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Waters Protection Ordinance
(WPO)

of 28 October 1998 (Status as of 1 February 2023)

Art. 20 Inspection and obligation to report

1 Per­sons re­spons­ible for waste wa­ter treat­ment plants must en­sure that the qual­ity of sludge is in­spec­ted with­in the dead­lines im­posed by ex­perts.

2 ...15

3 ...16

15 Re­pealed by No I of the O of 18 Oct. 2006, with ef­fect from 1 Jan. 2007 (AS 2006 4291).

16 Re­pealed by No I of the O of 4 Nov. 2015, with ef­fect from 1 Jan. 2016 (AS 2015 4791).