City of Davenport, FL Gateway to the Ridge

1 Allapaha Street
Davenport, FL.  33836
Phone: (863) 419-3300

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        Davenport 2007 water quality report


 

2007 Annual Drinking Water Quality Report

City of Davenport

 

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.

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).

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

 

 

** Results in the Level Detected column for radiological and inorganic contaminants are from the highest detected level at any sampling point.

 

 

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

 

 

  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

 

 

Sodium (ppm)

1/05 – 12/05

N

6.36

n/a

n/a

150

Salt water intrusion, leaching from soil

 

 

  TTHMs and Stage 1 Disinfectant/Disinfection By-Product (D/DBP) Contaminants

 

 

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

 

                                         

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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Last modified: 07/25/06