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2007 Annual Report
Bonita Springs Utilities
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Water Quality Table
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HOW TO READ THIS TABLE
Bonita Springs Utilities routinely monitors for contaminants in your drinking
water according to federal and state laws. The following table shows the results
of our water quality analysis from January 1 through December 31, 2007. Every
regulated contaminant that we detected in the water, even in the most minute
traces, is listed here. The table contains the name of each substance, the
highest level allowed by regulation (MCL), the ideal goals for public health (MCLG),
the amount detected and the usual key to the units of measurements.
Some analyses are required to be performed only once every three years.
Therefore, compounds detected in Bonita Springs water since the year 2005 may
be listed. The EPA requires that the highest value detected during the calendar
year be provided in this report. Not listed are the hundreds of other compounds
for which we tested but did not detect.
TABLE KEY DEFINITIONS
MCL (Maximum Contaminant Level) The highest level of a contaminant that is
allowed in drinking water. MCLs are set as close to the Maximum Contaminant
Level Goals as feasible using the best available treatment technology.
MCLG (Maximum Contaminant Level Goal) The level of contaminant in drinking
water below which there is no known or expected risk to health. MCLGs allow for
a margin of safety.
AN EXPLANATION MCLs are set at very stringent levels. To understand the
possible health effects described for many regulated contaminants, a person
would have to drink two liters of water a day at the MCL level for a lifetime to
have a one-in-a-million chance of having the described health effect.
MRDL (Maximum Residual Disinfectant Level) 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.
MRDLG (Maximum Residual Disinfectant Level Goal) The level of a drinking water
disinfectant below which there is no known or expected risk of health. MRDLGs do
not reflect the benefits of the use of disinfectants to control microbial
contaminants.
Ppm Parts per million. One part per million is the equivalent of one cent in
$10,000.
Ppb Parts per billion. One part per billion is the equivalent of one cent in
$10,000,000.
AL The Action Level is the concentration of a contaminant that, if exceeded,
triggers treatment or other requirements that a water system must follow.
pCi/L Picocuries per liter is a measure of the radioactivity in water.
ND Means not detected and indicates that the substance was not found by
laboratory analysis. |
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PRIMARY STANDARDS |
| SUBSTANCE |
MCLG |
MCL |
RESULTS |
DATE* |
SOURCE |
MCL VIOLATION
Yes/No |
| Microbiological
Contaminants |
| Total Coliform
Bacteria |
0
samples |
Present in 5% or greater of monthly samples |
Total of 8 samples in 2007 (<5%
of any monthly samples) |
1 sample in March, 1 sample in
May, 3 samples in June, 1 sample in Aug, 2
samples in Sept. |
Naturally present in the environment |
No |
| Inorganic
Compounds |
| Barium |
2,000 ppb |
2,000 ppb |
6
ppb |
3/07/06 |
Discharge of drilling wastes; discharge from
metal refineries; erosion of natural deposits |
No |
| Fluoride |
4
ppm |
4
ppm |
0.5
ppm |
3/29/05 |
Erosion of natural deposits; water additive that
promotes strong teeth; discharge from fertilizer
and aluminum factories |
No |
| Sodium ** |
0
ppm |
160 ppm |
80.1 ppm |
3/29/05 |
Saltwater intrusion; leaching from soil |
No |
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Nitrate*** |
0
ppm |
10 ppm |
0.04 ppm |
1/31/07 |
Runoff from fertilizer use; leaching from septic tanks; sewage; erosion of natural deposits |
No |
|
CONTAINMENT
(Unit of Measurement) |
MCLG |
MCL |
LEVEL
DETECTED |
RANGE
OF
RESULTS |
SAMPLING
DATE |
SOURCE |
MCL
VIOLATION
Yes/No |
|
Stage 1 D/DBP Parameters |
| Haloacetic Acids (5)
HAA5 (ppb) |
0 ppb |
60 ppb |
17.1 ppb |
17.1 ppb |
Annual sampling
(8/07) |
By-product of
drinking water chlorination |
No |
| TTHM (Total
Trihalomethanes) (ppb) |
0 ppb |
80 ppb |
34.8 ppb |
34.8 ppb |
Annual sampling
(8/07) |
By-product of
drinking water chlorination |
No |
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MRDLG |
MRDL |
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| Chloramines (ppm) |
4 ppm |
4 ppm |
3.5 ppm |
0.3 - 5.1 ppm |
1/7 thru 12/7 (except
5/07) |
Water additive |
No |
| Chlorine (ppm) |
4 ppm |
4 ppm |
2.4 ppm |
0.3 - 4.0 ppm |
5/07 |
Water additive |
No |
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SUBSTANCE |
MCLG |
90th PERCENTILE RESULT |
AL (ACTION LEVEL) |
SAMPLING SITES EXCEEDING THE AL |
DATE* |
SOURCE |
AL VIOLATION
Yes/No |
| Lead and Copper (Tap
Water) |
| Copper
(tap water) |
1.3 ppm |
0.104 ppm |
1.3 ppm |
0 |
6/05 |
Corrosion
of household plumbing systems, erosion of natural deposits, leaching
from wood preservatives |
No |
| Lead (tap
water)**** |
0 ppb |
2 ppb |
15 ppb |
0 |
6/05 |
Corrosion
of household plumbing systems, erosion of natural deposits |
No |
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SUBSTANCE |
MCLG |
MCL |
RESULTS |
DATE* |
SOURCE |
MCL VIOLATION
Yes/No |
| Radionuclides |
| Alpha Emmitters |
- |
15 pCi/L |
2.8 pCi/L |
3/7/06 |
Naturally occurring or
the result of oil and gas production and mining activities |
No |
| Radium 226 |
- |
5 pCi/L |
0.3 pCi/L |
3/7/06 |
Naturally occurring or
the result of oil and gas production and mining activities |
No |
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*Date Although this report concerns 2007 water quality, some water
contaminants are required to be tested only once every three years. This chart
shows the most recent laboratory test date.
**Sodium The Florida Department of Environmental Protection (DEP) has set the
drinking water standard for sodium at 160 parts per million (ppm) to protect
individuals who are susceptible to sodium-sensitive hypertension or diseases
that cause difficulty in regulating body fluid volume. Sodium is monitored so
that individuals who have been placed on sodium (salt) restricted diets may take
into account the sodium in their drinking water. Drinking water contributes only
a small fraction (less than 10 percent) to the overall sodium intake. Sodium
levels in drinking water can be increased by ion-exchange softeners at
water-treatment facilities or certain point-of-use treatment devices. If you
have been placed on a sodium-restricted diet, please inform your physician that
our water contains 80.1 ppm of sodium.
***Nitrate Infants below the age of 6 months who drink water containing
nitrate in excess of the MCL could become seriously ill and, if untreated, may
die. Symptoms include shortness of breath and blue baby syndrome.
****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. Bonita Springs Utilities is responsible for providing high
quality drinking water, but cannot control the variety of materials used in home
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
two 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
about lead in drinking water, testing methods, and steps you can take to
minimize exposure is available from the Safe Drinking Water Hotline at
1-800-426-4791 or at http://www.epa.gov/safewater/lead. |
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= Return to the 2007
Annual Report = |
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« 2007 Bonita Springs Utilities Water Quality Report |
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