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