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The water we drink

BARKSDALE AIR FORCE BASE, La. --

We are pleased to present to you the Annual Water Quality Report for the year 2015. This report is designed to inform you about the

quality of your water and services we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply

of drinking water. We want you to understand the efforts we make to continually improve the water treatment process and protect

our water resources. We are committed to ensuring the quality of your water.

 

Our water system purchases water as listed below:

 

Buyer Name

Seller Name

BARKSDALE AFB WATER SYSTEM

SHREVEPORT WATER SYSTEM

                    

Barksdale AFB purchases water from the Shreveport Water System (LA1017031). Shreveport gets their water from the Cross Lake

Watershed (area which is drained by streams flowing to the lake) which consists of about 260 square miles of land, roughly 2/3 of

which is located in Caddo Parish and 1/3 of which is located in Harrison County, Texas. Most of the watershed is undeveloped

timberland, but a significant portion is urban or suburban land, within the city limits. During dry periods, Cross Lake is supplemented

with water pumped from Twelve Mile Bayou. Barksdale AFB has a connection to the Bossier City Water System (LA1015004) for a

backup supply of water in case the Shreveport System is undergoing maintenance or emergency situations.

 

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 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 and mining activities.


A Source Water Assessment Plan (SWAP) is now available from our office. This plan is an assessment of a delineated area around our

listed sources through which contaminants, if present, could migrate and reach our source water. It also includes an inventory of potential

sources of contamination within the delineated area, and a determination of the water supply's susceptibility to contamination by the

identified potential sources. According to the Source Water Assessment Plan, our water system had a susceptibility rating of 'LOW'. If you

would like to review the Source Water Assessment Plan, please feel free to contact the Bioenvironmental Office at 318-456-6730.

 

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. We want our valued customers to be informed about their water utility. If you

have any questions about this report, want to attend any scheduled meetings, or simply want to learn more about your drinking water,

please contact Robert M. Cote at 318-456-3522.

 

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking

water is primarily from materials and components associated with service lines and home plumbing. BARKSDALE AFB WATER SYSTEM is

responsible for providing high quality drinking water, but 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.

 

The Louisiana Department of Health and Hospitals - Office of Public Health routinely monitors for constituents in your drinking water

according to Federal and State laws. The tables that follow show the results of our monitoring during the period of January 1st to

December 31st, 2015. 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 water poses a health risk.

 

In the tables below, 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 (ug/L) – 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.

 

Treatment Technique (TT) – an enforceable procedure or level of technological performance which public water systems must follow

to ensure control of a contaminant.

 

Action level (AL) – the concentration of a contaminant that, if exceeded, triggers treatment or other requirements that a water system

must follow.

 

Maximum contaminant level (MCL) – the “Maximum Allowed” MCL is the highest level of a contaminant that is allowed in drinking

water. MCL’s are set as close to the MCLG’s 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 human health. MCLG’s 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 contaminants.

 

Locational Running Annual Average (LRAA) – The average result for samples at a monitoring location during the previous four calendar

quarters

 

During the period covered by this report we had below noted violations of drinking water regulations.

Compliance Period

Analyte

Type

2/1/2015 - 2/28/2015

COLIFORM (TCR)

MCL (TCR), MONTHLY

3/1/2015 - 3/31/2015

COLIFORM (TCR)

MCL (TCR), MONTHLY

10/1/2015 - 10/31/2015

COLIFORM (TCR)

MCL (TCR), MONTHLY

 

Our water system tested a minimum of 15 samples per month in accordance with the TCR for microbiological contaminants. During the

monitoring period covered by this report, we had the following noted detections for microbiological contaminants:   

Microbiological

Result

MCL

MCLG

Typical Source

COLIFORM (TCR)

In the month of March, 5 sample(s) returned as positive

MCL: Systems that Collect Less Than 40 Samples per Month - No more than 1 positive monthly sample

0

Naturally present in the environment

 

In the tables below, we have shown the regulated contaminants that were detected. Chemical Sampling of our drinking water may not be

required on an annual basis; therefore, information provided in this table refers back to the latest year of chemical sampling results.

