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2006 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, 2006. 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 2004 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 1 sample in 2006 (< 2% of any monthly
samples |
1
sample in July |
Naturally present in the environment |
No |
| Inorganic
Compounds |
| Barium |
2,000 ppb |
2,000 ppb |
6
ppb |
0/07/06 |
Discharge of drilling wastes; discharge from
metal refineries; erosion of natural deposits |
No |
| Fluoride |
4
ppm |
4
ppm |
0.5
ppm |
0/29/05 |
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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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 |
14.7 ppb |
10.3 - 23.3 ppb |
Quarterly, reduced to
annual sampling |
By-product of
drinking water chlorination |
No |
| TTHM (Total
Trihalomethanes) (ppb) |
0 ppb |
80 ppb |
23.4 ppb |
14.4 - 31.2 ppb |
Quarterly, reduced to
annual sampling |
By-product of
drinking water chlorination |
No |
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MRDLG |
MRDL |
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| Chloramines (ppm) |
4 ppm |
4 ppm |
3.6 ppm |
0.3 - 5.2 ppm |
1/5 thru 12/5 (except
5/05) |
Water additive |
No |
| Chlorine |
4 ppm |
4 ppm |
1.9 ppm |
0.3 - 3.5 ppm |
5/05 |
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 2006 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. |
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Annual Report = |
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