Your system must keep several types of records based on the requirements of subpart T, in addition to recordkeeping requirements under Sec. 141.75. The following table describes the necessary records, the length of time these records must be kept, and for which requirement the records pertain. Your system is required to maintain records described in this table, if it is subject to the specific requirement shown in the first column. ------------------------------------------------------------------------
Duration of time
Corresponding requirement Description of records must be
(a) Individual Filter Turbidity Results of At least 3 years.
Requirements. individual filter(Sec. Sec. 141.560-141.564).. monitoring.(b) Disinfection Profiling...... Results of Profile Indefinitely.(Sec. Sec. 141.530-141.536).. (including raw
data and analysis).(c) Disinfection Benchmarking... Benchmark Indefinitely.(Sec. Sec. 141.540-141.544).. (including raw
data and analysis).------------------------------------------------------------------------