HOW TO READ THIS TABLE
It's easy! Our water is tested to assure
that it is safe and healthy. The results of tests performed in 2008
or the most recent testing available are presented in the table.
The column marked GOAL
shows the Maximum Contaminant Level Goal or MCLG. This is
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.
The column marked MAXIMUM
ALLOWED is the Maximum Contaminant Level or MCL. This
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.
The column marked DETECTED
LEVEL shows the results observed in our water during the most
recent round of testing.
SOURCE OF CONTAMINANTS
provides an explanation of the typical natural or man-made origins
of the contaminant. Footnotes below the chart are provided to explain
important details.
ACTION LEVEL is
the concentration of a contaminant which, if exceeded, triggers
treatment or other requirements that a water system must follow.
The data presented in
this report is from the most recent testing done in accordance with
regulations. We test for numerous contaminants, but only contaminants found are reported.
The Water We Drink: Summary of Water Quality Data |
| INORGANIC CONTAMINANTS |
DATE TESTED |
UNIT |
GOAL (MCLG) |
MAXIMUM ALLOWED (MCL) |
DETECTED LEVEL |
RANGE OF VALUES TESTED |
SOURCE OF CONTAMINANTS |
| Barium |
2008 |
ppm |
2 |
2 |
0.21 |
0.072-0.21 |
Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.
|
| Chromium |
2008 |
ppb |
0.1 |
0.1 |
0.0071 |
0.0033—0.0071 |
Discharge from steel and pulp mills; Erosion of natural deposits. |
| Copper 1 |
2008 |
ppm |
1.3 |
AL = 1.3 |
.089 |
|
Corrosion of household plumbing systems; Erosion of natural deposits; Leaching from wood preservatives. |
| Fluoride 2 |
2008 |
ppm |
4 |
4 |
1.0 |
0.77-1.0 |
Erosion of natural deposits; Discharge from fertilizer and aluminum factories. |
| Lead 3 |
2008 |
ppb |
0 |
AL = 15 |
11 |
|
Corrosion of household plumbing systems; Erosion of natural deposits. |
| Nickel |
2008 |
ppb |
n/a |
100 |
0.0050 |
0.0023—0.0050 |
Natrually occurs in soils, groundwater and surface waters, ofen used in electroplating, stainless steel and alloy products. |
| Nitrate |
2008 |
ppm |
10 |
10 |
1.6 |
nd—1.6 |
Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits. |
| Sulfate |
2005 |
ppm |
n/a |
n/a |
58 |
31—58 |
Erosion of natural deposits. |
| Sodium |
2008 |
ppm |
n/a |
n/a |
31 |
12—31 |
Erosion of natural deposits. |
| VOLATILE ORGANIC CONTAMINANTS |
DATE TESTED |
UNIT |
GOAL (MCLG) |
MAXIMUM ALLOWED (MCL) |
DETECTED LEVEL |
RANGE OF VALUES TESTED |
SOURCE OF CONTAMINANTS |
| TTHMs
[Total Trihalomethanes] |
2008 |
ppb |
n/a |
100 |
18.3 |
3.9-28.7 |
By-product of drinking water chlorination. |
HAAs
(Total Halocetic Acids) |
2008 |
ppb |
n/a |
60 |
5.9 |
nd—13.7 |
By-product of drinking water disinfection. |
| MICROBIOLOGICAL CONTAMINANTS |
DATE TESTED |
UNIT |
GOAL (MCLG) |
MAXIMUM ALLOWED (MCL) |
DETECTED LEVEL |
RANGE OF VALUES TESTED |
SOURCE OF CONTAMINANTS |
| Total Coliform |
6/08 |
% of Samples |
0 |
≥ 5% |
|
|
Naturally present in the environment |
| RADIOACTIVE CONTAMINANTS |
DATE TESTED |
UNIT |
GOAL (MCLG) |
MAXIMUM ALLOWED (MCL) |
DETECTED LEVEL |
RANGE OF VALUES TESTED |
SOURCE OF CONTAMINANTS |
| Alpha emitters |
2003 |
pCi/L |
0 |
5 |
3 |
nd—3 |
Erosion of natural deposits |
| Beta/photon emitters |
2003 |
pCi/L |
0 |
50 |
5 |
nd—5 |
Decay of natural and man-made deposits |
| Radium 228 |
2003 |
pCi/L |
0 |
5 |
0.4 |
nd—0.4 |
Erosion of natural deposits |
WATER
QUALITY TABLE FOOTNOTES
1
None of the samples tested had copper at a level that exceeded the
Action Level of 1.3 ppm.
2
We add fluoride
at a concentration to yield a nominal 1 ppm in Mishawaka's water
to promote strong teeth in
children.
3
None of the samples tested had lead at a level that exceeded the
Action Level of 15 ppb.
Important Information on Lead:
Infants and young
children are typically more vulnerable to lead in drinking water
than the general population. It is possible that lead levels at
your home may be higher than at other homes in the community as
a result of materials used in your home's plumbing. If you are concerned
about elevated lead levels in your home's water, you may wish to
have your water tested and flush your tap for 30 seconds to 2 minutes
before using tap water. Additional information is available from
the Safe Drinking Water Hotline - (800) 426-4791. |
KEY
TO TABLE:
AL
= Action Level
MCL = Maximum Contaminant Level
MCLG = Maximum Contaminant Level Goal
pCi/L = picocuries per liter (a measure of radioactivity)
ppm = parts per million, or milligrams per liter (mg/L)
ppb = parts per billion, or micrograms per liter
n/a = not applicable
nd = none detected |
|