Section R18-11-305. Class B+ Reclaimed Water

A.       Class B+ reclaimed water is wastewater that has undergone secondary treatment, nitrogen removal treatment, and disinfection.

B.       An owner of a facility shall ensure that:

1.        Class B+ reclaimed water meets the following criteria after disinfection  treatment and  before discharge to a reclaimed water distribution system:

a.         The concentration of fecal coliform organisms in four of the last seven daily reclaimed water samples is less than 200 / 100 ml.

b.        The single sample maximum concentration of fecal coliform organisms in a reclaimed water sample is less than 800 / 100 ml.

2.        The 5-sample geometric mean concentration of total nitrogen in a reclaimed water sample is less than 10 mg / L.

C.       Class B+ reclaimed water is not required for a type of direct reuse. A person may use Class B+ reclaimed water for a type of direct reuse listed as Class B or Class C in Table A. A person shall not use Class B+ reclaimed water for a type of direct reuse listed as Class A in Table A.

Historical Note

New Section adopted by final rulemaking at 7 A.A.R.

870, effective January 22, 2001 (Supp. 01-1).