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McAlister Well
Current Watering
Schedule
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WATER QUALITY
DEPARTMENT OF WATER & POWER, CITY OF BIG BEAR LAKE
LAKE WILLIAM WATER SYSTEM
2007
| DWP RANGE |
DWP AVERAGE |
STATE MCL |
PHG (MCLG) |
DATE SAMPLED |
MAJOR SOURCES |
|
| Turbidity | .1-1.1 | 0.6 NTU | 5 | N/S | 2005 | soil runoff |
| Microbiological | ||||||
| Total Coliform Bacteria | 0 | 0 | 2/month | (0) | 2007 | naturally present in the environment |
| Inorganic Chemicals (samples every 3 years) | ||||||
| Fluoride | ND-2.8 | 1.3 ppm | 2 | 1 | 2005 | erosion of natural deposits |
| Nitrate
(as NO3) (sample every year) |
15-26 | 20.5 ppm | 45 | 45 | 2007 | runoff and leaching from fertilizer use, leaching from septic tanks and sewers |
| Iron | ND-230 | 77 ppb | 300 | 300 | 2005 | N/A |
| Bicarbonate (HCO3) | 160-190 | 177 ppm | 2005 | N/A | ||
| Radioactivity (sampled every 4 years) | ||||||
| Gross Alpha Activity | ND-7.9 | 2.85 pci/l | 15 | (0) | 2007 | erosion of natural deposits |
| Uranium | ND-5.8 | 2.95 pci/l | 20 | (0) | 2007 | erosion of natural deposits |
| Secondary Standards (sampled every 3 years) | ||||||
| Odor-Threshold | 1-1 | 1 unit | 3 | N/S | 2005 | naturally-occurring organic materials |
| Chloride | 15-36 | 24 ppm | 500 | N/S | 2005 | naturally-occurring organic materials |
| Sulfate | 9.7-18 | 14.9 | 500 | N/S | 2005 | naturally-occurring organic materials |
| Total Dissolved Solids | 190 | 190 ppm | 500 | N/S | 2005 | naturally-occurring organic materials |
| Additional Constituents (sampled every 3 years) | ||||||
| PH | 6.8-7.0 | 6.9 units | N/S | N/S | 2005 | N/A |
| Hardness (CaCO3) | 110-180 | 146 ppm | N/S | N/S | 2005 | N/A |
| Sodium | 21-30 | 25 | N/S | N/S | 2005 | N/A |
| Calcium | 32-42 | 38 | N/S | N/S | 2005 | N/A |
| Potassium | 1.8-5.0 | 2.9 | N/S | N/S | 2005 | N/A |
| Magnesium | 7.2-19 | 13.1 | N/S | N/S | 2005 | N/A |
Gross Alpha Activity Certain minerals are radioactive and may emit a form of radiation. Some people who drink water containing alpha emitters in excess of the MCL over many years, may have an increased risk of getting cancer. |
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| Lead and Copper Rule (sampled inside the homes of five customers) | ||||||
| Lead | ND-.0075 | 0.0006 | AL=.015ppm | 0.002 | 2007 | internal corrosion of household water plumbing systems, discharges from industrial manufacturers, and erosion of natural deposits. |
| Lead: 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 & home plumbing.
The DWP 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, & steps you can
take to minimize exposure is available from the Safe
Drinking Water Hotline or at http://www.epa.gov/safewater/lead. |
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| Copper | .180-2.100 | .994 ppm | AL=1.3 ppm | 0.17 | 2007 | internal corrosion of household water plumbing systems, erosion of natural deposits, and leaching from wood preservatives. |
|
Copper is an essential nutrient, but some people who drink water containing copper in excess of the action level over a relatively short amount of time, may experience gastrointestinal distress. Some people who drink water containing copper in excess of the action level over many years, may suffer liver or kidney damage. People with Wilson's Disease should consult their personal physician. A source water assessment was conducted for the domestic water wells of the Department of Water, City of Big Bear Lake's Lake Willliam's water system in March 2002. A copy of the complete assessment may be viewed at Environmental Health Services, 385 N. Arrowhead Ave., 2nd Flr., San Bernardino, CA 92415-0160. You may request a summary of the assessment to be sent to you by contacting Mike Farrell, Environmental Health Specialist (909) 387-4666. Excel/G/WaterQualityReports/WaterQualityReportLakeWilliam2007Pg3 |
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