Recycling Treated Municipal Wastewater for Industrial Water Use
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Recycling Treated Municipal Wastewater for Industrial Water Use

Recycling Treated Municipal Wastewater for Industrial Water Use Recycling Treated Municipal Wastewater for Industrial Water Use

archive.leg.state.mn.us
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17.08.2013 Views

Exhibit 1 California Water Recycling Criteria

Table A-1. 2000 California Water Recycling Criteria Type of Use Total Coliform Limits a Irrigation of fodder, fiber, and seed crops, orchards Treatment Required b and vineyards b , processed food crops c , nonfood-bearing trees, ornamental nursery stock d , and sod farms d ; flushing sanitary sewers None required Oxidation Irrigation of pasture for milking animals, landscape areas e , ornamental nursery stock and sod farms where public access is not restricted; landscape impoundments; industrial or commercial cooling water where no mist is created; nonstructural fire fighting; industrial boiler feed; soil compaction; dust control; cleaning roads, sidewalks, and outdoor areas Irrigation of food crops b ; restricted recreational impoundments; fish hatcheries Irrigation of food crops f and open access landscape areas g ; toilet and urinal flushing; industrial process water; decorative fountains; commercial laundries and car washes; snow-making; structural fire fighting; industrial or commercial cooling where mist is created Nonrestricted recreational impoundments ≤23/100 ml a ≤240/100 ml in more than one sample in any 30-day ≤2.2/100 ml a ≤23/100 ml in more than one sample in any 30-day period ≤2.2/100 ml a ≤23/100 ml in more than one sample in any 30-day period 240/100 ml (maximum) ≤2.2/100 ml a ≤23/100 ml in more than one sample in any 30-day period 240/100 ml (maximum) Groundwater recharge by spreading Case-by-case evaluation Oxidation Disinfection Oxidation Disinfection Oxidation Coagulation h Filtration i Disinfection Oxidation Coagulation Clarification j Filtration i Disinfection Case-by-case evaluation a Based on running 7-day median; daily sampling is required. b No contact between reclaimed water and edible portion of crop. c Food crops that undergo commercial pathogen-destroying prior to human consumption. d No irrigation for at least 14 days prior to harvesting, sale, or allowing public access. e Cemeteries, freeway landscaping, restricted access golf courses, and other controlled access areas. f Contact between reclaimed water and edible portion of crop; includes edible root crops. g Parks, playgrounds, schoolyards, residential landscaping, unrestricted access golf courses, and other uncontrolled access irrigation areas. h Not required if the turbidity of influent to the filters is continuously measured, does not exceed 5 NTU for more than 15 minutes and never exceeds 10 NTU, and there is capability to automatically activate chemical addition or divert wastewater if the filter influent turbidity exceeds 5 NTU for more than 15 minutes. i The turbidity after filtration through filter media cannot exceed an average of 2 nephelometric turbidity units (NTU) within any 24-hour period, 5 NTU more than 5 percent of the time within a 24-hour period, and 10 NTU at any time. The turbidity after filtration through a membrane process cannot exceed 0.2 NTU more than 5 percent of the time within any 24-hour period and 0.5 NTU at any time. j Not required if reclaimed water is monitored for enteric viruses, Giardia, and Cryptosporidium. Source: Adapted from State of California [2000a].

Exhibit 1<br />

Cali<strong>for</strong>nia <strong>Water</strong> <strong>Recycling</strong> Criteria

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