Idaho Admin. Code r. 58.01.17.602

Current through September 2, 2024

Section 58.01.17.602 - MUNICIPAL RECYCLED WATER: CLASSIFICATION AND USES TABLES

01.Municipal Recycled Water -- Classification Tables. The tables summarize treatment for municipal recycled water as outlined in Section 601. If discrepancies exist between Sections 601 and 602, follow Section 601.

		Class A	Class B	Class C	Class D	Class E
Oxidized		Yes	Yes	Yes	Yes	No
Filtered		Yes	Yes	No	No	No
Disinfected		Yes	Yes	Yes	Yes	No
Total coliform (organisms/100 milliliters)	Median results for last x-days for which analysis have been completed	2.2 7-day median	2.2 7-day median	23 5-day median	230 3-day median	No limit
	Maximum in any sample	23	23	230	2300	No limit
	Monitoring frequency	Daily	Daily	Once weekly	Once monthly

		Class A	Class B
Turbidity (NTU)	24-hour - mean, Not to exceed	Granular or cloth media - 2 Membrane filter - 0.2	Granular or cloth media - 5
	Maximum, in any sample	Granular or cloth media - 5 Membrane filter - 0.5	Granular or cloth media - 10
	Monitoring frequency	Continuous	Continuous
Disinfection contact time requirements		CT of 450 mg-min/L with 90 minutes of modal contact time, or Disinfection to 5-log inactivation of virus	Total chlorine not less than 1 mg/L after 30 minute contact time, or Comparable alternate process
Maximum total nitrogen (mg/L) Monthly arithmetic mean, from weekly composite samples not to exceed		Ground water recharge - 10 Residential irrigation and other non-recharge uses - 30
BOD5 (mg/L) Monthly arithmetic mean, from weekly composite samples not to exceed		Ground water recharge - 5 Residential irrigation and other non-recharge uses - 10
pH Daily grab samples or continuous monitoring		Between 6.0 and 9.0

02.Municipal Recycled Water - Uses Beneficial Reuse. This table summarizes municipal recycled water uses for specific classifications. Other uses not listed here may be considered on a case-by-case basis and approved by the Department.

Recycled Water Beneficial Reuse	Class A	Class B	Class C	Class D	Class E
Fodder, fiber crops	Yes	Yes	Yes	Yes	Yes
Commercial timber, firewood	Yes	Yes	Yes	Yes	Yes
Processed food crops or "food crops that must undergo commercial pathogen-destroying processing before being consumed by humans"	Yes	Yes	Yes	Yes	No
Ornamental nursery stock, or Christmas trees	Yes	Yes	Yes	Yes	No
Sod and seed crops not intended for human ingestion	Yes	Yes	Yes	Yes	No
Pasture for animals not producing milk for human consumption	Yes	Yes	Yes	Yes	No
Pasture for animals producing milk for human consumption	Yes	Yes	Yes	No	No
Orchards and vineyards irrigation during the fruiting season, if no fruit harvested for raw use comes in contact with the irrigation water or ground, or will only contact the inedible portion of raw food crops	Yes	Yes	Yes	No	No
Highway medians and roadside vegetation irrigation on sides	Yes	Yes	Yes	No	No
Cemetery irrigation	Yes	Yes	Yes	No	No
Parks, playgrounds, and school yards during periods of non-use	Yes	Yes	No	No	No
Parks, playgrounds, and school yards during periods of use	Yes	No	No	No	No
Golf courses	Yes	Yes	No	No	No
Food crops, including all edible food crops	Yes	Yes	No	No	No
Residential landscape	Yes	No	No	No	No
Dust suppression at construction sites and control on roads and streets	Yes	Yes	Yes	No	No
Toilet flushing at industrial and commercial sites, when only trained maintenance personnel have access to plumbing for repairs	Yes	Yes	Yes	No	No
Nonstructural fire fighting	Yes	Yes	Yes	No	No
Cleaning roads, sidewalks, and outdoor work areas	Yes	Yes	Yes	No	No
Backfill consolidation around non-potable piping	Yes	Yes	Yes	No	No
Soil compaction	Yes	Yes	Yes	No	No
Commercial campus irrigation	Yes	Yes	No	No	No
Fire suppression	Yes	Yes	No	No	No
Snowmaking for winter parks, resorts	Yes	No	No	No	No
Commercial laundries	Yes	No	No	No	No
Ground water recharge through surface application	Yes	No	No	No	No
Subsurface distribution	Yes	Yes	Yes	Yes	No

Idaho Admin. Code r. 58.01.17.602

Effective April 6, 2023