Schedule Criteria for the classification of waters

The limits set out below are maxima

(1)	(2)		(3)	(4)	(5)
No. in Annex II to 75/440/EEC	Parameters		DW1	DW2	DW3
Note (1) The value is an upper limit set in relation to the mean annual temperature (high and low).
2	Coloration (after simple filtration)	mg/1 Pt Scale	20	100	200
4	Temperature	°C	25	25	25
7	Nitrates	mg/1 NO³	50	50	50
8(1)	Fluorides	mg/1 F	1.5
10	Dissolved iron	mg/1 Fe	0.3	2
12	Copper	mg/1 Cu	0.05
13	Zinc	mg/1 Zn	3	5	5
19	Arsenic	mg/1 As	0.05	0.05	0.1
20	Cadmium	mg/1 Cd	0.005	0.005	0.005
21	Total chromium	mg/1 Cr	0.05	0.05	0.05
22	Lead	mg/1 Pb	0.05	0.05	0.05
23	Selenium	mg/1 Se	0.01	0.01	0.01
24	Mercury	mg/1 Hg	0.001	0.001	0.001
25	Barium	mg/1 Ba	0.1	1	1
26	Cyanide	mg/1 Cn	0.05	0.05	0.05
27	Sulphates	mg/1 SO⁴	250	250	250
31	Phenols (phenol index) paranitraniline 4 aminoantipyrine	mg/1 C⁶H⁵OH	0.001	0.005	0.1
32	Dissolved or emulsified hydrocarbons (after extraction by petroleum ether)	mg/1	0.05	0.2	1
33	Polycyclic aromatic hydrocarbons	mg/1	0.0002	0.0002	0.001
34	Total pesticides (parathion, BHC, dieldrin)	mg/1	0.001	0.0025	0.005
39	Ammonia	mg/1 NH⁴		1.5	4