Eastern Report - Toho Water Authority

Bay Lake Estates Water System (PWS ID# 349-0090)
5
INORGANIC CONTAMINANTS
Contaminant
and Unit of
Measurement
Dates of
sampling
(mo/yr)
MCL
Violation
Y/N
Level
Detected
Range of
Results
MCLG MCL Likely Source of Contamination
Barium (ppm) 3/12 N 0.0051 N/A 2 2
Fluoride (ppm) 3/12 N 0.19 N/A 4 4.0
Nitrate (ppm) 2/12, 3/12 N 0.049 0.046-0.049 10 10
Discharge of drilling wastes; discharge from metal
refineries; erosion of natural deposits
Erosion of natural deposits; discharge from fertilizer
and aluminum factories. Water additive which
promotes strong teeth when at the optimum level of
0.7 ppm
Runoff from fertilizer use; leaching from septic tanks,
sewage; erosion of natural deposits
Sodium (ppm) 3/12 N 24.4 N/A N/A 160 Salt water intrusion, leaching from soil
Synthetic Organic Contaminants including Pesticides and Herbicides
Contaminant and Unit
of Measurement
Dibromochloropropane
(DBCP) (nanograms/l)
Stage 1 Disinfectants and Disinfection By-Products
Disinfectant or
Contaminant
and Unit of
Measurement
Dates of
sampling
(mo/yr)
MCL or
MRDL
Violation
Y/N
Level
Detected
Range of
Results
MCLG or
MRDLG
MCL or
MRDL
Likely Source of Contamination
Chlorine (ppm) 1/12-12/12 N 1.5 (RAA) 0.3-2.2 MRDLG = 4 MRDL = 4.0 Water additive used to control microbes
Haloacetic Acids
(five) [HAA5] (ppb)
Total
Trihalomethanes
[TTHM] (ppb)
Dates of
sampling
(mo/yr)
4/12, 9/12,
10/12
MCL
Violation
Y/N
Level
Detected
Range of
Results
N 55 ND-55 0 200
MCLG MCL Likely Source of Contamination
Runoff/leaching from soil fumigant used on
soybeans, cotton, pineapples, and orchards
7/12 N 47.7 N/A N/A MCL = 60 By-product of drinking water disinfection
7/12 N 74.4 N/A N/A MCL = 80 By-product of drinking water disinfection