Contaminants
|
Violation
(Yes/No)
|
Date of Sample
|
Level Detected (Maximum) (Range)
|
UNIT MEASUREMENT
|
MCLG
|
Regulatory Limit
(MCL or AL)
|
Likely Source of Contaminant
|
|
Inorganic Contaminants
|
Copper
|
No
|
July / August 2017
|
0.01
- 0.088
|
mg/L
|
1.3
|
AL = 1.3
|
Corrosion of household plumbing systems; Erosion of natural
deposits
|
Lead
|
No
|
July / August 2017
|
ND - 5.6
1.7((1) |
mg/L
|
0
|
AL = 15
|
Corrosion of household plumbing systems; Erosion of natural
deposits
|
Barium
|
No
|
02/28/19
|
0.013 - 0.03
|
mg/L
|
2.0
|
MCL = 2.0
|
Naturally occurring
|
Ammonia
|
No
|
01/10/19
|
ND
- 0.53
|
mg/L
|
n/a
|
NONE
|
Naturally occurring
|
Sodium
|
No
|
01/16/19
|
19.2 - 45.2
|
mg/L
|
n/a
|
No MCL(2)
|
Naturally occurring
|
Iron
|
No
|
02/11/19
|
ND - 60
|
ug/L
|
n/a
|
MCL = 300
|
Naturally occurring
|
Zinc
|
No
|
01/16/19
|
MD - 0.053
|
mg/L
|
n/a
|
MCL = 5
|
Naturally occurring
|
Nickel
|
No
|
01/28/19
|
0.0005 - 0.0022
|
ug/L
|
n/a
|
No MCL
|
Naturally occurring
|
Manganese
|
No
|
01/28/19
|
9.0 - 9.8
|
ug/L
|
n/a
|
MCL = 300
|
Naturally occurring
|
Chloride
|
No
|
01/28/19
|
42.8 - 47.5
|
mg/L
|
n/a
|
MCL = 250
|
Naturally occurring
|
Calcium
|
No
|
02/28/19
|
16.5 - 21.0
|
mg/L
|
n/a
|
No MCL
|
Naturally occurring
|
Nitrate
|
No
|
02/28/19
|
4.3 - 7.5
|
mg/L
|
1.0
|
MCL = 10
|
Runoff from fertilizer and leaching from
septic tanks and sewage
|
Nitrite
|
No
|
03/04/19
|
ND - 0.39
|
mg/L
|
n/a
|
MCL = 1.0
|
Runoff from fertilizer and leaching from
septic tanks and sewage
|
Calcium
Hardness
|
No
|
02/28/19
|
41.5 - 52.4 m
|
mg/L
|
n/a
|
No MCL
|
Naturally occurring
|
Total Hardness
|
No
|
01/29/19
|
81.9 - 102.0
|
mg/L
|
n/a
|
No MCL
|
Naturally occurring
|
Total Alkalinity
|
No
|
01/16/19
|
45.1 - 67.0
|
mg/L
|
n/a
|
No MCL
|
Naturally occurring
|
Total Dissolved Solids (TDS)
|
No
|
02/11/19
|
169.0 - 217.0
|
mg/L
|
n/a
|
No MCL
|
Naturally occurring
|
Sulfate
|
No
|
01/29/19
|
30.4 - 46.5
|
mg/L
|
n/a
|
MCL = 250
|
Naturally occurring
|
Volatile Organic Contaminants
|
Tetrachloroethene
|
No
|
09/09/19
|
ND - 0.88
|
ug/L
|
0
|
MCL =
5
|
Industrial/Commercial Discharge
|
MTBE
|
No
|
06/24/19
|
ND - 0.63
|
ug/L
|
0
|
MCL =
10
|
Gasoline Additive
|
Disinfection By-Products
|
Total Trihalomethanes (TTHMs)
|
No
|
10/17/19
|
1.2 - 3.2
|
ug/L
|
n/a
|
MCL = 80
|
Disinfection By-Products
|
Radionuclide
|
Gross Alpha
|
No
|
02/06/19
|
1.53 - 3.52
|
pCi/L
|
0
|
MCL = 15
|
Naturally occurring
|
Gross Beta
|
No
|
02/14/19
|
3.11 - 3.78
|
pCi/L
|
0
|
MCL = 50
|
Naturally occurring
|
Radium 226 & 228
|
No
|
02/06/19
|
2.11 - 3.05
|
pCi/L
|
0
|
MCL = 5(3)
|
Naturally occurring
|
Uranium
|
No
|
02/06/19
|
0.77 - .76
|
ug/L
|
n/a
|
MCL = 30
|
Naturally occurring
|
Perfluorochemicals
|
Perfluoroheptanoic Acid
|
No
|
07/31/19
|
ND - 4.5
|
ng/i
|
0
|
MCL = 50,000
|
Industrial Discharge
|
Perfluorohexanesulfonic Acid
|
No |
07/25/19
|
ND -8.1
|
ng/i
|
0
|
MCL = 50,000
|
Industrial Discharge
|
Perfluorononanoic Acid
|
No
|
07/31/19
|
ND - 9.1
|
ng/i
|
0
|
MCL = 50,000
|
Industrial Discharge
|
Perfluorooctanesulfonic Acid (PFOS)
|
No
|
07/31/19
|
ND - 14.6
|
ng/i
|
0
|
HA = 70
|
Industrial Discharge
|
Perfluorooctanoic Acid (PFOA)
|
No
|
07/31/19
|
ND - 19.1
|
ng/i
|
0
|
HA = 70
|
Industrial Discharge
|
Unregulated Contaminant Monitoring Rule - Phase 3 (UCMR3)
|
