35 Ill. Adm. Code 370.1080
Sampling and Testing
Section 370
Section 370.1080 Sampling
and Testing
a) Facilities shall be included for collecting samples, as
monitoring requirements warrant, of the disinfected effluent.
b) Where chlorine disinfection is used, equipment shall be
provided for measuring chlorine residual using accepted test procedures.
c) Where required by the Agency, equipment shall also be provided
for measuring fecal coliform using accepted test procedures.