Consumer Confidence Report
Llano County MUD #1
Blue Lake Estates Area
2005 Drinking Water Quality Report
The Safe Drinking Water Act (SDWA) requires that all water utilities issue this annual
"Consumer Confidence" report to customers.
Llano County MUD #1's drinking water surpasses all federal and state drinking-water standards.
Dear Customer: We are pleased to present a summary of the quality of the water provided to you during the past year. This report details the source of our water, what it contains, and the risks our water testing and treatment are designed to prevent. The Texas Commission on Environmental Quality (TCEQ) has assessed our system and has determined the water is safe to drink. The analysis was made by using 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 dinking water. Since our water meets federal standards, there may not be any health-based benefits to purchasing bottled water or need to use filtering 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).
In previous years Llano County MUD #1 was required to mail the annual Consumer Confidence Report (CCR) to each of our bill-paying customers. Starting in 2005, systems serving 500 or fewer people and since we have had no violations, we may simply inform our customers that the CCR is available. This notification was given to all bill-paying customers on the utility bills that went out during June, 2006.
Llano County MUD #1 is committed to providing you with a safe and reliable water supply. Informed consumers are our best allies in maintaining safe drinking water. We encourage public interest and participation in our community's decisions affecting drinking water. Please contact the District office to learn how you can participate. District Board Meetings are held monthly at the District office and the public is always welcome. Please call the office for dates and times.
Overview
On January 6, 2004 the District switched over to chloramines as a disinfectant within the water treatment system. James Miertschin & Associates, Inc., an Environmental Engineering firm and the Texas Commission on Environmental Quality (TCEQ) worked with the District on these improvements to the water treatment plant. TCEQ rule 290.113 required the following compliance: TTHM annual average shall not exceed 80 ppb and HAA5 annual average shall not exceed 60 ppb. The use of chloramines helps maintain a residual disinfectant concentration in the distribution system and reduces the potential for formation of TTHMs within the treatment system. These improvements did not change the capacity of the plant nor any fundamental treatment processes at the water treatment plant. Customers were notified in advance of this change. Since the switch over, the District has received no complaints regarding neither taste nor odor.
On January 18, 2005 Texas Commission on Environmental Quality (TCEQ) conducted the 2005 Annual Comprehensive Compliance Investigation to evaluate compliance with applicable public drinking water requirements. No violations were documented during the investigation.
Water Source
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-occuring 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. Llano County MUD #1 is supplied by surface water from Lake LBJ. The Texas Commission on Environmental Quality (TCEQ) has completed an assessment of our source water and results indicate that some of our sources are susceptible to certain contaminants. The sampling requirements for our water system are based on this susceptibility and previous sample data. Any detection of these contaminants will be found in this Consumer Confidence Report. If we receive or purchase water from another system, their susceptibility is not included in the assessment. For more information on source water assessments and protection efforts at our system contact Betty Brooker. The source water assessment report is available at the District office.
Este reporte incluye informacion importante sobre el agua potable. Si tiene preguntas o comentarios sobre este informe en espanol, favor del llamar al tel. (830)-598-5460 para hablar con una persona bilingue en espanol.
An Explanation of the Water-Quality Data Table
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.
MCL or Maximum Contaminant Level: 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.
MCLG or Maximum Contaminant Level Goal: 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.
MRDL or Maximum Residual Disinfectant Level: 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.
MRDLG or Maximum Residual Disinfectant Level Goal: 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 contamination.
AL or Action Level: The concentration of a contaminant, which, if exceeded, triggers treatment or other requirements, which a water system must follow.
TT or Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water.
ABBREVIATIONS
NNTU = Nephelometric Turbidity Units
MFL = million fibers per liter (a measure of asbestos)
pCi/l = picocuries per liter (a measure of radioactivity)
ppb = parts per billion, or micrograms per liter (µg/l)
ppm = parts per million, or milligrams per liter (mg/l)
ppt = parts per trillion, or nanograms per liter
ppq = parts per quadrillion, or picograms per liter
Water-Quality Data Table
Inorganics
Year Constituent Highest Level Range of MCL MCLG Unit of Source of Constituent
At Sampling Point Detected Levels Measure
2002 Barium 0.062 0.062- 2 2 ppm Discharge of drilling wastes; discharge from
0.062 metal refineries; erosion of natural deposits.
2005 Fluoride 0.15 0.15- 4 4 ppm Erosion of natural deposits; water additive
0.15 which promotes strong teeth; discharge from fertilizer and aluminum factories.
2005 Nitrate 0.37 0.37- 10 10 ppm Runoff from fertilizer use; leaching from
0.37 septic tanks , sewage; erosion of natural deposits.
Organic Contaminants --NOT TESTED OR REPORTED, OR NONE DETECTED
Disinfectant Residuals
Year Constituent Highest Range of Detects MRDL MCLG Units Source of Constituent
Average (low-high)
2005 Chloramines Disinfectant 3.29 2.24- 4 0 ppm Disinfectant used to control microbes.
3.29
Disinfectant Byproducts
Year Constituent Average Range of MCL Units of Source of Constituent Level Detected Levels Measure
2005 Total Haloacetic Acids 19.1 19.1- 60 ppb Byproduct of drinking water disinfection.
19.1
2005 Total Trihaolmethanes 27.8 27.8- 80 ppb Byproduct of drinking water disinfection.
Year Constituent Average of All Range of Units of Source of Constituent Sampling Points Detected Levels Measure
Lead and Copper
Year Constituent The 90th Number of Action Unit of Source of Constituent
Percentile Sites Exceeding Level Measure
Action Level
**2005 Lead 2.000 0 15 ppb Corrosion of household plumbing systems;
erosion of natural deposits.
