2010 Water Quality Report - Frederick County Sanitation Authority

Water Hardness
Water
Hardness
provided by the Sanitation Authority is hard at an average of 297 ppm or 17.35 grains
The water
(1grain = 17.118 ppm) and can be expected to cause calcium buildup and glassware spotting. This is an
The water provided by the Sanitation Authority is hard at an average of 297 ppm or 17.35 grains
aesthetic problem, but it has no harmful health effects. Water hardness is not regulated by the Virginia
(1grain =
Department
of17.118
Health ppm)
(VDH).and can be expected to cause calcium buildup and glassware spotting. This is an
aesthetic problem, but it has no harmful health effects. Water hardness is not regulated by the Virginia
Department of Health (VDH).
Water Conservation Message…
Water
Conservation
Message…
rainfall during
2010 was
The region’s
average. The Authority recommends all customers
conserve water, especially during the hottest periods of the summer when demands are the greatest.
The region’s rainfall during 2010 was average. The Authority recommends all customers
Should conditions become serious, voluntary conservation measures will be implemented and in the
conserve
water,
especially the
during
the hottest
periods
of impose
the summer
when demands
are the greatest.
event of a water
emergency,
Sanitation
Authority
will
mandatory
water restrictions
as
Should
conditions
become
serious,
voluntary
conservation
measures
will
be
implemented
and in the
outlined in the Authority’s Water Conservation policy. For more information or a copy of the policy,
event 540-868-1061,
of a water emergency,
Sanitation
Authority will impose mandatory water restrictions as
telephone
or visit ourthe
website
at www.fcsa-water.com.
outlined in the Authority’s Water Conservation policy. For more information or a copy of the policy,
telephone 540-868-1061, or visit our website at www.fcsa-water.com.
Lead and Copper
Lead
and Copper
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
If present, elevated levels of lead can cause serious health problems, especially for pregnant
associated with service lines and home plumbing.
women
and youngCounty
children.
Lead in
drinkingiswater
is primarily
from materials
and drinking
components
The Frederick
Sanitation
Authority
responsible
for providing
high quality
associated
with
service
lines
and
home
plumbing.
water, but cannot control the variety of materials used in plumbing components. When your water has
Frederick
County
Sanitation
is responsible
for providing
highyour
quality
drinking
been sitting The
for several
hours,
you can
minimizeAuthority
the potential
for lead exposure
by �lushing
tap 15
to
water,
but
cannot
control
the
variety
of
materials
used
in
plumbing
components.
When
your
water
30 seconds or until it becomes cold or reaches a steady temperature before using water for drinking or has
been Ifsitting
hours,
you can
potential
for lead
exposure
�lushing
your
tap 15 to
cooking.
you for
are several
concerned
about
leadminimize
in your the
water,
you may
wish
to havebyyour
water
tested.
temperature
waterexposure
for drinking
30 seconds
or until
it becomes
coldtesting
or reaches
a steady
Information
on lead
in drinking
water,
methods,
and steps
you canbefore
take tousing
minimize
is or
cooking.
If
you
are
concerned
about
lead
in
your
water,
you
may
wish
to
have
your
water
tested.
available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
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.
Only Tap Water Delivers
Only
Tap water
Water
Delivers
As your
provider,
we’re constantly monitoring the condition of our water distribution
infrastructure. We repair what we can and replace what we must. It’s a signi�icant expense, but it’s an
As your water provider, we’re constantly monitoring the condition of our water distribution
investment worth making.
infrastructure.
Wedelivers
repair what
canjust
andsafe
replace
whatwater.
we must.
It’s a signi�icant
expense,
but it’s an
morewe
than
drinking
It delivers
public health
protection,
Our tap water
investment
worth
making.
support for the economy, and the quality of life we enjoy. Our job is to ensure that your water keeps
water
delivers
than It’s
justall
safe
drinking
water. It delivers
public
health
protection,
Our tap
part
of the commitment
to serve
you and
everyone
�lowing not only
today
but well
into more
the future.
support
for
the
economy,
and
the
quality
of
life
we
enjoy.
Our
job
is
to
ensure
that
your
water
keeps
in our community.
�lowing not only today but well into the future. It’s all part of the commitment to serve you and everyone
in our community.