Regulated Contaminants

Collection Date

Water
System

Highest Value

Range

 

Unit

MCL

MCLG

Typical Source

BARIUM

3/23/2015

SHREVEPORT WATER SYSTEM

0.047

0.047

ppm

2

2

Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits

FLUORIDE

3/23/2015

SHREVEPORT WATER SYSTEM

0.83

0.83

ppm

4

4

Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories

NITRATE-NITRITE

3/23/2015

SHREVEPORT WATER SYSTEM

0.08

0.08

ppm

10

10

Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits

 

Radionuclides

Collection Date

Highest Value

Range

Unit

MCL

MCLG

Typical Source

No Detected Results were Found in the Calendar Year of 2015

 

Lead and Copper

Date

90TH Percentile

Range

Unit

AL

Sites

Over AL

Typical Source

LEAD

2013 - 2015

2 sites over AL

1 - 5

ppb

15

0

Corrosion of household plumbing systems; Erosion of natural deposits

 

Secondary Contaminants

Collection Date

Water
System

Highest Value

Range

Unit

SMCL

ALUMINUM

3/23/2015

SHREVEPORT WATER SYSTEM

0.77

0.77

MG/L

0.05

CHLORIDE

3/23/2015

SHREVEPORT WATER SYSTEM

15.2

15.2

MG/L

250

MANGANESE

3/23/2015

SHREVEPORT WATER SYSTEM

0.0095

0.0095

MG/L

0.05

PH

3/23/2015

SHREVEPORT WATER SYSTEM

9.4

9.4

SU

8.5

SULFATE

3/23/2015

SHREVEPORT WATER SYSTEM

29.4

29.4

MG/L

250


 

Disinfection Byproducts

Sample Point

Period

Highest LRAA

Range

Unit

MCL

MCLG

Typical Source

TOTAL HALOACETIC ACIDS (HAA5)

CHILD DEVELOPMENT CENTER

2015

27

8.91 - 55.2

ppb

60

0

By-product of drinking water disinfection

TOTAL HALOACETIC ACIDS (HAA5)

FUELS

2015

29

8.7 - 51.9

ppb

60

0

By-product of drinking water disinfection

TOTAL HALOACETIC ACIDS (HAA5)

HANGER ONE

2015

29

10.7 - 49.5

ppb

60

0

By-product of drinking water disinfection

TOTAL HALOACETIC ACIDS (HAA5)

OFF LOAD FACILITY

2015

28

11.4 - 49.7

ppb

60

0

By-product of drinking water disinfection

TTHM

CHILD DEVELOPMENT CENTER

2015

51

35 - 70.5

ppb

80

0

By-product of drinking water chlorination

TTHM

FUELS

2015

52

44.3 - 67.77

ppb

80

0

By-product of drinking water chlorination

TTHM

HANGER ONE

2015

51

35.9 - 67.4

ppb

80

0

By-product of drinking water chlorination

TTHM

OFF LOAD FACILITY

2015

57

41.1 - 70.53

ppb

80

0

By-product of drinking water chlorination

 

 

 

 

 

 

 

 

 

Disinfectant

Date

Result

Range

Unit

MRDL

MRDLG

Typical source

CHLORAMINES

2015

2.44

0.6 - 3.99

ppm

4

4

Water additive used to control microbes

 

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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 microbial contaminants are available from the Safe Drinking Water Hotline (800–426–4791).

Additional Required Health Effects Language:

Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially-harmful, bacteria may be present.  Coliforms were found in more samples than allowed and this was a warning of potential problems.

There are no additional required health effects violation notices.

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Thank you for allowing us to continue providing your family with clean, safe, and quality drinking 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.           

Your Barksdale Air Force Base Water Team works around the clock to provide second-to-none quality drinking water to every tap.  We ask that all our customers help us protect and conserve our most precious resources; which is the heart beat of our community, our way of life, and guarantees our children's future.  Please call Mr. Robert M. Cote at 318-456-3522 if you have questions or concerns.