The Water Supply (Water Quality) (Scotland) Regulations 2001

TABLE B S Chemical parameters

Part I: Directive requirements

Notes: {s002} The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification. {s003} See also regulation 6(6). {s004} See also regulation 4(2)(d). {s005} See the definition of “pesticides and related products" in regulation 2. {s006} The parametric value applies to each individual pesticide. {s007} Pesticides: Total means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring procedure. {s008} PAH means Polycyclic Aromatic Hydrocarbons, the specified compounds are: benzo(b)fluoranthene benzo(k)fluoranthene benzo(ghi)perylene indeno(1,2,3-cd)pyrene. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. {s009} The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. {s010} “THM: Total" means total Trihalomethanes, the specified compounds are: – chloroform – bromoform – dibromochloromethane – bromodichloromethane. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.
Item	Parameters	Concentration or Value (maximum)	Units of Measurement	Point of compliance
1.	Acrylamide	0.10	μg/l	{s002}
2.	Antimony	5.0	μgSb/l	consumers’ taps
3.	Arsenic	10	μgAs/l	consumers’ taps
4.	Benzene	1.0	μg/l	consumers’ taps
5.	Benzo(a)pyrene	0.010	μg/l	consumers’ taps
6.	Boron	1.0	mgB/l	consumers’ taps
7.	Bromate	10	μgBrO3/l	consumers’ taps
8.	Cadmium	5.0	μgCd/l	consumers’ taps
9.	Chromium	50	μgCr/l	consumers’ taps
10.	Copper {s003}	2.0	mg Cu/l	consumers’ taps
11.	Cyanide	50	μgCN/l	consumers’ taps
12.	1,2 dichloroethane	3.0	μg/l	consumers’ taps
13.	Epichlorohydrin	0.10	μg/l	{s002}
14.	Fluoride	1.5	mg F/l	consumers’ taps
15.	Lead {s003}	(a) 25, from 25/12/03 until 24/12/13	μgPb/l	consumers’ taps
		(b) 10, from 25/12/13	μgPb/l	consumers’ taps
16.	Mercury	1.0	μgHg/l	consumers’ taps
17.	Nickel {s003}	20	μgNi/l	consumers’ taps
18.	Nitrate {s004}	50	mgNO3/l	consumers’ taps
19.	Nitrite {s004}	0.50	mgNO2/l	consumers’ taps
		0.10	mgNO2/l	treatment works
20.	Pesticides {s005} {s006} –
	Aldrin	0.030	μg/l	consumers’ taps
	Dieldrin	0.030	μg/l	consumers’ taps
	Heptachlor	0.030	μg/l	consumers’ taps
	Heptachlor epoxide	0.030	μg/l	consumers’ taps
	other pesticides	0.030	μg/l	consumers’ taps
21.	Pesticides: Total {s007}	0.50	μg/l	consumers’ taps
22.	PAH {s008}	0.10	μg/l	consumers’ taps
23.	Selenium	10	μgSe/l	consumers’ taps
24.	Tetrachloroethene & Trichloroethene {s009}	10	μg/l	consumers’ taps
25.	THM: Total {s010}	100	μg/l	consumers’ taps
26.	Vinyl chloride	0.50	μg/l	{s002}

Part II: National requirements

Item	Parameters	Concentration or Value (maximum unless otherwise stated)	Units of Measurement	Point of compliance
1.	Aluminium	200	μg Al/l	consumers’ taps
2.	Colour	20	mg/l Pt/Co	consumers’ taps
3.	Hydrogen ion	9.5	pH value	consumers’ taps
		6.5 (minimum)
4.	Iron	200	μgFe/l	consumers’ taps
5.	Manganese	50	μgMn/l	consumers’ taps
6.	Odour	3 at 25°C	Dilution number	consumers’ taps
7.	Sodium	200	mgNa/l	consumers’ taps
8.	Taste	3 at 25°C	Dilution number	consumers’ taps
9.	Tetrachloromethane	3	μg/l	consumers’ taps
10.	Turbidity	4	NTU	consumers’ taps