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Art. 9 Waste water of specific origin
1 Polluted waste water occurring outside public sewers for which neither discharge into waters, nor infiltration, nor use combined with farm manure (Art. 12 para. 4 WPA) is permitted must be collected in a cesspit which is regularly emptied with its contents being transferred to a central waste water treatment plant or facility for special treatment. 2 Waste water from processing farm manure, hydroponics and other horticultural methods must be used in an environmentally compatible manner and reused agriculturally or horticulturally according to the state of the art. 3 Waste water from mobile sanitation facilities must be collected and may be discharged into public sewers only by using equipment intended for this purpose. Excluded from this are sanitation facilities in:
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