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.

City of Bastrop and city seal.


Water and Wastewater Department


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.
(To print this report, please set your internet browser's page set up options to 'landscape' page orientation.)
Laboratory beakers.

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
2005
Barium 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 Level
Year Contaminant Average
Level
Minimum Level Maximum
Level
MRDL 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.

2007
Total 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 SAMPLED

Unregulated Contaminants
NOT REPORTED OR NONE DETECTED


Lead and Copper
Year (Range) Contaminant The 90th Percentile Number of Sites
Exceeding Action Level
Action
Level
Unit 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.

Violations
Violation 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 -
    2005
Bicarbonate 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-
     2005
pH 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-
     2005
Sulfate 42 40 44 300 ppm

Naturally occurring; common industrial byproduct; byproduct of oil field activity.

2006-
     2005
Total Alkalinity
as CaCO3
237 206 267 NA ppm

Naturally occurring soluble mineral salts.

2006
     2005
Total 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.

City of Bastrop Home | Water and Wastewater Department