83 Ill. Adm. Code 600.310
Test and Allowable Error
Section 600
Section 600.310 Test and
Allowable Error
a) The accuracy of a water meter shall be tested by comparing the
actual amount of water passing through it with the amount indicated on the
dial.
b) The test shall be conducted in accordance with the standards
for testing Cold Water Meters as prescribed by the American Water Works
Association (AWWA C705-60) with quantities and flows for positive displacement
meters as follows:
TEST
FLOWS (G.P.M.) & QUANTITY
MINIMUM
INTERMEDIATE
MAXIMUM
Size
of
Flow
QUANTITY
FLOW
QUANTITY
FLOW
QUANTITY
meter
G.P.M.
Gal.
Cu.Ft.
G.P.M.
Gal.
Cu.Ft.
G.P.M.
Gal.
Cu.Ft.
⅝"
¼
10
1
2
10
1
15
100
10
¾"
½
10
1
3
10
1
25
100
10
1"
¾
10
1
4
10
1
40
100
10
1½"
1½
100
10
8
100
10
80
1000
100
2"
2
100
10
15
100
10
120
1000
100
3"
4
100
10
20
100
10
250
1000
100
4"
7
100
10
40
100
10
350
1000
100
6"
12
100
10
60
100
10
700
1000
100
No meters shall
be placed in service when the accuracy is different than follows:
NEW
METERS
REPAIRED
METERS
MINIMUM RANGE
95-101.5%
90-101.5%
INTERMEDIATE RANGE
98.5-101.5%
98.5-101.5%
MAXIMUM RANGE
98.5-101.5%
98.5-101.5%
c) The utility may make such additional tests as it may deem
necessary but in a manner that will not unreasonably inconvenience the
customer.