

We’re very pleased to provide you with this
year's Annual Water Quality Report. We want to keep you informed about the
excellent water and services we have delivered to you over the past year. Our
goal is and always has been, to provide to you a safe and dependable supply of
drinking water. Our water source consists of two wells that draw water from the
Floridian Aquifer. Our water is disinfected with chlorine and delivered to your
home.
If you have any questions about this report or
concerning your water utility, or want to obtain a copy of this report,
please contact our Utilities Department Clerk Susan Pecor at (863)
419-3300. We encourage our valued customers to be informed about their water
utility. If you want to learn more, please attend any of our regularly scheduled
city council meetings, which are held on the Second and Fourth Monday of the
month at 7:00 p.m. at #1 South Allapaha Avenue, Davenport, Florida 33836.
The City of Davenport routinely monitors for
contaminants in your drinking water according to Federal and State laws, rules,
and regulations. Except where indicated otherwise, this report is based on the
results of our monitoring for the period of January 1 to December 31,
2007. Data obtained before January 1, 2007, and presented in this report are
from the most recent testing done in accordance with the above mentioned laws,
rules, and regulations.
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:
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
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, which are
by-products 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 or
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 on appropriate means to lessen the risk
of infection by cryptosporidium and other microbiological contaminants
are available from the Safe Drinking Water Hotline (800-426-4791).
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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.
In 2004
the Department of Environmental Protection has performed a Source Water
Assessment on our system. These assessments were conducted to provide
information about any potential sources of contamination in the vicinity of our
wells (or surface water intakes). Potential sources of contamination identified
include underground petroleum storage tanks, dry cleaning facilities and
wastewater treatment plants with low to high susceptibility levels. The
assessment results are available on the FDEP Source Water Assessment and
Protection Program website at
www.dep.state.fl.us/swapp or they
can be obtained from Susan Pecor at (863) 419-3300. “
In order to ensure that tap water is safe to
drink, the EPA prescribes regulations, which limit the amount of certain
contaminants in water provided by public water systems. The Food and Drug
Administration (FDA) regulations establish limits for contaminants in bottled
water, which must provide the same protection for public health.
In the
table below, you may find unfamiliar terms and abbreviations. To help you
better understand these terms we've provided the following definitions:
|
TERM Appearing
in TABLE |
DEFINITION |
|
Action
Level |
AL |
The
concentration of a contaminant which, if exceeded, triggers
treatment or other requirements which a water system must follow |
|
Not
Applicable |
n/a |
Does not
apply. |
|
Parts per
million |
ppm |
or
Milligrams per liter (mg/l)
– one part by weight of analyte to
one million parts by weight of the water sample. |
|
Parts per
billion |
ppb |
or
Micrograms per liter (µg/l)
– one part by weight of analyte to
one billion parts by weight of the water sample. |
|
Picocuries
per liter |
pCi/L |
-
picocuries per liter is a
measure of the radioactivity in water |
|
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 to not reflect the benefits of the
use of disinfectants to control
microbial contaminants. |
|
Maximum
Contaminant Level |
MCL |
The “Maximum
Allowed” 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 |
MCLG |
The “Goal” 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. |
|
|
City of Davenport
2007 Contaminant Data Table
Florida
Water System #
6530431 |
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**
Results in the
Level Detected
column
for radiological and inorganic contaminants
are from
the highest detected level at any sampling point. |
|
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|
Contaminant and
Unit of Measurement |
Dates of sampling (mo./yr.) |
MCL Violation
Y/N |
Level Detected ** |
Range of Results |
MCLG |
MCL |
Likely Source of Contamination |
|
|
|
Radiological Contaminants |
|
|
|
Alpha (pCi/l) |
1/02 - 12/02 |
N |
2 |
n/a |
0 |
5 |
Erosion of natural deposits |
|
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Inorganic Contaminants |
|
|
|
Barium (ppm) |
1/05 – 12/05 |
N |
0.016 |
n/a |
2 |
2 |
Discharge of drilling wastes; discharge from metal refineries;
erosion of natural deposits |
|
|
|
Chromium (ppb) |
1/05 – 12/05 |
N |
4 |
n/a |
100 |
100 |
Discharge from steel and pulp mills; erosion of natural deposits |
|
|
|
Nickel (ppb) |
1/05 – 12/05 |
N |
1 |
n/a |
N/A |
100 |
Pollution from mining and refining operations. Natural
occurrence in soil. |
|
|
|
Nitrate (as Nitrogen) (ppm) |
1/07 – 12/07 |
N |
1 |
0.3
- 1 |
10 |
10 |
Runoff from fertilizer use; leaching from septic tanks, sewage;
erosion of natural deposits |
|
|
|
Selenium (ppb) |
1/05 – 12/05 |
N |
3 |
n/a |
50 |
50 |
Discharge from petroleum and metal refineries; erosion of
natural deposits; discharge from mines |
|
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|
Sodium (ppm) |
1/05 – 12/05 |
N |
6.36 |
n/a |
n/a |
150 |
Salt water intrusion, leaching from soil |
|
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TTHMs and Stage 1 Disinfectant/Disinfection By-Product (D/DBP)
Contaminants |
|
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|
Chlorine:
Level Detected is the 2007 monthly average for residual
Chlorine; Range of Results is the range of 2007 monthly
Chlorine residual level results (lowest to highest) at the
individual sampling sites. HAA5s and TTHMs: Level
Detected is from a single sample. |
|
|
|
Contaminant and Unit of Measurement |
Dates of
Sampling
(mo./yr.) |
MCL
Violation
Y / N |
Level
Detected |
Range of
Results |
MCLG or
MRDLG |
MCL or
MRDL |
Likely
Source of Contamination |
|
|
Chlorine (ppm) |
1/07
-12/07 |
N |
0.5 |
0.4 –
0.7 |
MRDLG:
4 |
MRDL:
4.0 |
Water
additive used to control microbes |
|
|
Haloacetic Acids (five) (HAA5) (ppb) |
7/07 |
N |
34 |
n/a |
n/a |
MCL =
60 |
By-product of drinking water disinfection |
|
|
TTHM
[Total trihalomethanes] (ppb) |
7/07 |
N |
67 |
n/a |
n/a |
MCL =
80 |
By-product of drinking water disinfection |
|
Lead
and Copper (Tap Water) |
|
|
Contaminant and
Unit of Measurement |
Action Level
Violation
Yes / No |
90th
Percentile
Result
|
Number of Sampling Sites
Exceeding the Action Level |
MCLG |
Action Level |
Monitoring Period
Month / Year
|
Likely Source of
Contamination |
|
|
Copper
(tap water) ppm) |
No |
0.381 |
0 |
1.3 |
AL=1.3 |
6/05 –
9/05 |
Corrosion of household plumbing systems; erosion of natural
deposits; leaching from wood preservatives |
|
|
Lead
(tap water) (ppb) |
No |
4.7 |
1 |
0 |
AL=15 |
6/05-9/05 |
Corrosion of household plumbing systems, erosion of natural deposits |
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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.
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