No.
of
CIUs
No.
of
POTWs
with
this
range
of
CIUs
Percentage
of
POTWs
with
this
range
of
CIUs
0
221
15%
1
­
5
823
58%
6
­
10
188
13%
11
­
15
68
5%
16­
25
54
4%
26­
50
40
3%
51­
100
23
2%
100+
10
1%
1427
100%

Number
of
CIUs
per
Pretreatment
Program
0
100
200
300
400
500
600
700
800
900
0
1
­
5
6
­
10
11
­
15
16­
25
26­
50
51­

100
100+

Number
of
CIUs
per
program
Number
of
POTWs
"
These
results
are
based
on
a
February
2003
data
pull,
with
some
corrections
by
the
Regions.
They
include
only
POTWs
identified
as
having
a
Pretreatment
program
for
which
PCI
or
other
Regional
were
available
on
the
number
of
CIUs.
This
includes
1427
POTWs
(
by
NPDES
permit
number,
not
by
plant)."

Data
Source:
EPA's
Permit
Compliance
System
("
PCS")
database.
