ANSI AWWA G485:2018 pdf download.Direct Potable Reuse Program Operation and Management.
ANSI AWWA G485 describes the critical requirements for the effective operation and management of a direct potable reuse (DPR) water program.
Sec. 1.2 Purpose
The purpose of ANSI AWWA G485 is to define the critical requirements for the effective operation and management of a DPR water program.
Sec. 1.3 Application
ANSI AWWA G485 can he referenced in the evaluation of a DPR program operation and management. The stipulations of ANSI AWWA G485 apply when this document has been referenced and only to the operation and management of a DPR program.
SECTION 2: REFERENCES
ANSI AWWA G485 references the following documents. In their latest editions, they form a part of ANSI AWWA G485 to the extent specified within the standard. In any case of conflict, the requirements of this standard shall prevail.
SECTION 3: DEFINITIONS
The following definitions shall apply in this standard:
1. Advanced water treatment: A general term used to describe the overall process and procedures involved in treatment of wastewater beyond secondary treatment for direct potable reuse applications.
2. Concentrate: Concentrated liquid waste stream produced by a membrane treatment process containing elevated concentrations of total dissolved solids and other constituents.
3. Critical control points (CCPs): Critical control points are points in the treatment process that are specifIcally designed to reduce, prevent, or eliminate a human health hazard and for which monitoring and controls exist to ensure the proper performance of that process function.
4. Customer: The end user of advance treated water.
5. Directpotabie reuse (DPR). Advanced treated water as part of the potable water suppiy without the use of an environmental buffer and with or without retention in an engineered storage buffer.
6. Engineered buffer: A storage facility that is used to provide retention time for responses before advanced treated water is introduced into the drinking water system.
7. Environmental buJfrr: A water body, such as a groundwater aquifer or a surface water reservoir, lake, or river, into which advanced treated water is introduced before being withdrawn for treatment for potable reuse.
8. Indirect potable reuse (IPR): Augmentation of a drinking water source (surface or groundwater) with treated wastewater followed by an environmental buffer that becomes a source for drinking water.
9. Nonpotable reuse. Reclaimed water that is not used for drinking but is safe to use for irrigation, industrial uses, or other nondrinking water purposes.
10. Potable water: Water that meets state or provincial and federal drinking water regulations and is satisfactory for human consumption.
11. Pretreatment: The reduction or elimination of pollutants in wastewater before discharge to the collection system.ANSI AWWA G485 pdf download.