Recycling Treated Municipal Wastewater for Industrial Water Use
Recycling Treated Municipal Wastewater for Industrial Water Use Recycling Treated Municipal Wastewater for Industrial Water Use
Exhibit A: California Water Recycling Criteria Recycling Treated Municipal Wastewater for Industrial Water Use Exhibit A: California Water Recycling Criteria Type of Use Irrigation of fodder, fiber, and seed crops, orchards b and vineyards b , processed food crops c , nonfood-bearing trees, ornamental nursery stock d , and sod farms d ; flushing sanitary sewers 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 Total Coliform Limits a Treatment Required None required Oxidation ≤23/100 ml a ≤240/100 ml in more than one sample in any 30-day Nonrestricted recreational impoundments ≤2.2/100 ml a ≤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) ≤23/100 ml in more than one sample in any 30-day period 240/100 ml (maximum) Oxidation Disinfection Oxidation Disinfection Oxidation Coagulation h Filtration i Disinfection Oxidation Coagulation Clarification j Filtration i Disinfection Groundwater recharge by spreading Case-by-case evaluation 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. 2000. Water Recycling Criteria. Title 22, Division 4, Chapter 3, California Code of Regulations. California Department of Health Services, Drinking Water Program, Sacramento, California. Metropolitan Council Environmental Services 65
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Exhibit A: Cali<strong>for</strong>nia <strong>Water</strong> <strong>Recycling</strong> Criteria<br />
<strong>Recycling</strong> <strong>Treated</strong> <strong>Municipal</strong> <strong>Wastewater</strong> <strong>for</strong> <strong>Industrial</strong> <strong>Water</strong> <strong>Use</strong><br />
Exhibit A: Cali<strong>for</strong>nia <strong>Water</strong> <strong>Recycling</strong> Criteria<br />
Type of <strong>Use</strong><br />
Irrigation of fodder, fiber, and seed crops, orchards b and<br />
vineyards b , processed food crops c , nonfood-bearing<br />
trees, ornamental nursery stock d , and sod farms d ;<br />
flushing sanitary sewers<br />
Irrigation of pasture <strong>for</strong> milking animals, landscape<br />
areas e , ornamental nursery stock and sod farms where<br />
public access is not restricted; landscape impoundments;<br />
industrial or commercial cooling water where no mist is<br />
created; nonstructural fire fighting; industrial boiler feed;<br />
soil compaction; dust control; cleaning roads, sidewalks,<br />
and outdoor areas<br />
Irrigation of food crops b ; restricted recreational<br />
impoundments; fish hatcheries<br />
Irrigation of food crops f and open access landscape<br />
areas g ; toilet and urinal flushing; industrial process water;<br />
decorative fountains; commercial laundries and car<br />
washes; snow-making; structural fire fighting; industrial<br />
or commercial cooling where mist is created<br />
Total Coli<strong>for</strong>m<br />
Limits a<br />
Treatment<br />
Required<br />
None required Oxidation<br />
≤23/100 ml a<br />
≤240/100 ml in more than<br />
one sample in any 30-day<br />
Nonrestricted recreational impoundments ≤2.2/100 ml a<br />
≤2.2/100 ml a<br />
≤23/100 ml in more than one<br />
sample in any 30-day period<br />
≤2.2/100 ml a<br />
≤23/100 ml in more than one<br />
sample in any 30-day period<br />
240/100 ml (maximum)<br />
≤23/100 ml in more than one<br />
sample in any 30-day period<br />
240/100 ml (maximum)<br />
Oxidation<br />
Disinfection<br />
Oxidation<br />
Disinfection<br />
Oxidation<br />
Coagulation h<br />
Filtration i<br />
Disinfection<br />
Oxidation<br />
Coagulation<br />
Clarification j<br />
Filtration i<br />
Disinfection<br />
Groundwater recharge by spreading Case-by-case evaluation Case-by-case<br />
evaluation<br />
a<br />
Based on running 7-day median; daily sampling is required.<br />
b<br />
No contact between reclaimed water and edible portion of crop.<br />
c<br />
Food crops that undergo commercial pathogen-destroying prior to human consumption.<br />
d<br />
No irrigation <strong>for</strong> at least 14 days prior to harvesting, sale, or allowing public access.<br />
e<br />
Cemeteries, freeway landscaping, restricted access golf courses, and other controlled access areas.<br />
f<br />
Contact between reclaimed water and edible portion of crop; includes edible root crops.<br />
g<br />
Parks, playgrounds, schoolyards, residential landscaping, unrestricted access golf courses, and other uncontrolled access<br />
irrigation areas.<br />
h<br />
Not required if the turbidity of influent to the filters is continuously measured, does not exceed 5 NTU <strong>for</strong> more than 15 minutes<br />
and never exceeds 10 NTU, and there is capability to automatically activate chemical addition or divert wastewater if the filter<br />
influent turbidity exceeds 5 NTU <strong>for</strong> more than 15 minutes.<br />
i<br />
The turbidity after filtration through filter media cannot exceed an average of 2 nephelometric turbidity units (NTU) within any<br />
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<br />
filtration through a membrane process cannot exceed 0.2 NTU more than 5 percent of the time within any 24-hour period and<br />
0.5 NTU at any time.<br />
j<br />
Not required if reclaimed water is monitored <strong>for</strong> enteric viruses, Giardia, and Cryptosporidium.<br />
Source: Adapted from State of Cali<strong>for</strong>nia. 2000. <strong>Water</strong> <strong>Recycling</strong> Criteria. Title 22, Division 4, Chapter 3, Cali<strong>for</strong>nia Code of<br />
Regulations. Cali<strong>for</strong>nia Department of Health Services, Drinking <strong>Water</strong> Program, Sacramento, Cali<strong>for</strong>nia.<br />
Metropolitan Council Environmental Services 65