Section R18-11-309. Reclaimed Water Quality Standards for an Unlisted Type of Direct Reuse

A.       The Department may prescribe in an individual reclaimed water permit issued under 18 A.A.C. 9, Article 7, reclaimed water quality requirements for a type of direct reuse not listed in Table A. Before permitting a direct reuse of reclaimed water not listed in Table A, the Department shall, using its best professional judgment, determine and require compliance with reclaimed water quality requirements needed to protect public health and the environment.

B.       Department may determine that Class A+, A, B+, B, or C reclaimed water is appropriate for a new type of direct reuse.

C.       The Department shall consider the following factors when prescribing reclaimed water quality requirements for a new type of direct reuse:

1.        The risk to public health;

2.        The degree of public access to the site where the reclaimed water is reused and human exposure to the reclaimed water;

3.        The level of treatment necessary to ensure that the reclaimed water is aesthetically acceptable;

4.        The level of treatment necessary to prevent nuisance conditions;

5.        Specific water quality requirements for the intended type of direct reuse;

6.        The means of application of the reclaimed water;

7.        The degree of treatment necessary to avoid a violation of surface water quality standards or aquifer water quality standards;

8.        The potential for improper or unintended use of the reclaimed water;

9.        The reuse guidelines, criteria, or standards adopted or recommended by the U.S. Environmental Protection Agency or other federal or state agencies that apply to the new type of direct reuse; and

10.      Similar wastewater reclamation experience of reclaimed water providers in the United States.

Historical Note

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

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

Type of Direct Reuse Minimum Class of Reclaimed Water Required Irrigation of food crops A

Table A.         Minimum           Reclaimed           Water          Quality Requirements for Direct Reuse

Recreational impoundments	A
Residential landscape irrigation	A
Schoolground landscape irrigation	A
Open access landscape irrigation	A
Toilet and urinal flushing	A
Fire protection systems	A
Spray irrigation of an orchard or vineyard	A
Commercial closed loop air conditioning systems	A
Vehicle and equipment washing (does not include self-service vehicle washes)	A
Snowmaking	A
Surface irrigation of an orchard or vineyard	B
Golf course irrigation	B
Restricted access landscape irrigation	B
Landscape impoundment	B
Dust control	B
Soil compaction and similar construction activities	B
Pasture for milking animals	B
Livestock watering (dairy animals)	B
Concrete and cement mixing	B
Materials washing and sieving	B
Street cleaning	B
Pasture for non-dairy animals	C
Livestock watering (non-dairy animals)	C
Irrigation of sod farms	C
Irrigation of fiber, seed, forage, and similar crops	C
Silviculture	C

Note: Nothing in this Article prevents a wastewater treatment plant from using a higher quality reclaimed water for a type of direct reuse than the minimum class of reclaimed water listed in Table A. For example, a wastewater treatment plant may provide Class A reclaimed water for a type of direct reuse where Class B or Class C reclaimed water is acceptable.

Historical Note

New Table adopted by final rulemaking at 7 A.A.R. 870, effective January 22, 2001 (Supp. 01-1).