IMPORTANT REMINDER: Our city has no wastewater treatment, under which we must consider the target as the water bodies directly.

Decree No. 8468 of 8/9/1976, the State of São Paulo

Article 18 - The effluents from any pollution source can only be launched, directly or indirectly, in water samples, provided they meet the following requirements:
I - pH 5.0 (five point) and 9.0 (nine point);
II - the temperature below 40 degrees C (forty degrees Celsius);
III - sedimentary material up to 1.0 ml / l (one milliliter per liter) in one hour test on "Imhoff cone";
IV - substances soluble in hexane to 100 mg / l (one hundred milligrams per liter);
V - BOD 5 days, 20 ° C maximum of 60 mg / l (sixty milligrams per liter). This limit can be exceeded only in the case of effluent treatment system of wastewater to reduce the pollution load in terms of BOD 5 days, 20 ° C in the dump at least 80% (eighty percent);
VI - Maximum concentrations of the following parameters:

a) Arsenic - 0.2 mg / l (two tenths of a milligram per liter)
b) Barium - 5.0 mg / l (five milligrams per liter);
c) Boron - 5.0 mg / l (five milligrams per liter);
d) Cadmium - 0.2 mg / l (two tenths of a milligram per liter);
e) Lead - 0.5 mg / l (five-tenths of a milligram per liter);
f) Cyanide - 0.2 mg / l (two tenths of a milligram per liter);
g) Copper - 1.0 mg / L (one milligram per liter);
h) Hexavalent Chromium - 0.1 mg / l (a tenth of a milligram per liter);
i) Total Chromium - 5.0 mg / l (five milligrams per liter);
j) Tin - 4.0 mg / l (four milligrams per liter);
k) Phenol - 0.5 mg / l (five-tenths of a milligram per liter);
l) Soluble Iron (Fe ² +) - 15.0 mg / l (fifteen milligrams per liter)
m) Fluoride - 10.0 mg / l (ten milligrams per liter)
n) Soluble Manganese (Mn ² +) - 1.0 mg / L (one milligram per liter);
o) Mercury - 0.01 mg / l (one hundredth of a milligram per liter);
p) Nickel - 2.0 mg / l (two milligrams per liter);
q) Silver - 0.02 mg / l (two hundredths of a milligram per liter);
r) Selenium - 0.02 mg / l (two hundredths of a milligram per liter);
s) Zinc - 5.0 mg / l (five milligrams per liter);
VII - other substances potentially harmful to peak concentrations to be determined for each case, the criterion of CETESB;
VIII - the system for continuous release of 24 (twenty four) hours per day, with maximum variation of flow rate of 50% (fifty percent) of the average hourly flow.
§ 1 - In addition to obeying the limits of this article, the effluent can not give the receiving body characteristics at odds with the framework of the same, in the Classification of Waters.
§ 2 - If the source of pollution-generating individually different dumps or emissions, the limits contained in this regulation shall apply to each of these, or all after mixing the discretion of CETESB.
§ 3 - In case of effluent over a potentially harmful substance, CETESB can reduce their individual limits, in proportion to the number of substances.

Source: CETESB