The City of Bedford Water
Treatment System routinely monitors for constituents in your drinking water
according to Federal and State laws. The following table shows the results of
our monitoring for detected contaminants for the period of January 1st to December 31st, 2002. We are allowed to monitor for certain regulated contaminants less
often than once a year. Where this is applicable in the table, it will be
noted. All drinking water, including bottled drinking water, may be reasonably
expected to contain at least small amounts of some constituents. It’s
important to remember that the presence of these constituents does not
necessarily pose a health risk.
In the following table you will find many terms and
abbreviations you might not be familiar with. To help you better understand
these terms we’ve provided the following definitions:
Parts per
million (ppm) or Milligrams per liter (mg/l)-one
part per million corresponds to one minute in two years or a single penny in
$10,000.
Parts per
billion (ppb) or Micrograms per liter - one
part per billion corresponds to one minute in 2,000 years, or a single penny in
$10,000,000.
Picocuries
per liter (pCi/L) - picocuries per liter is a
measure of the radioactivity in water.
Nephelometric
Turbidity Unit (NTU) - nephelometric
turbidity unit is a measure of the clarity of water. Turbidity in excess of 5
NTU is just noticeable to the average person.
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 - The “Maximum Allowed”
(MCL) is 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 - The “Goal” (MCLG) is 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.
FACTS & FIGURES
The City of Bedford Water Treatment System is required to
test for over 75 constituents to make sure that the water you drink is safe.
We are pleased to report that for the calendar year 2002, the water delivered
to your homes and businesses complied with all state and federal requirements.
The regulated constituents shown were detected
in our finished drinking water as analyzed between January 1 and December 31, 2002. Finished water is the water that leaves our treatment plant and is
distributed throughout the system.
|
Contaminant
|
Violation
Y/N
|
Level
Detected
|
Range
|
% Meeting
Requirements
|
Unit
Measurement
|
MCL
|
MCLG
|
Likely Source of Contamination
|
|
1. Fluoride
|
N
|
0.94
Average
|
0.67 to 1.23
|
|
ppm
|
4
|
4
|
Erosion of natural deposits,
water additive which promotes strong teeth
|
|
2. Turbidity
|
N
|
0.52
|
0.04 to 0.52
|
100%
|
NTU
|
1.00
|
N/A
|
Soil run off
|
|
3. Copper
Sampled during September, 2002
|
N
|
0.080 90th Percentile, 0 of 20 samples exceeded action
level
|
< 0.050 to 0.191
|
|
ppm
|
AL = 1.3
|
1.3
|
Corrosion of household
plumbing systems; erosion of natural deposits
|
|
Contaminant
|
Violation
Y/N
|
Level
Detected
|
Range
|
% Meeting
Requirements
|
Unit
Measurement
|
MCL
|
MCLG
|
Likely Source of Contamination
|
|
4. Lead Sampled
during September, 2002
|
N
|
< 5 90th Percentile, 0 of 20 samples exceeded action
level
|
< 5 to 15
|
|
ppb
|
AL = 15
|
0
|
Corrosion of household
plumbing systems, erosion of natural deposits
|
|
5. Alpha emitters
pCi / L
Sampled May 2001
|
N
|
0.3
|
|
|
pCi / L
|
15
|
0
|
Erosion of natural deposits
|
|
6.
Combined Radium
pCi / L
Sampled May 2001
|
N
|
0.5
|
|
|
pCi / L
|
5
|
0
|
Erosion of natural deposits
|
|
7.
Total Coliform
Bacteria
Collected June 2002
|
N
|
1 positive sample of 11 samples collected
|
|
|
|
1 positive monthly sample
|
0
|
Naturally present in the
environment
|
|
8.
Haloacetic Acids
(HAA)
August 2002
Voluntary testing performed prior to MCL going
into effect in 2004
|
N
|
34
|
|
|
ppb
|
Not applicable at this time
|
Not applicable at this time
|
By-product of drinking water
disinfection
|
|
9.
TTHMs (Total)
Trihalomethanes
(HAA)
August 2002
Voluntary testing performed prior to MCL going
into effect in 2004
|
N
|
129
|
|
|
ppb
|
Not applicable at this time
|
Not applicable at this time
|
By-product of drinking water
disinfection
|
PHYSICAL
AND MINERAL CHARACTERISTICS
for calendar year 2002
In addition to the required
analysis that is mainly completed by independent labs we also conduct over
4,000 individual operational tests on your water during the year. The following
constituents analyzed in your water on a daily basis are indicators of the
appearance, taste, and mineral content of the drinking water delivered to your
tap.
