Este informe
contiene informacion muy importante sobre su aqua de beber. Traduzcalo
o hable con alguien que lo entienda bien. (This report contains very
important information about your drinking water. Translate it, or
speak to someone who understands it.)
This Water Quality
Report includes monitoring data results from 2008 detailing the quality
of water we furnished to you, our customers.
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.
The source for all our water is surface water taken from the Allegheny
River with an intake upstream of the Hulton Bridge.
Contaminants
that may be present in source water include:
- Microbial
contaminants, such as viruses and bacteria, which may come from
sewage treatment plants, septic systems, agricultural livestock
operations, and wildlife.
- Inorganic
contaminants, such as salts and metals, which can be naturally occurring
or result from urban storm water 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 storm water runoff, and residential uses.
- Organic chemical
contaminants, including synthetic and volatile organic chemicals,
which are byproducts of industrial processes and petroleum production,
and can also come from gas stations, urban storm water runoff, and
septic systems.
- Radioactive
contaminants, which can be naturally occurring or be the result
of oil and gas production and mining activities.
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. EPA/CDC guidelines regarding 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).
The task of the
Authority is to remove these contaminants or reduce them to levels
that meet or are better than all health standards established by Federal
and State regulators.
The Authority
routinely monitors for constituents in your drinking water according
to federal and state laws. The table shows the results of our monitoring
for the period of January 1st to December 31st, 2008. Drinking water,
including bottled water, may reasonably be expected to contain at
least small amounts of some constituents. The presence of these constituents
does not necessarily indicate that water poses a health risk.
In order to ensure
that tap water is safe to drink, the U.S. Environmental Protection
Agency (EPA) prescribes regulations which limit the amount of certain
contaminants in water provided by public water systems. Food and Drug
Administration regulations establish limits for contaminants in bottled
water which must provide the same protection for public health.
Lead in drinking
water is primary from materials and components associated with service
lines and home plumbing. If present, elevated levels of lead can cause
serious health problems, especially for pregnant women and young children.
Oakmont Water Authority is responsible for providing high quality
drinking water, but it 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.
For more information
regarding contaminants and potential health effects, contact the EPA
Safe Drinking Water Hotline (800-426-4791 or the EPA website http://www.epa.gov/safewater/hfacts.htm).
Since 2002,
the Authority has maintained the prestigious Director's Award status
under the Partnership for Safe Water Program. The award honors water
utilities for achieving operational excellence by voluntarily optimizing
treatment plant performance and adopting more stringent performance
goals than what is required by federal and state drinking water standards.
A Source Water
Assessment of the Allegheny River intake which supplies water to the
Hulton Purification Plant was completed by the DEP and Allegheny County
Health Department (ACHD) in 2002. The report contains information
of potential sources of contamination which include waste water treatment
plants, storm water run off, accidental industrial discharges, and
transportation spills related to railroad, highway and barge traffic.
The most serious source of contamination would be a release from a
ruptured petroleum pipeline. A detailed report of the Assessment is
available for review at the ACHD office (412-578-8047).
In 2003, the
Authority introduced Chloramines to the treatment process as a primary
disinfectant to reduce the formation of Trihalomethanes. Chloramine
disinfection is utilized in the late spring and summer months. Chloramines
must be removed from water prior to dialysis treatment and from water
used in aquariums and fish ponds. Chloramines are removed by use of
a high-quality granular-activated carbon filter or dechlorinating
agent.
In May 2004 we
took an extra step in protecting the health of our customers by adding
an Ultraviolet Disinfection System to our treatment process.
UV Disinfection
is used for inactivating chlorine-resistant pathogens: such as cryptosporidium
and giardia.
You will notice
after looking through this table of testing results that we had no
violations in 2008.
If you have any
questions concerning this report, please contact our Laboratory Manager
at (412) 828-3388. Our regularly scheduled meetings of the Board of
Governors are held on the third Monday of each month, 7:00 p.m., at
721 Allegheny Avenue, Oakmont.
2
0 0 8 T E S T R E S U L T S
|
Microbiological Contaminants
|
MCL
|
MCLG
|
Highest # or % of Positive
Samples
|
Violation
Y/N
|
Typical Sources of
Contamination
|
|
Total Coliform Bacteria
|
For systems that collect <
40 samples/month:
1 positive monthly sample
For systems that collect >
40 samples/month:
5% of monthly samples
are positive
|
0
|
0
|
N
|
Naturally
present in the environment
|
|
Contaminant
|
MCL
|
MCLG
|
Level Detected
|
Sample Date
|
Violation of TT Y/N
|
Source of Contamination
|
|
Turbidity*
|
TT=1 NTU for a single measurement
|
0
|
0.5
|
01/24/08
|
N
|
Soil runoff
|
|
TT=at least 95%
of monthly samples < 0.3 NTU
|
100%
|
|
N
|
|
Lead and Copper Rule
|
|
Contaminant
|
Action Level
(AL)
|
MCLG
|
90th Percentile Value
|
Units
|
# of Sites Above AL of
Total Sites
|
Violation of TT
Y/N
|
Sources of Contamination
|
|
Lead*
|
15
|
0
|
2
|
ppb
|
0 out of 30
|
N
|
Corrosion of household plumbing.
