Town of Wausau 2010 Annual Drinking Water Quality Report

Download 2010 Annual Drinking Water Quality
Report (PDF file)
We
are pleased to report that our drinking water meets
all federal and state requirements.
We're pleased to present to you this year's Annual
Water Quality Report. This report is designed to
inform you about the quality 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 source is ground water from one (1)
well. The well draws from the Floridan Aquifer.
Because of the excellent quality of our water, the
only treatment required is chlorine for disinfection
purposes.
In
2009 the Florida Department of Environmental
Protection performed a Source Water Assessment on
our system. The assessment was conducted to provide
information about any potential sources of
contamination in the vicinity of our well. There are
four (4) potential sources of contamination
identified for this system with a moderate
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 Margaret Riley, Town
Clerk 850-638-1781.
If
you have any questions about this report or
concerning your water utility, please contact
Margaret Riley, Town Clerk at 850-638-1781. 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
meetings. They are held on the second Thursday of
each month 6:00 p.m. at the Wausau Town Hall 1607
Second Avenue, Wausau FL 32463
The Town of Wausau 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, 2010. Data
obtained before January 1, 2010, and presented in
this report are from the most recent testing done in
accordance with the laws, rules, and regulations.
In
the table below, you may find unfamiliar terms and
abbreviations. To help you better understand these
terms we've provided the following definitions:
Maximum Contaminant Level or MCL: 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 or MCLG: 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.
Action Level (AL): The concentration of a
contaminant which, if exceeded, triggers treatment
or other requirements that a water system must
follow.
Initial Distribution System Evaluation (IDSE): An
important part of the Stage 2 Disinfection
Byproducts Rule (DBPR). The IDSE is a one-time study
conducted by water systems to identify distribution
system locations with high concentrations of
trihalomethanes (THMs) and haloacetic acids (HAAs).
Water systems will use results from the IDSE, in
conjunction with their Stage 1 DBPR compliance
monitoring data, to select compliance monitoring
locations for the Stage 2 DBPR.
Maximum residual disinfectant level or 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 or 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.
“ND”: means not detected and indicates that the
substance was not found by laboratory analysis.
Parts per billion (ppb) or Micrograms per liter
(µg/l): one part by weight of analyte to 1 billion
parts by weight of the water sample.
Parts per million (ppm) or Milligrams per liter
(mg/l) : one part by weight of analyte to 1 million
parts by weight of the water sample.
Picocurie per liter (pCi/L) : measure of the
radioactivity in water.
2010 CONTAMINANTS TABLE
|
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 |
|
Inorganic
Contaminants |
|
Barium (ppm)
|
Aug 09
|
N
|
0.015
|
NA
|
2
|
2
|
Discharge
of drilling wastes; discharge from metal
refineries; erosion of natural deposits
|
|
Nitrate
(as Nitrogen) (ppm) |
Aug 10
|
N
|
0.12
|
NA
|
10
|
10
|
Runoff
from fertilizer use; leaching from septic
tanks, sewage; erosion of natural deposits
|
|
Selenium
(ppb) |
Aug 09
|
N
|
5
|
NA
|
50
|
50
|
Discharge
from petroleum and metal refineries; erosion
of natural deposits; discharge from mines
|
|
Sodium (ppm)
|
Aug 09
|
N
|
5
|
NA
|
NA
|
160
|
Salt
water intrusion, leaching from soil
|
|
Stage 1
Disinfectants and Disinfection By-Products
|
|
Disinfectant or Contaminant and Unit of
Measurement |
Dates of
sampling (mo./yr.) |
MCL or
MRDL Violation Y/N |
Level
Detected |
Range of
Results |
MCLG or
MRDLG |
MCL or
MRDL |
Likely
Source of Contamination |
|
Chlorine
(ppm) |
Jan-Dec
10 |
N
|
0.85
|
0.7-1.2
|
MRDLG = 4
|
MRDL =
4.0 |
Water
additive used to control microbes
|
|
Haloacetic Acids (five) (HAA5) (ppb)
|
Aug 09
|
N
|
2
|
NA
|
NA
|
MCL = 60
|
By-product of drinking water disinfection
|
|
Contaminant and Unit of Measurement
|
Dates of
sampling (mo./yr.) |
AL
Exceeded
(Y/N)
|
90th
Percentile Result |
No. of
sampling sites exceeding the AL |
MCLG
|
AL
(Action Level) |
Likely
Source of Contamination |
|
Lead and
Copper (Tap Water) |
|
Copper
(tap water) (ppm) |
Jun-Sep
08 |
N
|
0.145
|
0 of 5
|
1.3
|
1.3
|
Corrosion
of household plumbing systems; erosion of
natural deposits; leaching from wood
preservatives |
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 Town of Wausau
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 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:
(A) Microbial contaminants, such as viruses and
bacteria, which may come from sewage treatment
plants, septic systems, agricultural livestock
operations, and wildlife.
(B) 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.
(C) Pesticides and herbicides, which may come from a
variety of sources such as agriculture, urban
stormwater runoff, and residential uses.
(D) 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.
(E) 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, 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.
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.
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.
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).
“We at the Town of Wausau work around the clock to
provide top quality water to every tap,” said Mayor
Roger Hagan. 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.