1.4-Dioxane
|
No
|
07/10/19
|
0.17 - 7.1
|
ug/I
|
n/a
|
HA = 35
|
Industrial Discharge
|
Hexavelent Chromium
|
No
|
05/27/14
|
ND - 1.1
|
ug/I
|
n/a
|
No MCL
|
Naturally deposits and Industrial Discharge
|
Strontium
|
No
|
05/27/14
|
77.8 - 86.7
|
ug/I
|
n/a
|
HA = 4000
|
Naturally occurring
|
Chlorate
|
No
|
04/17/14
|
ND - 140
|
ug/I
|
n/a
|
No MCL
|
Naturally occurring
|
Bromide
|
No
|
01/17/19
|
ND - 111.0
|
ug/I
|
n/a
|
No MCL
|
Naturally occurring
|
Unregulated Contaminant Monitoring Rule - Phase 4 (UCMR4)
|
Manganese
|
No
|
01/17/19
|
0.62 -30.8
|
ug/I
|
n/a
|
MCL=300
(5)
|
Naturally occurring
|
HAA5
|
No
|
07/30/19
|
0.33 - 1.3
|
ug/I
|
n/a
|
MCL = 60
|
Disinfection By-Products
|
HAA6Br
|
No
|
07/30/19
|
0.33 - 2.06
|
ug/I
|
n/a
|
No MCL
|
Disinfection By-Products
|
HAA9
|
No
|
07/30/19
|
0.33 - 2.06
|
ug/I
|
n/a
|
No MCL
|
Disinfection By-Products
|
Definitions:
Maximum
Contaminant Level (MCL) - The highest level of a
contaminant that is allowed in drinking water. MCLs are set as close to the
MCLGs as feasible.
Maximum
Contaminant Level Goal (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.
Maximum Residual
Disinfection 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
Disinfection 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.
Health Advisory
(HA) - An estimate of acceptable drinking water levels for
a chemical substance based on health effects information; a health advisory
is not a legally enforceable Federal standard, but serves as technical guidance
to assist Federal, State and local officials.
Action Level (AL) -
The concentration of a contaminant which, if exceeded, triggers treatment or
other requirements which a water system must follow.
Milligrams per
liter (mg/l) - Corresponds to one part of liquid in
one million parts of liquid (parts per million - ppm).
Micrograms per
liter (ug/l) - Corresponds to one part of liquid in
one billion parts of liquid (parts per billion - ppb).
Non-Detects (ND) -
Laboratory analysis indicates that the constituent is not present.
pCi/L -
pico Curies perLiter is a measure of radioactivity in water.
(1)- During 2017, we collected and analyzed
30 samples for lead and copper. The action levels for both lead and copper
were not exceeded at any site
tested. The values reported for lead and copper
represent the
90th percentile.
A percentile is a
value on a scale of 100 that indicates the percent of a distribution that is
equal to or below it. The 90th percentile is equal to or greater
than 90% of
the lead and copper values detected at your water system. In our sampling
program, the 90th percentile value is the 4th highest result.
(2)- No MCL has been
established for sodium. However, 20 mg/l is a recommended guideline for
people on high restricted sodium diets and 270 mg/l for
those on moderate
sodium diets.
(3)- MCL for Radium
226 and 228 is a combined total Radium = 5 pCi/L.
(4)- Unregulated Contaminant Monitoring Rule is a Federal water quality sampling program where water suppliers sample and test their source water point of entry for 1
year. Results will be used by the USEPA to determine if the contaminants need to be regulated in the future.
(5)- If iron and manganese are present, the total concentration of both should not exceed 500 ug/l.
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