Page 3 2008 Annual Drinking Water Quality Report
Inorganic Contaminants
|
Year or Range
|
Contaminant
|
Average Level
|
Minimum Level
|
Maximum Level
|
MCL
|
MCLG
|
Unit of Measure
|
Source of Contaminant
|
|
2008
|
Barium
|
0.082
|
0.082
|
0.082
|
2
|
2
|
ppm
|
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits.
|
|
2006
|
Fluoride
|
0.71
|
0.71
|
0.71
|
4
|
4
|
ppm
|
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
|
|
2008
|
Nitrate
|
0.05
|
0.05
|
0.05
|
10
|
10
|
ppm
|
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits.
|
|
2006
|
Combined Radium
226 & 228
|
3.2
|
3.2
|
3.2
|
5
|
0
|
pCi/L
|
Erosion of natural deposits.
|
|
2006
|
Gross beta emitters
|
15.3
|
15.3
|
15.3
|
50
|
0
|
pCi/L
|
Decay of natural and man-made deposits.
|
|
2006
|
Gross alpha
|
9.2
|
9.2
|
9.2
|
15
|
0
|
pCi/L
|
Erosion of natural deposits.
|
Organic Contaminants TESTING WAIVED, NOT REPORTED OR NONE DETECTED
Maximum Residual Disinfectant Level
Systems must complete and submit disinfection data on the Disinfection Level Quarterly Operating Report (DLQOR). On the CCR report, the system must provide disinfectant type, minimum, maximum and average levels.
|
Year
|
Disinfectant
|
Average Level
|
Minimum Level
|
Maximum Level
|
MRDL
|
MRDLG
|
Unit of Measure
|
Source of Chemical
|
|
2008
|
Free chlorine
|
Average Level of CCR
year's quarterly
|
Minimum result
single sample
|
Maximum result
single sample
|
4.0
|
<4.0
|
ppm
|
Disinfectant used to control microbes.
|
Disinfection Byproducts NOT REPORTED OR NONE DETECTED
Unregulated Initial Distribution System Evaluation for Disinfection Byproducts WAIVED OR NOT YET SAMPLED
Unregulated Contaminants NOT REPORTED OR NONE DETECTED
Unregulated Contaminents
|
Year
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
Unit of
Measure
|
Source of Contaminant
|
|
2008
|
Bromodichloromethane
|
0.6
|
0.6
|
0.6
|
ppb
|
Byproduct of drinking water disinfection
|
|
2008
|
Dibromochloromethane
|
0.5
|
0.5
|
0.5
|
ppb
|
Byproduct of drinking water disinfection
|
Lead and Copper
|
Year
|
Contaminant
|
Average
Level
|
Minimum
Level
|
Maximum
Level
|
Unit of
Measure
|
Source of Contaminant
|
|
1999
|
Lead
|
3.5
|
1
|
15
|
ppb
|
Corrosion of household plumbing systems; erosion of natural deposits.
|
|
1999
|
Copper
|
0.112
|
0
|
1.3
|
ppm
|
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives.
|
Recommended Additional Health Information for Lead
All water systems are required by EPA to report the language below starting with the 2009 CCR to be delivered to you by July of 2010. We are providing this information now as a courtesy.
"If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. This water supply is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
2460027 Page 3 2008 Annual Drinking Water Quality Report
  
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High Gabriel Water
Supply Corporation
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Contact Information
P.O. Box 2799
Cedar Park, TX 78630
Office: 512-259-3888
Emergencies: 512-589-7031
Email: billing@texaswater.net
www.highgabrielwsc.com
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