Constituent
| (with unit of measurement) |
Frequency |
Annual Average |
|
pH, standard units
|
Every 4 hours
|
7.5
|
|
Alkalinity, ppm
|
Every 4 hours
|
19
|
|
Total Hardness, ppm
|
Once per day
|
42
|
|
Calcium Hardness, ppm
|
Once per day
|
38
|
|
CO2, ppm
|
Once per day
|
4
|
|
Iron, ppm
|
Once per day
|
.01
|
|
Manganese, ppm
|
Once per day
|
.01
|
|
Temperature, Celsius
|
Every 4 hours
|
14
|
|
Free Chlorine, ppm
|
Continuous monitor in addition to every 4 hours
|
1.7
|
SPECIAL HEALTH CONCERNS
Infants and young children are
typically more vulnerable to lead in drinking water than the general
population. It is possible that lead levels at your home may be higher than at
other homes in the community as a result of materials used in your home’s
plumbing. If you are concerned about elevated lead levels in your home’s
water, you may wish to have your water tested and flush your tap for 30 seconds
to 2 minutes before using tap water. Additional information is available from
the Safe Drinking Water Hotline (1-800-426-4791).
Lead in drinking water is rarely
the sole cause of lead poisoning, but it can add to a person’s total lead
exposure. All potential sources of lead in the household should be identified
and removed, replaced or reduced.
As you can see by the table, our
system had no violations. We’re proud that your drinking water meets or
exceeds all Federal and State requirements. We have learned through our
monitoring and testing that some constituents have been detected. The EPA has
determine that your water is SAFE at these levels.
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, 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 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, which 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, 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.
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 Environmental
Protection Agency’s Safe Drinking Water Hotline at 1-800-426-4791.
MCL’s are set at very stringent
levels. To understand the possible health effects described for many regulated
constituents, a person would have to drink 2 liters of water every day at the
MCL level for a lifetime to have a one-in-a-million chance of having the
described health effect.
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 on appropriate means to lessen
the risk of infection by cryptosporidium and other microbiological contaminants
are available from the Safe Drinking Water Hotline (800-428-4791).
Thank you for allowing us to
continue providing your family with clean, quality water this year. In order
to maintain a safe and dependable water supply we sometimes need to make
improvements that will benefit all of our customers. These improvements are
sometimes reflected as rate structure adjustments. Thank you for
understanding.
We at the City of Bedford Water
Treatment System work around the clock to provide top quality water to every
tap. We ask that all our customers help us protect our water sources, which
are the heart of our community, our way of life and our children’s future.
Please call our office if you
have questions at 586-7197.
FOR YOUR INFORMATION
How
will I know if there is a problem with my water?
¨
If the amount of any substance
exceeds limits, you would be notified through newspapers, radio, and/or other
means. With notification, you will be instructed on what appropriate actions
you can take to protect your family’s health.
If
I want more information who do I contact?
¨
Water Plant business hours of
operation are 8:00 a.m. - 4:00 p.m. and can be reached at 540-586-7197. You
can call this number for an emergency 24 hours a day. There is always an
operator on duty. Tours of our facility can be scheduled during normal
business hours.
To report leaks and overflows
¨
Call 540-587-6081 24 hours a day.
Customer
Service
¨
Call 540-587-6081 during the hours
of 7:00 a.m. - 4:00 p.m.
Billing
¨
Call 540-587-6047 during the hours
of 8:30 a.m. and 4:30 p.m.
STEPS OF WATER
TREATMENT
1
Coagulation: Alum and other chemicals are added to water to form
tiny sticky particles called “floc” which attract the dirt particles.
2
Flocculation: Slow mixing to allow floc to get larger so it will gain weight and settle quicker.
3
Sedimentation: The heavy particles (floc) settle to the bottom and
clear water moves to filtration.
4
Filtration: The water passes through filters that help to remove
even smaller particles.
5
Disinfection: A small amount of chlorine is added to kill any harmful
bacteria or microorganisms that may be in the water.
6
Storage: Water is pumped to a closed tank or reservoir where it flows through pipes to homes and businesses in the community.
|
|
The Virginia Department of Health, Div. Of Drinking
Water, City of Bedford’s local regulatory agency, has reviewed this Water
Quality Report and given acceptance for content and compliance to standards
set for water quality reports.
|
|