THE CITY OF BASTROP IS COMMITTED TO COMPLIANCE WITH THE AMERICANS WITH DISABILITIES ACT. REASONABLE MODIFICATIONS AND EQUAL ACCESS TO COMMUNICATIONS WILL BE PROVIDED UPON REQUEST. PLEASE CALL 512-321-2124.
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| Water Quality Table for 2007 |
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.
The tables below contain all of the federally regulated or monitored constituents which have been found in your drinking water. U. S. EPA requires water systems to test up to 97 contaminants.
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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)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 and microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG) – The level of 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.
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.
Inorganic Contaminants Year (Range) Contaminant Average Level Minimum Level Maximum Level MCL MCLG Unit of Measure Source of Contaminant 2005Barium 0.128 0.118 0.138 2 2 ppm Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits.
2006-2005 Flouride 0.8 0.8 0.8 4 4 ppm Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
2007 Nitrate 1.7 1.51 1.88 10 10 ppm Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
2002
Gross beta emitters
3.6 3.3 3.9 50 0 pCi/L Decay of natural and man-made deposits.
2002
Gross alpha 0.9 0 1.8 15 0 pCi/L Erosion of natural deposits.
Maximum Residual Disinfectant LevelYear Contaminant Average
LevelMinimum Level Maximum
LevelMRDL MCLG Units Source of Contaminant 2007 Chlorine Residual, Free 1.11 .46 2.2 4 <4 ppm Disinfectant used to control microbes.
Organic Contaminants: Testing Waived, Not Reported, or None Detected.
Turbidity: Not Required.
Total Coliform: Reported Monthly Tests Found NO COLIFORM BACTERIA
Fecal Coliform: Reported Monthly Tests Found NO FECAL COLIFORM BACTERIA.
Disinfection Byproducts Year Contaminant Average Level Minimum Level Maximum Level MCL Unit of Measure Source of Contaminant 2007 Total Haloacetic Acids 18.0 12.3 23.4 60 ppb Byproduct of drinking water disinfection.
2007Total Trihalomethanes 59.7 42.3 88.2 80 ppb Byproduct of drinking water disinfection.
Unregulated Initial Distribution System Evaluation For Disinfection Byproducts
WAIVED OR NOT YET SAMPLEDUnregulated Contaminants
NOT REPORTED OR NONE DETECTED
Lead and Copper Year (Range) Contaminant The 90th Percentile Number of Sites
Exceeding Action LevelAction
LevelUnit of Measure Source of Contaminant
2007
Lead 4.2 1 15 ppb Corrosion of household plumbing systems; erosion of natural deposits.
2007
Copper 1.94 1 1.3 ppm Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservations.
2007 Copper 1.94 2 1.3 ppm Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservations.
ViolationsViolation Type Health Effects Duration Explanations Steps to Correct N/A N/A N/A N/A N/A 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.
Secondary and Other Not Regulated Constituents (No associated adverse health effects) Year (Range) Constituents Average Level Minimum Level Maximum Level Limit Unit of Measure Source of Constituents 2006 -
2005Bicarbonate 289 251 326 NA ppm Corrosion of carbonate rocks such as limestone.
2005 Calcium 91.3 89.6 93 NA ppm Abundant naturally occurring element.
2006 - 2005 Chloride 42 38 46 300 ppm Abundant naturally occurring element; used in water purification; byproduct of oil field activity.
2005 Copper 0.068 0.021 0.116 1 ppm Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives.
2005 Magnesium 19.6 18.1 21 NA ppm Abundant naturally occurring element.
2005 Manganese 0.0153 0 0.0305 .05 ppb Abundant naturally occurring element.
2005 Nickel 0.002 0.001 0.002 NA ppm Erosion of natural deposits.
2006-
2005pH 7.1 7.1 7.1 7 units Measure of corrosivity of water.
2005 Sodium 26 24 27 NA ppm Erosion of natural deposits; byproduct of oil field activity.
2006-
2005Sulfate 42 40 44 300 ppm Naturally occurring; common industrial byproduct; byproduct of oil field activity.
2006-
2005Total Alkalinity
as CaCO3
237 206 267 NA ppm Naturally occurring soluble mineral salts.
2006
2005Total Dissolved Solids 383 356 409 1000 ppm Total dissolved mineral constituents in water.
2005 Total Hardness
as CaCO3
308 298 318 NA ppm Naturally occurring calcium.
2005 Zinc 0.003 0 0.006 5 ppb Moderately abundant naturally occurring element; used in the metal industry.
THE CITY OF BASTROP IS COMMITTED TO COMPLIANCE WITH THE AMERICANS WITH DISABILITIES ACT. REASONABLE MODIFICATIONS AND EQUAL ACCESS TO COMMUNICATIONS WILL BE PROVIDED UPON REQUEST. PLEASE CALL 512-321-2124.
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