Customer Participation
Customer
interested in learning more about Frederick County Sanitation Authority and water
If you areParticipation
quality or participating in the decision making process, there are a number of opportunities available.
If you are interested in learning more about Frederick County Sanitation Authority and water
Inquiries about water quality or about public participation and policy decisions can be made by calling
quality
oratparticipating
in the
making
process,
there
are a number
of opportunities
the Authority
540-868-1061.
Thedecision
Frederick
County
Sanitation
Authority
board meets
at 5:30 p.m.available.
the
quality
about public
participation
and
policyRoad,
decisions
can be
by calling
thirdInquiries
Tuesday about
of eachwater
month
at theorAuthority’s
headquarters,
315
Tasker
Stephens
Citymade
VA. Board
the Authority
at the
540-868-1061.
The Frederick County Sanitation Authority board meets at 5:30 p.m. the
public.
sessions
are open to
third Tuesday of each month at the Authority’s headquarters, 315 Tasker Road, Stephens City VA. Board
sessions are open to the public.
Fre d e r i c k C o u n t y S a n i t a t i o n Au t h o r i t y
Fre d e r i c k P.
C oO.u nBtox
y S1a8n7i t7a t i o n Au t h o r i t y
W i n c h eP.sO.
t e r,B ox
VA 12827670 4
W i n c h e s t e r, VA 2 2 6 0 4
315 Tasker Road (I 81, Exit 310) Drive through window and 24 hour drop box for your convenience.
315 Tasker Road (I 81, Exit 310) Drive through window and 24 hour drop box for your convenience.
Safe Water at Your Service
Safe
at Your
Service
are pleased
to report
that your drinking water meets all State and Federal Requirements administered by
WeWater
the Virginia Department of Health (VDH) Of�ice of Water Programs. This report summarizes the quality of water
We are pleased to report that your drinking water meets all State and Federal Requirements administered by
provided to our customers for calendar year 2010. It re�lects the efforts of our employees to supply safe drinking
theIncluded
Virginiaare
Department
of Health
(VDH)
of Water
Programs.
This
the qualitysetofby
water
water.
details about
the source
of Of�ice
your water,
what
it contains,
andreport
how itsummarizes
meets the standards
provided
to
our
customers
for
calendar
year
2010.
It
re�lects
the
efforts
of
our
employees
to
supply
safe
drinking
state and federal regulatory agencies.
water.
Included
details about
the source
your water,
what itrequesting
contains, and
how
it meetsisthe
standards
set by
Although
thisare
information
has always
beenofavailable
to anyone
it, the
Authority
furnishing
this
state
and
federal
regulatory
agencies.
report in accordance with the United States Environmental Protection Agency. Additional information is available at
Although
this
information
has always
available
to anyone
requesting
theattempted
Authoritytoisaccomplish
furnishing this
the Authority’s
of�ice to
address
any special
needs, been
concerns
or questions.
The
Authorityit,has
report
accordance
the United
Stateswhile
Environmental
this in
a costinconscious
andwith
informative
manner
meeting theProtection
guidelines.Agency. Additional information is available at
the Authority’s of�ice to address any special needs, concerns or questions. The Authority has attempted to accomplish
this in a cost conscious and informative manner while meeting the guidelines.
Testing Your Water
DuringYour
2010, Water
the Authority’s laboratories at the Diehl and Anderson Water Filtration Plants ran more than
Testing
60,000 process tests to insure your drinking water meets the Virginia Department of Health and the United States
During 2010, the Authority’s laboratories at the Diehl and Anderson Water Filtration Plants ran more than
Environmental Protection Agency standards.
60,000 process tests to insure your drinking water meets the Virginia Department of Health and the United States
Environmental Protection Agency standards.
Violations
The Frederick
Violations
County Sanitation Authority is in full compliance with all water quality, monitoring, and
reporting requirements and no violations occurred during calendar year 2010.
The Frederick County Sanitation Authority is in full compliance with all water quality, monitoring, and
reporting requirements and no violations occurred during calendar year 2010.
