CRYSTAL
CLEAR WATER SUPPLY CORPORATION
2006
Annual Drinking Water Quality Report
(Consumer Confidence Report)
Phone:
(830) 372 - 1031
PWS # 0940015
Special
Notice for the ELDERLY, INFANTS, CANCER PATIENTS, people with
HIV/AIDS or other immune problems:
Some
people may be more vulnerable to contaminants in drinking water
than the general population. Immuno-compromised 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 health care providers. EPA/Centers for
Disease Control (CDC) guidelines on appropriate means to lessen
the risk of infection by Cryptosporidium and other microbial contaminants
are available from the Safe Drinking Water Hotline (1-800-426-4791).
Public Participation Opportunities
Date: Wednesday, August 1, 2007
Time: 10:00 am
Location: 2370 FM 1979 San Marcos
Phone: (830) 372-1031
To learn about future public meetings (concerning your drinking water), or to request to schedule one, please call us.
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 below. We hope this information helps you become more knowledgeable about what's in your drinking water.
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
reporte incluye informacion importante sobre el agua potable.
Si tiene preguntas o comentarios sobre este informe en espanol,
favor de llarmar al tel. (830) 372-1031 - para hablar con una persona
bilingue en espanol.
Where
do we get our drinking water?
Our
drinking water is obtained from SURFACE AND GROUND water sources.
It comes from the following Lake/River/Reservoir/Aquifer: EDWARDS AND CARRIZO AQUIFERS, GUADELUPE AND SAN MARCOS RIVERS. A Source Water Susceptibility Assessment for your drinking water source(s) is currently being updated ty the Texas Commission on Environmental Quality and will be provided to us this year. The report will describe the susceptibility and types of constituents that may come into contact with your drinking water source based on human activitites and natural conditions. The information contained in the assessment will allow us to focus our source water protection strategies. For more information on source waters assessments and protection efforts at our system, please contact us.
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 (1-800-426-4791).
Secondary Constituents
Many constituents (such as calcium, sodium, or iron) which are often found in drinking water, can cause taste, color or 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 greatly affect the appearance and taste of your water.
About
The Following Pages
The
pages that follow list all of the federally regulated or monitored
constituents which have been found in your drinking water. The U.S.
EPA requires water systems to test up to 97 contaminants.
Definitions
Maximum
Contaminant Level (MCL): The highest
level of a contaminant that is allowed in drinking water. MCL's
are set as close to the MCLG's 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 risk
to health. MCLG's 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 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.
Abbreviations
NTU - Nephelometric Turbidity Units
MFL
- million fibers per liter (a measure of asbestos)
pCi/l - picocuries per liter (a measure
of 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
Inorganic Contaminants
|
Year or
Range
|
Contaminant
|
Average Level
|
Minimum Level
|
Maximum Level
|
MCL |
MCLG
|
Unit
of Measure
|
Source
of Contaminant
|
|
2005
2002
|
Barium
|
0.038
|
0.029
|
0.056
|
2 |
2
|
ppm
|
Disharge
of drilling wastes; discharge from metal refineries; erosion
of natural deposits.
|
|
2005
2002 |
Chromium |
2 |
0 |
3.900 |
100 |
100 |
ppb |
Discharge from steel and pulp mills; erosion of natural deposits. |
|
2006
2005
|
Fluoride
|
0.38
|
0.18
|
1.08
|
4 |
4
|
ppm
|
Erosion
of natural deposits; water additive which promotes strang
teeth; discharge from fertilizer and aluminum factories.
|
|
2006
|
Nitrate
|
1.63
|
0.36
|
2.09
|
10 |
10
|
ppm
|
Runoff
from fertilizer use; leaching from septic tanks, sewage;
erosion of natural deposits.
|
2006
2002 |
Gross
alpha |
0.07
|
0
|
1.5
|
15 |
0
|
pCi/l
|
Erosion
of natural deposits. |
Organic Contaminants
|
Year or
Range |
Contaminant |
Average Level |
Minimum Level |
Maximum Level |
MCL |
MCLG |
Unit of Measure |
Source of Contaminant |
|
2003
2005 |
Xylenes |
0.3 |
0 |
2.23 |
10000 |
10000 |
ppb |
Disharge from petroleum factories:
discharge from chemical factories.
|
Maximum Residual Disinfectant Level
|
Year |
Disinfectant |
Average Level |
Minimum Level |
Maximum Level |
MRDL |
MRDLG |
Unit of Measure |
Source of Disinfectant |
|
2006 |
Chlorine Residual, Free |
1.6 |
0.21 |
3.8 |
4 |
4 |
ppm |
Disinfectant used to control microbes. |
Disinfection Byproducts
|
Year
|
Contaminant
|
Average Level
|
Minimum Level
|
Maximum Level
|
MCL
|
Unit
of Measure
|
Source
of Contaminant
|
|
2006
|
Total
Haloacetic Acids
|
16.3
|
0
|
45
|
60
|
ppb
|
Byproduct of drinking water disinfection.
|
|
2006
|
Total
Trihalomethanes
|
42.4
|
28.2
|
64.4
|
80
|
ppb
|
Byproduct of drinking water disinfection.
