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Water System Name: |
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Report Date: |
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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 -
Este informe
contiene información muy importante sobre su agua beber.
Tradúzcalo ó hable con
alguien que lo entienda bien.
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Type of water source(s) in use: |
GROUNDWATER WELL |
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Name & location of source(s): |
WELL IS LOCATED APPROX. ¼ MILE EAST OF |
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IN THE HANDEL-BEDOLLA VINEYARD – |
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Drinking Water Source Assessment information: |
SOURCE WATER ASSESMENT INFORMATION (DWSAP) |
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ON FILE – COPY BY REQUEST TO BOARD OF DIRECTORS – COPY VIEWED
ON - www.palominolakes.org |
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Time and place of regularly scheduled board
meetings for public participation: |
PLMWC Board of |
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Directors meeting schedule posted on
www.palominolakes.org |
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For more
information, contact |
LEE E. TOLBERT
- tolbert@flash.netdex.com |
Phone: |
(707) 894-4582 |
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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. Primary Drinking Water Standards (PDWS): MCLs for contaminants
that affect health along with their monitoring and reporting requirements,
and water treatment requirements. 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. 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) |
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. 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). Treatment Technique
(TT): A required process intended to
reduce the level of a contaminant in drinking water Regulatory Action Level ( Variances and
Exemptions: Department permission to
exceed an MCL or not comply with a treatment technique under certain
conditions. |
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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.
Contaminants that may be
present in source water include:
·
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.
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 |
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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 |
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Total Coliform
Bacteria |
0 |
none |
More than 1 sample in a month with a detection |
0 |
Naturally present in
the environment |
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Fecal Coliform or |
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 |
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Table 2 - sampling results showing
the detection of Lead and copper |
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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 |
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MCLG |
Typical Source of Contaminant |
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Lead (ppb) |
10 |
5
ppb |
0 |
15
ppb |
2
ppb |
Internal
corrosion of household water plumbing systems; discharges from industrial
manufacturers; erosion of natural deposits. |
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Copper (ppm) |
10 |
0.86
ppm |
0 |
1.3
ppm |
0.17
ppm |
Internal
corrosion of household water plumbing systems; erosion of natural deposits;
leaching from wood preservatives. |
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TAble 3 - sampling results for
sodium and hardness |
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Chemical or Constituent |
Sample
Date |
Level Detected |
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MCL |
PHG (MCLG) |
Typical Source of Contaminant |
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Sodium (ppm) |
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23.00
ppm |
9.0
– 23.0 ppm |
none |
none |
Generally
found in ground and surface water |
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Hardness (ppm) |
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360.0
ppm |
190
– 360 ppm |
none |
none |
Generally
found in ground and surface water |
*Any
violation of an MCL or AL is asterisked.
Additional information regarding the violation is provided on the next
page.
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TAble 4 - detection of contaminants
with a Primary Drinking Water Standard |
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Chemical or Constituent |
Sample
Date |
Level Detected |
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MCL |
PHG (MCLG) |
Typical Source of Contaminant |
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Barium (ppm) |
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0.2
ppm |
0.1
– 0.22 ppm |
1
ppm |
2
(N/A) |
Discharge
of oil drilling wastes & from oil refineries; erosion of natural deposits |
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Fluoride (ppm) |
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0.01 |
0.01
– 0.12 ppm |
2
ppm |
1
(N/A) |
Erosion
of natural deposits; water additive which promotes strong teeth discharge
from fertilizer and aluminum factories |
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Asbestos (MFL) |
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<
0.20 MFL |
<0.20
– 0.021 MFL |
7
MFL |
N/A
(7) |
Internal
corrosion of asbestos cement water mains; erosion of natural deposits |
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Nitrite (ppm) |
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<
0.01 ppm |
<
0.01 ppm |
1
ppm |
1
(N/A) |
Runoff
and leaching from fertilizer use; leaching from septic tanks; sewage; erosion
of natural deposits |
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Nitrate (ppm) |
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9.40
ppm |
21.0
– 1.8 ppm |
45
ppm |
45
(N/A) |
Runoff
and leaching from fertilizer use; leaching from septic tanks; sewage; erosion
of natural deposits |
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Gross Alpha
Radioactivity (pCi/L) |