No Cryptosporidium or Giardia
NoACryptosporidium
or Frederick
GiardiaCounty Sanitation Authority voluntarily tested both source water
lthough not required, the
and the �inished treated water at the Diehl and Anderson Water Filtration Plants for cryptosporidium and giardia
Although not required, the Frederick County Sanitation Authority voluntarily tested both source water
during 2010, none was detected.
and the �inished treated water at the Diehl and Anderson Water Filtration Plants for cryptosporidium and giardia
during 2010, none was detected.
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY’S SAFE DRINKING WATER HOTLINE 800-426-4791
UNITED
STATES ENVIRONMENTAL
PROTECTION
AGENCY’S
SAFE DRINKING
WATER HOTLINE 800-426-4791
Visit the
Frederick
County Sanitation
Authority
Website
at www.fcsa-water.com
Visit the Frederick County Sanitation Authority Website at www.fcsa-water.com
Frederick County’s Water Sources
Frederick County’s Water Sources
39% of the treated water provided by the Frederick County Sanitation Authority is taken from
of the treated
water
provided
theClearbrook
Frederick County
Sanitation
Authority
is takenas
from
39%
the Stephens City
quarries,
and 43%
is taken
frombythe
quarries.
The water
is classi�ied
a
Stephens
quarries,
and 43%
is the
taken
from the
Clearbrook
quarries.
The
water
is classi�ied
as a
surface the
water
source.City
The
water taken
from
quarries
is treated
at the
James H.
Diehl
Water
Filtration
surface
The water
taken
from the Plant.
quarriesThe
is treated
at the
James H.
Wateraddition,
Filtration
Plant and
the water
Jamessource.
T. Anderson
Water
Filtration
process
consists
of Diehl
chemical
Plant
and
the
James
T.
Anderson
Water
Filtration
Plant.
The
process
consists
of
chemical
addition,
�locculation, sedimentation, �iltration to remove turbidity, chlorination to disinfect the water, and �luoride
�locculation,
sedimentation,
�iltration
to
remove
turbidity,
chlorination
to
disinfect
the
water,
and
�luoride
is added to help prevent tooth decay. 18% of the water provided in 2010 was purchased from the City
of
is
added
to
help
prevent
tooth
decay.
18%
of
the
water
provided
in
2010
was
purchased
from
the
City of
Winchester. This water is drawn from the North Fork of the Shenandoah River, a surface water source.
Winchester.
Thisthree
watersources
is drawn
from
the North
Fork
of the Shenandoah
a surface
water source.
The waters
from these
are
blended
in the
Sanitation
Authority’sRiver,
system
and distributed
to
The
waters
from
these
three
sources
are
blended
in
the
Sanitation
Authority’s
system
and
distributed
our customers. The Authority has 4.65 million gallons of storage, plus 4.35 million gallons into
our customers. The Authority has 4.65 million gallons of storage, plus 4.35 million gallons in
clearwell/�inished water tanks at the water plants.
The table below lists only those water substances that had some level of detection. More than 100 substances were sampled for, but were not present or
were
below
the detection
limits.
All drinking
water,
including
bottled
drinkingMore
water,
may
expected
contain
at least
small amounts
of
The table
below
lists only those
water
substances
that had
some level
of detection.
than
100reasonably
substances be
were
sampledtofor,
but were
not present
or
some
substances.
The presence
ofdrinking
contaminants
does not bottled
necessarily
indicate
themay
water
poses a be
health
risk. to
More
information
about
contaminants
and
were below
the detection
limits. All
water, including
drinking
water,
reasonably
expected
contain
at least small
amounts
of
potential
health effects
can be obtained
by calling
THE
AGENCY'S
DRINKING
WATER HOTLINE
at
some substances.
The presence
of contaminants
does
not ENVIRONMENTAL
necessarily indicate the PROTECTION
water poses a health
risk. MoreSAFE
information
about contaminants
and
potential health
cantheir
be obtained
THE ENVIRONMENTAL PROTECTION AGENCY'S
800-426-4791
oreffects
visiting
website by
at calling
http://water.epa.gov/drink/hotline/index.cfm
. SAFE DRINKING WATER HOTLINE at
800-426-4791 or visiting their Highest
website at http://water.epa.gov/drink/hotline/index.cfm
Highest Level Detected .
