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Consumer - 2004- Confidence Report
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TERM: JANUARY 1 THROUGH DECEMBER 31, 2003
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Water System Name: Brooktrails Township CSD - System 23-009 | Report Date: 5/6/04
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We test the drinking water quality for many constituents as required by State and Federal Regulations.
This report shows the results of our monitoring for the period of January 1 - December 31, 2003.
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Type of water source(s) in use: Surface Water
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Name & location of source(s): Lake Ada Rose, Lake Emly, Primrose Dr. |
Drinking Water Source Assessment information:
Completed 7/03. Summary of water's vulnerability to contamination based on the assessment. Vulnerability of Brooktrails Township surface water is low. |
Time and place of regularly scheduled Board meetings for public participation: 2nd & 4th Tuesdays of most months, 7:00 pm, Brooktrails Community Center. Website: www.btcsd.org |
For more information, contact
Brooktrails District Office
Phone: (707 )459-2494
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TERMS USED IN THIS REPORT:
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| Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water. |
Public Health Goal (PHG): The level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency. |
| Primary Drinking Water Standards (PDWS): MCLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements. |
Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the U.S. Environmental Protection Agency (USEPA). |
| Secondary Drinking Water Standards (SDWS): MCLs for contaminants that affect taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not affect the health at the MCL levels. |
Treatment Technique (TT): A required process intended to reduce the level of a contaminant in drinking water. |
ND: not detectable at testing limit
ppm: parts per million or milligrams per liter (mg/L)
ppb: parts per billion or micrograms per liter (ug/L)
ppt: parts per trillion or nanograms per liter (ng/L)
pCi/L: picocuries per liter (a measure of radiation)
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Regulatory Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. |
| Variances and Exemptions: Department permission to exceed an MCL or not comply with a treatment technique under certain conditions. |
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-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
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Contaminants that may be present in source water include:
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- Microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
- Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining , or farming.
- Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
- Organic chemical contaminants, including synthetic and volatile organic chemicals, that are byproducts of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
- Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.
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In order to ensure that tap water is safe to drink, USEPA and the state Department of Health Services (Department) prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. Department regulations also establish limits for contaminants in bottled water that must provide the same protection for public health.
Tables 1, 2, 3, 4, and 5 list all of the drinking water contaminants that were detected during the most recent sampling for the constituent. The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk. The Department requires us to monitor for certain contaminants less than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year. Some of the data, though representative of the water quality, are more than one year old.
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| Table 1 - sampling results showing the detection of coliform bacteria |
Microbiological Contaminants
(to be completed only if there was a detection of bacteria ) |
Highest No. of detections |
No. of months in violation |
MCL |
MCLG |
Typical Source of Bacteria |
| Total Coliform Bacteria |
(In a mo.)
0 |
None |
More than 1 sample in a month with a detection |
0 |
Naturally present in the environment |
| Fecal Coliform or E. coli |
(In the year)
0 |
None |
A routine sample and a repeat sample detect total coliform and either sample also detects fecal coliform or E. coli |
0 |
Human and animal fecal waste |
| Table 2 - sampling results showing the detection of Lead and copper |
| Lead and Copper (to be completed only if there was a detection of lead or copper in the last sample set) |
No. of samples collected |
90th percentile level detected |
No. Sites
exceeding AL |
AL |
MCLG |
Typical Source of Contaminant |
| Lead (ppb) |
20 |
0.0069 mg/I |
0 |
15 |
2 |
Internal corrosion of household water plumbing systems; discharges from industrial manufacturers; erosion of natural deposits. |
| Copper (ppm) |
20 |
0.041 mg/I |
0 |
1.3 |
0.17 |
Internal corrosion of household water plumbing systems; erosion of natural deposits; leaching from wood preservatives. |
| Table 3 - sampling results for sodium and hardness |
Chemical or Constituent
(and reporting units) |
Sample Date |
Level Detected |
Range of Detections |
MCL |
PHG (MCLG) |
Typical Source of Contaminant |
| Sodium (ppm) |
6/4/03 |
4.6 mg/l |
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None |
None |
Generally found in ground and surface water |
| Hardness (ppm) |
6/4/03 |
28 mg/l |
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None |
None |
Substances that form ions when in water; seawater influence |
*Any violation of an MCL or AL is asterisked.
| Table 4 - detection of contaminants with a Primary Drinking Water Standard |
Chemical or Constituent
(and reporting units) |
Sample Date |
Level Detected |
Range of Detections |
MCL |
PHG (MCLG) |
Typical Source of Contaminant |
| Aluminum |
6/4/03 |
0.59 mg/l |
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1000 mg/l |
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Erosion of natural deposits; residual from some surface water treatment processes |
| Barium |
6/4/03 |
0.020 mg/l |
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1 mg/l |
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| Table 5 – detection of contaminants with a Secondary Drinking Water Standard |
Chemical or Constituent
(and reporting units) |
Sample Date |
Level Detected |
Range of Detections |
MCL |
PHG (MCLG) |
Typical Source of Contaminant |
| Calcium |
6/4/03 |
7.0 mg/l |
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None |
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Leaching from natural deposits |
| Iron * |
6/4/03 |
450 ug/l |
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300 ug/l |
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Leaching of natural deposits |
| Magnesium |
6/4/03 |
2.6 mg/l |
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None |
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Leaching from natural deposits |
| Total Alkalinity |
6/4/03 |
33 ppm |
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None |
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| Chloride |
6/4/03 |
2.8 mg/l |
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500 mg/l |
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Runoff/leaching from natural deposits; seawater influence |
| Sulfate |
6/4/03 |
1.2 mg/l |
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500 mg/l |
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Naturally-occurring organic materials |
| Bicarbonate |
6/4/03 |
30 ppm |
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None |
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Additional General Information On Drinking Water
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All 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 the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the USEPA’s Safe Drinking Water Hotline (1-800-426-4791).
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. USEPA/Centers for Disease Control (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 (1-800-426-4791).
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Summary Information for Contaminants Exceeding an MCL or AL,
or a Violation of any Treatment or Monitoring and Reporting Requirements
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Iron exceed MCL in the raw water . After treatment Brooktrails Water Plant meets the MCL in our finished water
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| Table 7 - sampling results showing TREATMENT OF SURFACE WATER SOURCES |
Treatment Technique *
(Type of approved filtration technology used)
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Turbidity Performance Standards **
(that must be met through the water treatment process) |
Turbidity of the filtered water must:
1 - Be less than or equal to 0.5 NTU in 95% of measurements in a month.
2 - Not exceed 1.0 NTU for more than eight consecutive hours.
3 - Not exceed 5.0 NTU at any time. |
Lowest monthly percentage of samples that met Turbidity Performance Standard No. 1.
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100% |
Highest single turbidity measurement during the year
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.35 |
The number of violations of any surface water treatment requirements
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None |
* A required process intended to reduce the level of a contaminant in drinking water.
** Turbidity (measured in NTU) is a measurement of the cloudiness of water and is a good
indicator of water quality and filtration performance. Turbidity results which meet performance
standards are considered to be in compliance with filtration requirements.
SWS CCR Form -Revised Jan 2002
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