Dunlap

Water

System

watricon.gif (462 bytes)Water Quality Report watricon.gif (462 bytes)
for 2008

The Dunlap Water System is pleased to present you with our annual water quality report. The report is designed to raise awareness of where our water comes from, understand treatment processes, and educate on source water protection.  This will allow you, the consumer to make informed decisions about your drinking water. More information can be obtained from Philip Roberson at 949.3121 or E.P.A.'s Safe Drinking Water Hotline at 1.800.426.4791

Links:      watricon.gif (462 bytes)

American Water Works Association..... www.awwa.org
Environmental Protection Agency..... www.epa.gov
Tennessee Department of Environment & Conservation... www.state.tn.us/environment
National Rural Water Association..... www.nrwa.org


Where Does Our Water Come From?watricon.gif (462 bytes)

The source water used for the Dunlap Water System is the Sequatchie River.
The origins of the Sequatchie River begins in the Grassy Cove Community
in Cumberland County. The river flows down the heart of the Sequatchie Valley where we draw out our water east of Dunlap off Old York Highway.

rivermap1a.GIF (18152 bytes)

Source Water Assessmentwatricon.gif (462 bytes)

The Tennessee Department of Environment and Conservation has prepared a Source Water Assessment Program Report for untreated water sources. The report assesses the susceptibility of untreated water sources  to potential contamination. To ensure safe drinking water, all public water systems treat and routinely test their water. Water sources have been rated as reasonably susceptible based on geological factors and human activities in the vicinity of the water source. Our rating is moderately susceptible. An explanation of the Tennessee Source Water Assessment Program, the Source Water Assessment summaries, susceptible scorings and the overall TDEC report to EPA can be viewed at http://tennessee.gov/environment/dws/dwassess.shtml or you may contact the water system to obtain copies of specific assessments. 

For Your Informationwatricon.gif (462 bytes)

The TVA estimated 7 day, 10 year minimum flow on the Sequatchie River at our intake is 10.7 million gallons per day.


To find daily flows on the Sequatchie River at Old York Highway:
http://waterdata.usgs.gov/tn/nwis/uv?03570835


To find daily flows on the Sequatchie River:
http://lakeinfo.tva.gov/htbin/streaminfo

Public Participationwatricon.gif (462 bytes)

The Dunlap Water System conducts monthly business during regular City Commission Meetings which are scheduled the 1st Thursday of each month at 6:00pm.

line8.gif (1177 bytes)
line19.gif (393 bytes)

The Dunlap Water 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 the period of January 1st to December 1st, 2008 unless otherwise posted. 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.

line8.gif (1177 bytes)

line19.gif (393 bytes)

Lead..

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. The Dunlap 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 Bottom Line......
watricon.gif (462 bytes)

The Dunlap Water System water quality meets and exceeds State and Environmental Protection Agency standards.

 

Test Results

Contaminant

MCL in CCR Units

MCL
in CCR
Units

Level found in CCR
 Units

Range
of
 Detections

Violations
Y / N

Date
of
Sample

Typical Source of Contamination

 

Total Coliform Bacteria

0 >1 positive sample 0 0 No 2008

Naturally present in the environment

Turbidity

n/a TT
(95%<0.5)
NTU
0.25
Highest
0.03 - 0.25 No 2008


Soil Runoff

Copper*

1.3 Al=1.3
ppm
90th % =
0.09 ppm
  No 2008 Corrosion of household plumbing systems, erosion of natural deposits; leaching form wood preservatives

Lead*

0 Al=15
ppb
90th % =
3 ppb
  No 2008 Corrosion of household plumbing systems; erosion of natural deposits

Sodium

n/a n/a 1.83 ppm   No 2008 Discharge from petroleum and metal refineries; Erosion of natural deposits; Discharge from mines

Fluoride

4 ppm 4 ppm 1.10 ppm
avg.
.91 - 1.28 No 2008

Water additive for strong teeth, erosion of natural deposits

TTHM's
Trihalomethanes

0 80 ppb 49 ppb
avg.
31- 70 No 2008

Disinfection By-Products

Halo Acedic
Acids

0 60 ppb 40 ppb
avg.
31 - 50 No 2008 Disinfection By-Products
** Total Organic
Carbon ( TOC)
TT TT .93 ppm
avg.
.90 - 1.0 No 2008 Naturally present in the environment

Chlorine

4 ppm 4 ppm 1.89 ppm
avg.
1.5 - 2.2 No 2008 Added Disinfectant

Nitrate
(as Nitrogen)

0 100 .77 ppm n/a No 2008 Runoff from fertilizer use, leaching from septic tanks, sewage, erosion of natural deposits

We met the treatment technique for turbidity with 100% of the monthly samples below the turbidity limit of 0.3 NTU. We monitor turbidity, we monitor turbidity, which is a measurement of the cloudiness of water, because it is a good indicator the filtration system is functioning well.

* 0 out of 20 site sampled had a level exceeding the lead and copper action level.

** The treatment technique for total carbon was met at 100% in 2008

Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous system, and may have an increased risk of getting cancer.

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 million corresponds to one minute in 2,000 years, or a single penny in $ 10,000,000.

Picouries Per Liter (pCi/L)
 
  Picouries per liter is a measurement of the radioactivity in water.

Nephelometric Turbidity Unit (NTU)
   
Nephelometric turbidity unit is a measurement of 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.

Treatment Technique (TT) - (mandatory language)
 
  A treatment technique is a required process intended to reduce the level of a contaminant in drinking water.

Maximum Contaminant Level - (mandatory language)
   
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 - (mandatory language)
   
The "Goal" (MCGL) is the level of a contaminant in drinking water below which there is no known or expected
risk to health. MCGLs allow for a margin of safety.

BDL -
Below Detection Limit

n/a -
Not Applicable