Ideal
Highest
Highest Level Detected
Level
Sources
Ideal
Goals
Water Sources
Substance
Level
Sources of
Allowed
Goals
Water
Sources
Substance
Tested
for
Allowed
of
EPA’s
EPA’s
Contamination
Tested for
Diehl Plant
Anderson Plant
Miller Plant
EPA’s
EPA’s
Contamination
MCLG
MCL
Miller Plant
Anderson Plant
Diehl Plant
MCLG
clearwell/�inished water tanks at the water plants.
Special
Information
for Immuno
Compromised
Special
Information
for Immuno
Compromised
Assessments
SourceSource
WaterWater
Assessments
Source water assessments for the Frederick County Sanitation Authority have been completed by
ource water assessments for the Frederick County Sanitation Authority have been completed by
Sthe
Virginia Department of Health. These assessments determined that the Authority’s water sources, the
the Virginia
Department
Health. These
assessments
determined
water River,
sources,
thebe
Stephens
City andofClearbrook
quarries
as well as
the Norththat
Forkthe
ofAuthority’s
the Shenandoah
may
Stephens
City
and
Clearbrook
quarries
as
well
as
the
North
Fork
of
the
Shenandoah
River,
may
susceptible to contamination because they are surface water sources exposed to a wide arraybeof
susceptible
to contamination
they are
surfacehydrologic,
water sources
exposed
to a wide array
of
contaminants
at varyingbecause
concentrations.
Changing
hydraulic
and atmospheric
conditions
contaminants
atmigration
varying of
concentrations.
Changing
hydrologic,
and atmospheric
conditions
promote
contaminants from
land use
activities ofhydraulic
concern within
the assessment
area. More
promoteinformation
migration may
of contaminants
from
land use
within the assessment area. More
theactivities
Authorityofatconcern
be obtained by
contacting
540-868-1061.
information may be obtained by contacting the Authority at 540-868-1061.
N/A
N/A
Beta/Photon
Beta/Photon
emitters
emitters
00
50pCi/L*
pCi/L* 3.13.1
pCi/L
50
pCi/L
No No
2.7 pCi/L No NoNot Required
Not Required
No
2.7 pCi/L
natural
and man-made
No of Decay
Decay
naturalof
and
man-made
deposits deposits
Alpha
Alpha emitters
emitters
00
pCi/L
1515pCi/L
pCi/L
1.91.9
pCi/L
No No
Not Required
0.8 pCi/L No NoNot Required
No
0.8 pCi/L
No
natural deposits
Erosion ofErosion
natural of
deposits
Combined
Combined
Radium
Radium
00
55pCi/L
pCi/L
2.12.1
pCi/L
pCi/L
No No
No
1.6 pCi/L
1.6 pCi/L No NoNot Required
Not Required
No
Erosion ofErosion
natural of
deposits
natural deposits
Fluoride
Fluoride
44ppm
ppm
Quality of Your Drinking Water
Your drinking water is routinely monitored according to Federal and State Regulations for a
variety of contaminants. The table on the next page shows the results of our monitoring for the period
our drinking
water 31,
is 2010.
routinely monitored according to Federal and State Regulations for a
Y
January
1 to December
variety of contaminants.
table
on table
the next
pagetesting
showsdone
the inresults
our monitoring
forDepartment
the periodof
Most of the The
results
in the
are from
2010. of
However,
the Virginia
January Health
1 to December
2010. for some contaminants less than once per year because the concentrations of
allows us31,
to monitor
Most
the results in
arefrequently.
from testing
done
2010.
the Virginia
Department
of
these of
contaminants
dothe
nottable
change
Some
ofin
our
data, However,
though accurate,
is more
than one year
Health allows
old. us to monitor for some contaminants less than once per year because the concentrations of
regulatory
We constantly
monitor
for various
contaminants
the water
supplyis to
meet
all one
these contaminants
do not change
frequently.
Some
of our data,inthough
accurate,
more
than
year
requirements. The table lists only those contaminants that had some level of detection. Many other
old.
contaminants
have
been analyzed
but were
not present
below
the detection
of the lab
We constantly
monitor
for various
contaminants
in or
thewere
water
supply
to meet limits
all regulatory
equipment.
requirements.
The table lists only those contaminants that had some level of detection. Many other
contaminants have been analyzed but were not present or were below the detection limits of the lab
equipment.
