Waters Protection Ordinance
(WPO)

¹ Per­sons re­spons­ible for en­ter­prises that dis­charge in­dus­tri­al waste wa­ter in­to pub­lic sew­ers and per­sons re­spons­ible for waste wa­ter treat­ment plants who dis­charge waste wa­ter in­to pub­lic sew­ers or in­to a body of wa­ter must re­port to and as in­struc­ted by the au­thor­it­ies:

a.

the amount of waste wa­ter dis­charged;

b.

the amounts and con­cen­tra­tions of sub­stances dis­charged which they must de­term­ine ac­cord­ing to Art­icle 13.

² Per­sons re­spons­ible for cent­ral waste wa­ter treat­ment plants must also re­port:

a.

im­port­ant op­er­at­ing data such as de­gree of ef­fect­ive­ness, quant­ity and char­ac­ter­ist­ics of sludge, type of sludge dis­pos­al, en­ergy con­sump­tionand op­er­at­ing costs;

b.

con­di­tions in the catch­ment area of the plant, such as con­nec­tionrate and the per­cent­age of non-pol­luted waste wa­ter with per­man­ent flow.