ppm
|
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
|
2009
|
Nitrate
|
2.22
|
2.22
|
2.22
|
10
|
10
|
ppm
|
Runoff from fertilizer use; leaching from septic tanks sewage; erosion of natural deposits.
|
Organic Contaminants TESTING WAIVED, NOT REPORTED, OR NONE DETECTED
Maximum Residual Disinfectant Level
Year
|
Disinfectant
|
Average Level
|
Minimum Level
|
Maximum Level
|
MRDL
|
MRDLG
|
Unit of
Measure
|
Source of
Disinfectant
|
2009
|
Chlorine Residual Free
|
1.17
|
0.52
|
2.09
|
4
|
4
|
ppm
|
Disinfectant used to control microbes.
|
Disinfection Byproducts NOT REPORTED OR NONE DETECTED
|
Unregulated Initial Distribution System Evaluation for Distinfection Byproducts WAIVED OR NOT YET SAMPLED
Unregulated Contaminants
Bromoform, chloroform, dichlorobromomethane, and dibromochloromethane are disinfection byproducts. There is no maximum contaminant level for these chemicals at the entry point to distribution.
|
Year or
Range
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
Unit of
Measure
|
Source of Contaminant
|
2009
|
Bromoform
|
0.9
|
0.9
|
0.9
|
ppb
|
Byproduct of drinking water disinfection.
|
2009
|
Dibromochloromethane
|
1.2
|
1.2
|
1.2
|
ppb
|
Byproduct of drinking water disinfection.
|
Lead and Copper TESTING WAIVED, NOT REPORTED, OR NONE DETECTED
Required Additional Health Information for Lead
Turbidity Not Required
Total Coliform Reported Monthly Tests Found No Coliform Bacteria.
|
Fecal Coliform REPORTED MONTHLY TESTS FOUND NO FECAL COLIFORM BACTERIA.
Secondary and Other Constituents Not Regulated (No associated adverse health effects)
Year (Range)
|
Constituent
|
Average Level
|
Minimum Level
|
Maximum
Level
|
Secondary
Limit
|
Unit of
Measure
|
Source of
Constituent
|
2009
|
Bicarbonate
|
249
|
249
|
249
|
NA
|
ppm
|
Corrosion of carbonate rocks such as limestone.
|
2009
|
Chloride
|
25
|
25
|
25
|
300
|
ppm
|
Abundant naturally occurring element; used in water purification; byproduct of oil field activity.
|
2006
|
Hardness as Ca/Mg
|
241
|
241
|
241
|
NA
|
ppm
|
Naturally occurring calcium and magnesium.
|
2009
|
pH
|
7.1
|
7.1
|
7.1
|
>7.0
|
units
|
Measure of corrosively of water.
|
2009
|
Sulfate
|
17
|
17
|
17
|
300
|
ppm
|
Naturally occurring; common industrial byproduct; byproduct of oil field activity.
|
2009
|
Total Alkalinity as
CaCO3
|
204
|
204
|
204
|
NA
|
ppm
|
Naturally occurring soluble mineral salts.
|
2009
|
Total Dissolved
Solids
|
301
|
301
|
301
|
1000
|
ppm
|
Total dissolved mineral constituents in water.
|
Unit 3 (1630030) Map Color Dark Gray
|