4 4ppm
ppm
Nitrate
Nitrate
10 ppm 10 ppm
(as Nitrogen)
Nitrogen) 10 ppm 10 ppm
(as
Barium
Barium
Total Organic
Total
Organic
Carbon
Carbon
2 ppm
2 ppm
N/A
N/A
1.06 1.06
ppmppm
Highest
1.15
ppm
Highest
Highest
1.15
ppm
Highest
Avg. Avg. No
Monthly
Avg.
Monthly
Monthly
Avg. No No Monthly
Range
0.230.23
- 1.44ppm
Range
- 1.44ppm
2 ppm
2 ppm
TT
TT
Range
0.25 -0.25
1.30 -ppm
Range
1.30 ppm
Range Range
0.50 - 1.28
0.50ppm
- 1.28 ppm
No No
2.662.66
ppmppm No No 1.42 ppm
1.42 ppm No
0.047 ppm
No
0.063 ppm
1.15 Avg. for Yr.
1.15
Avg.
for Yr.
1.00
- 2.02
range
1.00 - 2.02 range No
Ratio of actual to
require
Ratioremoval
of actual to
No
No
0.063 ppm
No
No
No
0.031 ppm
drilling wastes
2.16Avg. for Yr.
2.16Avg.
1.00 – 3.22
rangefor Yr.
No
1.00 Avg. for Yr.
for Yr.
1.001.00
- 1.00Avg.
range
No
1.00
– 3.22
of actual
to range
NoRatio
requireRatio
removal
of actual to
1.00
- 1.00torange
Ratio
of actual
require
removal
Ratio
of actual to
require removal
0.031 ppm
require removal
Soil runoff
Soil runoff
Erosion ofErosion
naturalof
deposits;
naturalwater
deposits; water
additive which
promotes
teeth;
additive
which strong
promotes
strong teeth;
No
dischargedischarge
from fertilizer
aluminum
fromand
fertilizer
and aluminum
factories. factories.
Runoff from fertilizer use; leaching from
Runoff from fertilizer use; leaching from
septic tanks; sewage; Erosion of natural
septic tanks; sewage; Erosion of natural
No
deposits
deposits
Erosion of natural deposits, discharge
Erosion
of natural
deposits,
from metal
refineries,
discharge
of discharge
from
metal
refineries, discharge of
No
drilling
wastes
0.96 ppm
0.96Highest
ppm Highest
1.53
ppm
1.53
ppm
0.047 ppm
No
Avg Avg No
No Monthly
Monthly
Regulated at the Customer’s Tap
No
Naturally present in environment
Naturally present in environment
require removal
Regulated at the Customer’s Tap
City of Winchester
Frederick County Sanitation Authority
AL
Lead
Lead
Maximum Contaminant
Levels (MCL)
Maximum Contaminant Levels (MCL) are set at very stringent levels by the U.S. Environmental
water
each day
throughout the
a 70-year
life span.
EPA generally
setsaverage
MCLs atadult
levelsdrinks
that will
result
Protection
Agency.
In developing
standards,
EPA assumes
that the
two
litersinofno
adverse
health
effects
for
some
contaminants
for
a
one-in-ten-thousand
to
one-in-a-million
chance
water each day throughout a 70-year life span. EPA generally sets MCLs at levels that will result
in noof
having
the
described
health
effect
for
other
contaminants.
adverse health effects for some contaminants for a one-in-ten-thousand to one-in-a-million chance of
having the
described
healthDrinking
effect for other
contaminants.
Quality
of Your
Water
Violation
Violation
Violation
TT, 1 NTU
TT, 1 NTU
Max Day 0.07 NTU
Max Day 0.10 NTU
max, 0.3 Max Day 0.19 NTU
Max Day 0.07 NTU
0.10 NTU
max, 0.3 Max Day 0.19 NTU
NoMax Day
No
No
No
No
100%
<0.3
NTU
95%
of
the
<0.3 NTU
100%
<0.3
NTU
100% <0.3 NTU
95% of the
100% 100%
<0.3 NTU
100% <0.3 NTU
time
time
Turbidity
Turbidity
Maximum Contaminant Levels (MCL)
Protection
In developing
the standards,
assumes
that the
average
adult
two liters of
M
aximumAgency.
