TM 5-813-3/AFM 88-10, Vol 3
tions of chlorinated organic compounds, and if all
other methods for reducing TTHM's have been ex-
hausted, such as moving the point of chlorination,
aeration, and special coagulant (as shown in table 2-3
for chloroform which is the main constituent of
TTHMs in many cases) and if an alternate raw water
source, such as a ground water source, is not available,
an alternative disinfectant must be considered. Any
alternate disinfectant system installed as the primary
means of water disinfection shall have chlorination fa-
cilities available and operative for stand-by use. Five
alternative disinfectants are discussed below; ozone,
chlorine dioxide, chloramines, ultraviolet (UV) radi-
ation, and UV and Ozone combined. While chlorine is
the least costly disinfectant, considering dosage and
energy consumption basis. However alternate disin-
fectants are not significantly more expensive.
(6) Safety precautions for chlorination. The
AWWA manual "Safety Practice for Water Utilities"
contains safety recommendations regarding the use of
chlorine. These recommendations shall be followed at
all military water treatment facilities. Further discus-
sion on safe operation of chlorination facilities for
Army installations are contained in TB MED 576, ap-
pendix L.
a disinfectant causes unacceptably large concentra-
2-16
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