My water supply
The samples we take are analysed in a UKAS accredited laboratory to ensure they comply with drinking water safety standards.
Schedule 1 Parameters
|
Units |
PCV |
Number of Samples |
Number of Samples contravening PCV |
% No. of samples contravening PCV |
Min |
Mean |
Max |
Colour |
mg/l Pt/Co |
20 |
30 |
0 |
0 |
2.00 |
2.17 |
3.00 |
Turbidity |
FTU |
4 |
30 |
0 |
0 |
0.12 |
0.14 |
0.75 |
Odour (quantitative) |
Dil Number |
0 |
30 |
1 |
1.92 |
<0.00 |
<0.00 |
0.00 |
Taste (quantitative) |
Dil Number |
0 |
30 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Sodium |
mg/l |
200 |
7 |
0 |
0 |
27.70 |
32.89 |
38.50 |
Nitrate (as NO3) |
mg/l |
50 |
7 |
0 |
0 |
13.10 |
18.29 |
22.10 |
Nitrite (as NO2) |
mg/l |
0.1 |
7 |
0 |
0 |
<0.01 |
<0.01 |
0.01 |
Nitrate/Nitrite Ratio |
mg/l |
1 |
7 |
0 |
0 |
0.26 |
0.37 |
0.44 |
Aluminium |
ug/l |
200 |
30 |
0 |
0 |
6.70 |
19.24 |
111.00 |
Iron |
ug/l |
200 |
30 |
0 |
0 |
7.30 |
13.90 |
168.00 |
Manganese |
ug/l |
50 |
30 |
0 |
0 |
1.70 |
1.84 |
5.60 |
Copper (New Reg Limit) |
mg/l |
2 |
7 |
0 |
0 |
0.01 |
0.01 |
0.03 |
Fluoride |
mg/l |
1.5 |
7 |
0 |
0 |
0.17 |
0.65 |
1.01 |
Arsenic (New Regs Limit) |
ug/l |
10 |
7 |
0 |
0 |
1.00 |
1.00 |
1.00 |
Cadmium |
ug/l |
5 |
7 |
0 |
0 |
0.12 |
0.12 |
0.12 |
Chromium |
ug/l |
50 |
7 |
0 |
0 |
<0.70 |
<0.70 |
0.70 |
Nickel (New Reg Limit) |
ug/l |
20 |
7 |
0 |
0 |
<0.80 |
0.99 |
1.60 |
Lead (New Reg Limit) |
ug/l |
10 |
7 |
0 |
0 |
0.90 |
0.90 |
0.90 |
Antimony (New Reg Limit) |
ug/l |
5 |
7 |
0 |
0 |
0.20 |
0.21 |
0.30 |
Selenium |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
0.80 |
0.80 |
PAH |
ug/l |
0.1 |
6 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Escherichia coli |
No./100ml |
0 |
94 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Intestinal Enterococci |
cfu/100ml |
0 |
7 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Boron (New Reg Limit) |
mg/l |
1 |
7 |
0 |
0 |
0.04 |
0.04 |
0.05 |
Benzo(a)pyrene |
ug/l |
0.01 |
6 |
0 |
0 |
0.00 |
0.00 |
0.00 |
Trihalomethanes (total) |
ug/l |
100 |
7 |
0 |
0 |
52.20 |
63.71 |
86.30 |
Bromate |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
1.51 |
2.40 |
Indicator parameters
|
Units |
PCV |
Number of samples |
Number of Samples contravening PCV |
% No. of samples contravening PCV |
Minimum |
Mean |
Maximum |
pH (New Reg Limit) Env |
|
- |
30 |
0 |
0 |
7.00 |
7.43 |
7.80 |
Sulphate (as SO4) |
mg/l |
250 |
7 |
0 |
0 |
27.10 |
34.17 |
42.40 |
Ammonium (as NH4) |
mg/l |
0.5 |
30 |
0 |
0 |
<0.03 |
0.02 |
0.02 |
Total coliforms |
No./100ml |
0 |
94 |
0 |
0 |
<0.00 |
0.00 |
0.00 |
3 day count,22 deg C |
cfu/ml |
50 |
30 |
0 |
0 |
<0.00 |
11.70 |
300.00 |
Free chlorine |
mg/l |
- |
94 |
0 |
0 |
0.03 |
0.17 |
0.51 |
Total chlorine |
mg/l |
- |
94 |
0 |
0 |
0.11 |
0.35 |
1.06 |
Conductivity |
uS/cm |
2500 |
30 |
0 |
0 |
269.00 |
413.47 |
558.00 |
Chloride |
mg/l |
250 |
7 |
0 |
0 |
48.00 |
55.86 |
66.00 |
* All of the samples collected from this zone in 2023 complied with the Water Supply (Water Quality) (Amendment) Regulations 2016.
Supplies to this zone are fluoridated up to a level of 1.5 mg/l
Water hardness
Average of Ca | Average of Mg | mg/l or ppm CaCO3 | Degrees Clark (*0.07) | Degrees French (*0.10) | Degrees German (*0.056) |
44.33 | 8.19 | 144.4 | 10.1 | 14.4 | 8.1 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.