Contaminant
Levels (MCL)
are set EPA
at very
stringent
levels
by the
U.S.drinks
Environmental
Regulated at the Water Filtration Plant
Regulated
at the Water Filtration
Plant
Violation
Violation
Violation
may be
more
vulnerable
to contaminants
in drinking
water
than
Some people
may
be more
vulnerable
to contaminants
in drinking
water
thanthethegeneral
general
Some people
population.
Immuno-compromised
persons,
such such
as persons
withwith
cancer
undergoing
chemotherapy,
population.
Immuno-compromised
persons,
as persons
cancer
undergoing
chemotherapy,
personspersons
who have
organorgan
transplants,
people
withwith
HIV/AIDS
or or
other
immune
who undergone
have undergone
transplants,
people
HIV/AIDS
other
immunesystem
system
disorders,
some elderly
persons
and infants
can be
particularly
at risk
from
infections.
disorders,
some elderly
persons
and infants
can
be particularly
at risk
from
infections.
These people
shouldshould
seek advice
aboutabout
drinking
water
fromfrom
their
healthcare
providers.
These people
seek advice
drinking
water
their
healthcare
providers. The
The
Environmental
Protection
Agency
and
the
Centers
for
Disease
Control
guidelines
on
appropriate
means
Environmental Protection Agency and the Centers for Disease Control guidelines on appropriate means
lessen
of infections
by Cryptosporidium
and other
microbiological
contaminants
available
to lessentothe
riskthe
of risk
infections
by Cryptosporidium
and other
microbiological
contaminants
areare
available
800-426-4791 or or their
their website
website
the EPA’s
Drinking
Hotline
from from
the EPA’s
Safe Safe
Drinking
WaterWater
Hotline
at at800-426-4791
http://water.epa.gov/drink/hotline/index.cfm
or Centers
the Centers
for Disease
Control
800-232-4636oror
or the
for Disease
Control
at at
800-232-4636
http://water.epa.gov/drink/hotline/index.cfm
their website
http://www.cdc.gov/parasites/water.html.
their website
http://www.cdc.gov/parasites/water.html.
MCL
Copper
Copper
0
0
0
0
Total Coliform
Bacteria
0
Total
Bacteria
Trihalomethanes
(TTHM)
Total
N/A
Total Coliform
Trihalomethanes
Haloacetic
Acids
(TTHM)
(HAA5)
0
N/A
N/A
Haloacetic Acids
N/A
Chlorine
MRDLG
(HAA5)
4 mgl
AL
15 ppb
15 ppb
1.3 ppm
1.3 ppm
One Positive
Per month
One Positive
80 ppb
Per month
Average
for
year
80 ppb
Average for
60 ppb
year
Average
for
year
60 ppb
Average
MRDLfor
year
4mgl
Frederick
CountyTotal
Sanitation Authority
90th
Percentile Detection
exceeding
AL
Total
90th
Violation
Percentile Detection exceeding AL
4.27 ppb
1
4.27 ppb
0.176 ppm
No
No
0
Violation
Percentile Detection exceeding AL
2.9 ppb
No
0
City of
Winchester
Total
Percentile Detection
Total
90th exceeding AL
Violation
1
0.176 ppm
90
th
2.9 ppb
0.445 ppm
No
1
0
0.445 ppm
in Violation
the Distribution
System
None Detected
None Detected
20.10 ppb Average for year
Range 10.0 – 50.0 ppb
20.10 ppb Average for year
Range 10.0 – 50.0 ppb
12.84 ppb Average for year
Range 6.8 - 24.0 ppb
12.84 ppb Average for year
2.44 6.8
mgl- 24.0 ppb
Range
Average for year
Range 0.4 – 3.8 mgl
Violation23.68 ppb Average
None Detected
for year
No
No
No
No
Corrosion of household plumbing
NoCorrosion
of household
plumbing
systems,
Erosions
of natural deposits.