|
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
|
|
|
Chloroform |
5.18 |
0 |
17.31 |
ppb |
Byproduct of drinking water disinfection. |
|
2006 2002
|
Bromoform
|
1.06
|
0
|
2.7 |
ppb
|
Byproduct of drinking water disinfection.
|
|
2006
2002
|
Bromodichloromethane
|
4.9
|
0
|
17 |
ppb
|
Byproduct of drinking water disinfection.
|
|
2006
2002
|
Dibromochloromethane
|
4.2
|
0
|
12 |
ppb
|
Byproduct of drinking water disinfection.
|
Lead and Copper
|
Year |
Contaminant |
The 90th Percentile |
Number of Sites Exceeding Action Level |
Action Level |
Unit of Measure |
Source of Contaminant |
| 2003 |
Lead |
4.9 |
0 |
1.5 |
ppb |
Corrosion of household plumbing systems; erosion of natural deposits. |
|
2003 |
Copper |
0.174 |
0 |
1.3 |
ppm |
Corrosion of household plumbing systems; erosion of natural deposits. |
Total Coliform - REPORTED MONTHLY TEST FOUND NO COLIFORM BACTERIA
Fecal Coliform - REPORTED MONTHLY TEST FOUND NO FECAL COLIFORM BACTERIA
Secondary and Other Constituents Not Regulated
(No associated adverse health effects)
|
Year or Range |
Constituent |
Average Level |
Minimum Level |
Maximum Level |
Secondary Limit |
Unit of Measure |
Source of Constituent |
2005
2002 |
Aluminum |
0.028 |
0 |
0.134 |
50 |
ppm |
Abundant naturally occuring element. |
2006
2005 |
Bicarbonate |
254 |
186 |
272 |
NA |
ppm |
Corrosion of carbonate rocks such as limestone. |
2005
2002 |
Calcium |
82 |
60.2 |
91.9 |
NA |
ppm |
Abundant naturally occuring element. |
2006
2005 |
Chloride |
18 |
12 |
30 |
300 |
ppm |
Abundant naturally occuring element; used in water purification; byproduct of oil field activity. |
2005
2002 |
Copper |
0.006 |
0 |
0.03 |
1 |
ppm |
Corrosion of household plumbing systems; erosion of natural wood deposits; leaching from wood preservatives. |
2005
2004 |
Hardness as Ca/Mg |
264 |
205 |
313 |
NA |
ppm |
Naturally occuring calcium and magnesium. |
2005
2002 |
Lead |
0.001 |
0 |
0.001 |
NA |
ppm |
Corrosion of household plumbing systems; erosion of natural deposits. |
2005
2002 |
Magnesium |
16.1 |
13.9 |
17.4 |
NA |
ppm |
Abundant naturally occuring element. |
| 2002 |
Nickel |
0.001 |
0.001 |
0.001 |
NA |
ppm |
Erosion of natural deposits. |
2006
2005 |
pH |
7.7 |
7.5 |
7.9 |
7 |
units |
Measure of corrosivity of water. |
2005
2002 |
Sodium |
11 |
7 |
12 |
NA |
ppm |
Erosion of natural deposits; byproduct of oil field activity. |
2006
2005 |
Sulfate |
24 |
16 |
31 |
300 |
ppm |
Naturally occuring; common industrial byproduct; byproduct of oil field activitiy. |
2006
2005 |
Total Alkalinity as CaCO3 |
238 |
180 |
269 |
NA |
ppm |
Naturally occuring soluble mineral salts. |
2006
2005 |
Total Dissolved Solids |
314 |
249 |
358 |
1000 |
ppm |
Total dissolved mineral constituents in water. |
2005
2003 |
Total Hardness as CaCO3 |
266 |
249 |
298 |
NA |
ppm |
Naturally occuring calcium. |
2005
2002 |
Zinc |
0.008 |
0 |
0.044 |
5 |
ppm |
Moderatly abundant naturally occuring element; used in the metal industry. |
Notice to Customers Regarding Closed Systems
All new meter services are installed with a dual check valve. The dual check valve prevents water from flowing backwards into the water main. This causes owner/members to have a closed system. In the event that an onwner/member does not have a pop off valve on his/her water heater(s), the presence of a closed system could cause danger to the customer. Crystal Clear Water Supply Corporation IS NOT LIABLE for any damages caused at an owner/member's property due to the owner/member's closed system. To find out if you have a closed system contact Crystal Clear at 830-372-1031, or make sure your water heater has this pop off valve in place, either will protect your property.
State law also requires that vacuum breakers be installed on any faucet that a water hose may be attached to. These vacuum breakers are available, at a small cost, at most plumbing supply companies.
EXAMPLE:
Simply leaving a hose, connected to a faucet, submerged in a sink or any other water basin, can create a serious health threat. When the faucet is left running, or when it leaks, a loss in pressure of the supply main can siphon contaminating materials back into the potable water system.
2000 Consumer Confidence Report
2001 Consumer Confidence Report
2002 Consumer Confidence Report
2003 Consumer Confidence Report
2004 Consumer Confidence Report
2005 Consumer Confidence Report
2006 Consumer Confidence Report |
