Small Systems Guide To Safe Drinking Water Act Regulations - U.s. Environmental Protection Agency - 2003 Page 23
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35Monitoring
Treatment
Management Practices
Samples must be taken from
Corrosion control treatment is required
This rule does not directly
consumers’ taps. The number of
unless a system is below the action
affect a system’s management
samples required during each 6-
level for two consecutive 6-month
practices. However, manage
month period depends on system
periods. Source water monitoring and
ment practices may be affected
size. If monitoring results show that
treatment are also required if a system
by the rule's public education
the lead or copper action level is
exceeds an action level due to
provisions and practices
exceeded, the system must imple
occurence in the source water. If a
associated with proper
ment corrosion control treatment. If
system has lead service lines, replace
monitoring.
the system is below the action level
ment is required if the system still
for two consecutive periods, it will be
cannot meet the action level even after
put on a reduced monitoring sched
installing corrosion control or source
ule.
water treatment.
Depending on the type of disinfec
Subpart H systems that use conven
This rule does not directly
tion used—chlorine, chloramines,
tional filtration must remove specified
affect a system's management
chlorine dioxide, or ozone—systems
percentages of TOC using either
practices. However, manage
may be required to monitor for
enhanced coagulation or enhanced
ment practices may be affected
different disinfectants and DBPs.
softening. The removal requirement
by the need to balance disin
Reduced monitoring is possible if a
depends on the TOC concentration in
fection needs with byproduct
system meets certain requirements.
and alkalinity of the source water.
formation.
For systems that use surface water
or GWUDI (Subpart H systems) and
use conventional treatment, monthly
samples are required for total
organic carbon (TOC) and alkalinity.
This rule has no monitoring require
The FBRR requires a system to return
This rule does not directly
ments, but the FBRR requires that a
all regulated recycled water (spent filter
affect a system's management
system meet the following dead-
backwash water, thickener supernatant,
practices. However, manage
lines:
and liquids from dewatering pro
ment practices may need to be
cesses) to a point in the treatment plant
adjusted along with any
By December 8, 2003: Submit to the
where it will pass through all steps of
change in treatment that is
State a plant schematic and recycle
treatment or treatment processes
required.
flow/plant flow information.
before entering the distribution system.
(Note: Systems can request approval
By June 8, 2004: Retain additional
from the State to use alternate loca
information on recycle practices on
tions.)
file. By this date systems must also
be recycling regulated streams to
correct locations or have an ap
proved alternate recycle return
location.
By June 8, 2006: Any capital im
provements that were needed for the
return recycle location must be
completed.
19
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