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2.90
pCi/L |
2.9
– 0.08 pCi/L |
15
pCi/L |
N/A
(0) |
Erosion
of natural Deposits |
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Ethylbenzene
(ppb) |
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1.10
ppb |
0.10
– 1.10 ppb |
700
ppb |
300
(N/A) |
Discharge
from petroleum refineries; industrial chemical factories |
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Toluene (ppb) |
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0.73
ppb |
0.1
– 0.73 ppb |
150
ppb |
150
ppb (N/A) |
Discharge
from petroleum and chemical factories; underground gas tank leaks |
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Xylenes
- total (ppm) |
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0.0033
ppm |
0.0001
– 0.0033 ppm |
1.75
ppm |
1.8
ppm (N/A) |
Discharge
from petroleum and chemical factories; fuel solvent |
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Ethylene Dibromide – EDB (ppm) |
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< 0.0020 ppm |
0.0020
ppm |
50,000 ppm |
N/A
(0) |
Discharge
from petroleum refineries; underground gas tank leaks; banned nematocide that still may be present in soils and
leaching from grain & fruit crops |
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TAble 5 - detection of contaminants
with a Secondary Drinking Water Standard |
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Chemical or Constituent |
Sample
Date |
Level Detected |
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MCL |
PHG (MCLG) |
Typical Source of Contaminant |
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Aluminum (ppb) |
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<
50.0 ppb |
50.0
– 100.0 ppb |
200
ppb |
N/A
(N/A) |
Erosion
from natural deposits; residual from some water treatment processes |
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Color (units) |
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3.00
units |
3.0
– 10.0 units |
15
units |
N/A
(N/A) |
Naturally-occurring
organic materials |
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Copper (ppm) |
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<
0.05 ppm |
<
0.05 ppm |
1
ppm |
N/A
(N/A) |
Internal
corrosion of household plumbing systems; erosion of natural deposits;
leaching from wood preservatives |
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Foaming Agents - MBAS (ppb) |
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<
50 ppb |
<
50 ppb |
500
ppb |
N/A
(N/A) |
Municipal
and industrial wastes discharges |
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Iron (ppb) |
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<
100.0 ppb |
<
100.0 ppb |
300
ppb |
N/A
(N/A) |
Leaching
from natural deposits; industrial wastes |
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Manganese (ppb) |
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<
30.0 ppb |
<
20.0 - < 30.0 ppb |
50
ppb |
N/A
(N/A) |
Leaching
from natural deposits |
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Odor (units) |
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<
1 unit |
<
1 unit |
3
Units |
N/A
(N/A) |
Naturally-occurring
organic materials |
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CONTINUED FROM Secondary Drinking
Water Standard |
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Chemical or Constituent |
Sample
Date |
Level Detected |
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MCL |
PHG (MCLG) |
Typical Source of Contaminant |
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Silver (ppb) |
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<
10.0ppb |
<10.0
ppb |
100
ppb |
N/A
(N/A) |
Industrial
discharges |
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Specific Conductance (micromhos) |
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710
micromhos |
430
– 710 micromhos |
1600
micromhos |
N/A
(N/A) |
Substances
that form ions when in water; sea water influence |
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Sulfate (ppm) |
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33.0
ppm |
14
– 33 ppm |
500
ppm |
N/A
(N/A) |
Runnoff/leaching from
natural deposits; industrial wastes |
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Total Dissolved Solids
– TDS (ppm) |
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390
ppm |
270
– 390 ppm |
1000
ppm |
N/A
(N/A) |
Runnoff/leaching from
natural deposits |
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Turbidity (NTU) |
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0,31
NTU |
0.1
– 0.31 NTU |
5
NTU |
N/A
(N/A) |
Soil
runoff |
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Zinc (ppm) |
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<
0.05 ppm |
<
0.05 ppm |
5.0
ppm |
N/A
(N/A) |
Runnoff/leaching from
natural deposits; industrial wastes |
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TABLE 6 - DETECTION OF UNREGULATED CONTAMINANTS |
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Chemical
or Constituent |
Sample
Date |
Level
Detected |
Action
Level |
Health
Effects Language |
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Boron
(ppb) |
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5300.0
– 50.0 ppb |
1000
ppb |
Some
men who drink water containing boron in excess of the action level over many
years may experience reproductive effects, based on studies in dogs |
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*Any
violation of an MCL or AL is asterisked.
Additional information regarding the violation is provided below.
Additional General
Information On Drinking Water
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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The PLMWC will
continue to analyze and monitor reported chemicals with a primary drinking
water standard at a frequency higher than the DHS required interval because
of the detection of several chemicals which may cause adverse health
conditions. The presence of the chemicals illustrate the need for a new
primary well, |
Summary Information for Contaminants Exceeding an
MCL or
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No analysis parameters
were equal to or exceeded the MCL (maximum contaminant level) of primary
drinking water standards. |