This is an example of one city's program. The City of Sunnyvale, CA,
Industrial Pretreatment Program
The following is a recap of Section 12.12.120 of the City of Sunnyvale's
Sewer Ordinance for your information:
"Limitations on Wastewater Strength"
(a) No person shall discharge wastewater containing in excess of:
Max. Total Concentration
Allowable in Milligrams
Toxicant
Per Liter
Antimony
1.0 mg/L
Arsenic
0.3
mg/L
Barium
1.0 mg/L
Beryllium
0.5 mg/L
Cadmium
0.1 mg/L
Chlorinated Hydrocarbons used for control of
plants, insects, etc.
0.02 mg/L
Chromium, total
1.7 mg/L
Cobalt
1.0 mg/L
Copper
2.0 mg/L
Cresols
2.0 mg/L
Cyanides
0.5 mg/L
Lead
0.5 mg/L
Mercury
0.01 mg/L
Nickel
0.5 mg/L
Phenol
1.0 mg/L
Selenium
2.0 mg/L
Silver
0.2 mg/L
Total Toxic Organics*
1.0 mg/L
Zinc
1.48 mg/L
(b) No person shall discharge any wastewater:
(1) having a temperature higher than 140º F.
(2) any wastewater or waste which contains more than 100
parts per million (PPM), by weight, of oil or grease of animal or vegetable origin; or
which contains grease or oil or other substances that will solidify or become discernibly
viscous at temperatures between 32º to 140º F.
*Total toxic Organics, as defined under 40 CFR Part 413.02, but
excluding phenol.
ECOCYCLE Economical
Recycling 
![[Under Construction]](../images/undercon.gif){kind=small}