**2005 Copper 0.081 0 1.3 ppm Corrosion of household plumbing systems;
erosion of natural deposits; leaching from wood.
Turbidity
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.
Year Constituent Highest Single Lowest Monthly Turbidity Units of Source of Constituent
Measurement % of Samples Limits Measure
2005 Turbidity 0.50 99.00 0.3 NTU Soil Runoff.
Total Organic Carbon (TOC)
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 levls of pathogens. Byproducts of disinfection include include trihalomethanes (THMs) and haloacetic acids (HAAs), which are reported on elsewhere in this report.
Year Constituent Low Average High TT MCLG Units of Source of Constituent
2005 Source Water 3.71 4.30 4.80 N/A N/A ppm Naturally present in the environment.
2005 Drinking Water 2.50 3.19 4.02 N/A N/A ppm Naturally present in the environment.
2005 Removal Ratio .65 1.15 2.17 *Removal Ratio 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.
Secondary and Other Not Regulated Constituents
(No associated adverse health effects) 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 effect the appearance and taste of your water.
Year Constituent Average of All Range of Limit Units of Source of Constituent Sampling Points Detected Level Measure
2002 Aluminum 82.000 82.000- 50 PPB Abundant naturally occurring element.
82.000
2005 Bicarbonate 124. 124.000- N/A ppm Corrosion of carbonate rocks such as limestone.
124.000
2002 Calcium 46.300 46.300- N/A ppm Abundant naturally occurring element.
46.300
2005 Chloride 33.00 33.00- 300 ppm Abundant naturally occurring element; used in water
33.00 purification; byproduct of oil field activity.
2002 Copper .030 .030- N/A ppm Corrosion of household plumbing systems; erosion of .030 natural deposits; leaching from wood preservatives.
2005 Hardness as Ca/Mg 183.000 183.000- N/A ppm Naturally occurring calcium and magnesium.
183.000
2002 Iron 0.081 0.081- 0.3 ppm Erosion of natural deposits; iron or steel water delivery 0.081 equipment or facilities.
2002 Magnesium 18.300 18.300- N/A ppm Abundant naturally occurring element.
18.300
2003 pH 7.400 7.400- 7 units Measure of corrosivity of water.
7.400
2002 Sodium 19.000 19.000- N/A ppm Erosion of natural deposits; byproduct of oil field
19.000 activity.
2005 Sulfate 49.000 49.000- 300 ppm Naturally occurring; common industrial byproduct;
49.000 byproduct of oil field activity.
2004 Total Alkalinity as 124.000 124.000- N/A ppm Naturally occurring soluble mineral salts.
CaCO3 124.000
2003 Total Dissolved 273.000 273.000 1000 ppm Total dissolved mineral constituents in water.
Solids 273.000
2002 Total Hardness as 190.000 190.000- N/A ppm Naturally occurring calcium.
CaCO3 190.000
Total Coli form NOT DETECTED
Microbiological Contaminants
In 2005 twelve microbiological samples were taken, one per month, resulting in no microbiological contaminates detected. Test results indicated that 100% of the monthly samples meet the regulatory requirements of 95% of samples testing negative for biological contaminants.
Water-Quality Table Footnotes
**Taken from customer's sink with a minimum eight hours detention time. Five homes were sampled and ranked from highest to lowest with the 90th percentile sample reported.
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 and Prevention (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 (800-426-4791).
Betty Brooker, General Manager, prepared this report. For additional information, contact the Llano County MUD #1 office at 830-598-5460. Water Quality Data for community water systems throughout the United States is available at www.waterdata.com.
BOARD OF DIRECTORS
Jay W. Haris, President
L. D. Stewart, Vice President
Frank R. Southers, Secretary-Treasurer
Ron D. Hewitt, Board Member
Emory Garlick Board Member
Betty L. Brooker, General Manager
Administrative Office:
2900 Blue Lake Drive
Horseshoe Bay, TX 78657
Hours:
Monday - Friday 9 am to 5 pm
830-598-5460
After hours - water/sewer emergencies
830-598-8741
Notice
The Annual
2005 Report of Drinking Water Quality
(Consumer Confidence Report)
is now available for:
Llano County Municipal Utility District #1
You can obtain a copy of this report by calling
Betty Brooker or Sally Schwab
830-598-5460
Copies are available for pickup at the
District Office
located at
2900 Blue Lake Drive, Horseshoe Bay, TX 78657
Aviso!
El informe anual de la calidad del aqua potable
(informe de la confianza de consumidor)
esta disponible ahora para:
Llano County Municipal Utility District #1
Usted puede obtener una copia de este informe llamando nombre:
Betty Brooker or Sally Schwab
830-598-5460
O usted puede
2900 Blue Lake Drive, Horseshoe Bay, TX 78657
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