Schedule 1 CRITERIA FOR CLASSIFICATION OF WATERS

The limits set out below are maxima

No. in Annex II to 75/440/EEC	Parameters	Units		Limits
			DW1	DW2	DW3
(O) See regulation 4(1)(b).
* See regulation 4(1)(d).
2	Coloration (after simple filtration)	mg/1 Pt Scale	20^f1	100	200
4	Temperature	°C	25	25	25
7^f2	Nitrates	mg/l NO₃	50	50	50
8	Fluorides	mg/l F	1.5
10	Dissolved iron	mg/l Fe	0.3	2
12	Copper	mg/l Cu	0.05
13	Zinc	mg/l Zn	3	5	5
19	Arsenic	mg/l As	0.05	0.05	0.1
20	Cadmium	mg/l Cd	0.005	0.005	0.005
21	Total chromium	mg/l Cr	0.05	0.05	0.05
22	Lead	mg/l Pb	0.05	0.05	0.05
23	Selenium	mg/l Se	0.01	0.01	0.01
24	Mercury	mg/l Hg	0.001	0.001	0.001
25	Barium	mg/l Ba	0.1	1	1
26	Cyanide	mg/l CN	0.05	0.05	0.05
27	Sulphates	mg/l SO₄	250	250	250
31	Phenols (phenol index) paranitraniline 4-aminoantipyrine	mg/l C₆H₅OH	0.001	0.005	0.1
32	Dissolved or emulsified hydrocarbons	mg/l	0.05	0.2	1
33	Polycyclic aromatic hydrocarbons	mg/l	0.0002	0.0002	0.001
34	Total pesticides (parathion, hexachlorocyclohexane, dieldrin)	mg/l	0.001	0.0025	0.005
39	Ammonium	mg/l NH₄		1.5	4

Annotations

f1

(O)

See regulation 4(1)(b).

f2

See regulation 4(1)(d).