No
systems; Erosion of natural deposits;
Corrosion
of household plumbing
leaching from
wood preservatives
0
No
Violation
Naturally present in environment
Naturally present in environment
23.68 ppb Average for year
Range 6.2 - 74 ppb
No
By-product of drinking water
chlorination
19.56 ppb Average for year
2.19 mgl
Range
7.4 – 70.0 ppb
No
19.56 ppb Average for year
Range 7.4 – 70.0 ppb
Average for year
Range 0.4 - 3.4 mgl
No
By-product of drinking water
chlorination
No
No
2.44 mgl
2.19 mgl
Chlorine
MRDLG
MRDL
* The MCL for beta particles is 4/mrem/year. EPA considers 50pCi/L to be the levelAverage
of concern forfor
betayear
particles.
No
Average for year
No
Definitions:
4 mgl
4mgl
Range
0.4
–
3.8
mgl
Range
0.4
3.4
mgl
In the table above and elsewhere in this report, you will find many terms and abbreviations you might not be familiar with. The following definitions are provided to help you better understand these terms.
*
systems; Erosion of natural deposits;
leaching from wood preservatives
Violation
Range 6.2 - 74 ppb
No
Corrosion of household plumbing
systems, Erosions of natural deposits.
1
Regulated in the Distribution System
NoneRegulated
Detected
Violation
No
By-product of drinking water
chlorination
By-product of drinking water
chlorination
By-product of drinking
water
chlorination
By-product of drinking water
chlorination
• for MCL
Contaminant
Level
- the
highest level
of contaminant
thatof
is concern
allowed infor
drinking
water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
The MCL
beta Maximum
particles is
4/mrem/year.
EPA
considers
50pCi/L
to be the level
beta particles.
•
MCLG Maximum Contaminant Level Goal - The level of a contaminant in drinking water below which there is no known or expected risk to health. MGLGs allow for a margin of safety.
Definitions:
•
MRDL Maximum Residual Disinfectant Level – The highest level of disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
In the table above and elsewhere in this report, you will find many terms and abbreviations you might not be familiar with. The following definitions are provided to help you better understand these terms.
•
MRDLG – Maximum Residual Disinfectant Level Goal – The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLG’s do not reflect the benefits of the use of disinfectants to control
•
MCL Maximum
Contaminant Level - the highest level of contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
microbial
contaminants.
••
MCLG
Maximum Contaminant
Level
- The
of a contaminant
in drinking
water
there is no
or expected
NTU
- Nephelometric
Turbidity Unit
- A Goal
measure
of level
the clarity
of water. Turbidity
in excess
of 5below
NTU iswhich
just noticeable
toknown
the average
person. risk to health. MGLGs allow for a margin of safety.
••
MRDL Maximum
Residual
Disinfectant
Level
– Theabsorbed
highest level
ofbody.
disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
mrem/year
- Millirems
per yearA measure
of radium
by the
••
MRDLG
– Maximum
Disinfectant
Level Goal
The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLG’s do not reflect the benefits of the use of disinfectants to control
pCi/L
- Picocuries
per Residual
liter - A measure
of radioactivity
in –water.
microbial
contaminants.
•
ppm
- Parts
per million - One part per million corresponds to 1 drop in 16 gallons
•
NTU
Nephelometric
Turbidity
Unit
A
measure
of
the
clarity
ppb - Parts per billion - One part per billion corresponds to 1 dropof
in water.
15,750 Turbidity
gallons. in excess of 5 NTU is just noticeable to the average person.
•
mrem/year
- Millirems
per year- A measure
of radium
absorbed
the body.
AL
- Action Level
- The concentration
of a contaminant
that
triggers by
treatment
or other requirements which a water system must follow. Action levels are reported at the 90th percentile for homes at the greatest risk.
TT
-Treatment
Technique
- A-required
process
intended to in
reduce
the level of contaminant in drinking water.
•
pCi/L
- Picocuries
per liter
A measure
of radioactivity
water.
N/A
Applicable.
•
ppm- Not
- Parts
per million - One part per million corresponds to 1 drop in 16 gallons
•
ppb - Parts per billion - One part per billion corresponds to 1 drop in 15,750 gallons.
•
AL - Action Level - The concentration of a contaminant that triggers treatment or other requirements which a water system must follow. Action levels are reported at the 90th percentile for homes at the greatest risk.
•
TT -Treatment Technique - A required process intended to reduce the level of contaminant in drinking water.
•
N/A - Not Applicable.