|
|
Copper*
|
1.3
|
1.3
|
.03
|
ppm
|
0 out of 30
|
N
|
Corrosion of household plumbing.
|
|
Inorganic Chemical
|
|
Contaminant
|
MCL in CCR units
|
MCLG
|
Level Detected
|
Range of Detection
|
Units
|
Sample Date
|
Violation Y/N
|
Source of Contamination
|
|
Fluoride*
|
2*
|
4
|
1.06
|
0.8 - 1.2
|
ppm
|
05/2004
|
N
|
Water Additive which promotes
strong teeth.
|
|
Nitrate
|
10
|
10
|
.50
|
N/A
|
ppm
|
11/2008
|
N
|
Runoff from fertilizer use
leaching from septic tanks, sewage; erosion of natural deposits
|
|
Barium
|
2
|
2
|
.02
|
N/A
|
ppm
|
05/2004
|
N
|
Discharge of drilling wastes;
Discharge from metal refineries; Erosion of natural deposits
|
|
Disinfection By-Products
|
|
Contaminant
|
MCL in CCR units
|
MCLG
|
Level Detected
|
Range of Detections
|
Units
|
Sample Date
|
Violation Y/N
|
Sources of Contamination
|
|
Haloacetic Acid (HAA)
|
60
|
N/A
|
22
|
9 - 35
|
ppb
|
N/A
|
N
|
By-product of drinking water
disinfection
|
|
Total Trihalomethanes
|
80
|
N/A
|
64
|
34 - 100
|
ppb
|
N/A
|
N
|
By-product of drinking water
disinfection
|
|
Disinfectant Residuals
|
|
Contaminant
|
MCL in CCR units
|
MCLG
|
Entry Point Lowest Level
|
Entry Point Range
|
Distribution Highest Monthly Avg.
|
Distribution Highest Monthly Avg.
|
Units
|
Violation Y/N
|
Sources of Contamination
|
|
Chlorine
|
4
|
4
|
.45
|
.45 - 1.94
|
.93
|
.45 - .93
|
ppm
|
N
|
Water additive used to control
microbes
|
|
Chloramines
|
4
|
4
|
.54
|
.54 - 2.31
|
2.20
|
1.34-2.20
|
ppm
|
N
|
Water additive used to control
microbes
|
|
By-product Precursors, / Total Organic Carbon
|
|
Range Removal Required
|
Range Removal Achieved
|
Quarters Out of Compliance
|
Violation Y/N
|
|
|
35%
|
35 - 46%
|
0
|
N
|
Naturally present in the environment
|
Footnotes: * EPA's MCL for Fluoride
is 4 ppm, however, Pennsylvania has set a lower MCL to better protect
human health.
                  *Lead & Coper sample period 6/2007 - 9/2007. We had no
detrection levels of total coliform bacteria, volatile organics,
synthetic organics, or radiologicals. Turbidity is a measurement
of the cloudiness of the water. We monitor it because it is a good
indicator of the effectiveness of our filtration system. Special regulatory testing is currently being done on disinfection by-products Total Trihalomethane and Haloacid acid. The range for TTHM was 35-115.1 ppb and HAA was 1.6-35.5 ppb.
DEFINITIONS AND ABBREVIATIONS::
Action Level (AL) -- The concentration of
a contaminant which, if exceeded, triggers treatment or other requirements
which a water system must follow.
Maximum Contaminant Level (MCL) -- The highest
level of a contaminant that is allowed 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 risk to health. MCLGs allow for a margin of safety.
Maximum Residual Disinfectant Level (MRDL) --
The highest level of a disinfectant allowed in drinking water. There
is convincing evidence that addition of a disinfectant is necessary
for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG) --
The level of a 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.
N/A -- Not applicable.
Nephelometric Turbidity Unit (NTU) -- A measure
of the clarity of water and indicator of filter performance. Turbidity
in excess of 5 NTU is just noticeable to the average person.
ppb -- Parts per billion or micrograms per
liter (ug/L)
ppm -- Parts per million or milligrams per
liter (mg/L)
Treatment Technique (TT) -- A required process
intended to reduce the level of contaminant in drinking water.