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 |
54 |
0 |
0 |
<1.70 |
<1.70 |
2.00 |
Turbidity |
FTU |
4 |
54 |
0 |
0 |
0.10 |
0.11 |
0.20 |
Odour (quantitative) |
Dil Number |
0 |
54 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
54 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
9 |
0 |
0 |
21.20 |
24.97 |
29.00 |
Nitrate (as NO3) |
mg/l |
50 |
9 |
0 |
0 |
27.50 |
34.70 |
39.90 |
Nitrite (as NO2) |
mg/l |
0.1 |
9 |
0 |
0 |
<0.01 |
<0.01 |
0.01 |
Nitrate/Nitrite Ratio |
mg/l |
1 |
9 |
0 |
0 |
0.55 |
0.69 |
0.80 |
Aluminium |
ug/l |
200 |
54 |
0 |
0 |
6.00 |
8.69 |
19.40 |
Iron |
ug/l |
200 |
54 |
0 |
0 |
4.40 |
8.06 |
24.80 |
Manganese |
ug/l |
50 |
54 |
0 |
0 |
1.70 |
1.74 |
2.70 |
Copper (New Reg Limit) |
mg/l |
2 |
9 |
0 |
0 |
0.01 |
0.21 |
1.61 |
Fluoride |
mg/l |
1.5 |
9 |
0 |
0 |
0.32 |
0.81 |
0.97 |
Arsenic (New Regs Limit) |
ug/l |
10 |
9 |
0 |
0 |
1.00 |
1.00 |
1.00 |
Cadmium |
ug/l |
5 |
9 |
0 |
0 |
0.12 |
0.12 |
0.13 |
Chromium |
ug/l |
50 |
9 |
0 |
0 |
<0.70 |
<0.70 |
<0.70 |
Nickel (New Reg Limit) |
ug/l |
20 |
9 |
0 |
0 |
1.20 |
1.96 |
4.10 |
Lead (New Reg Limit) |
ug/l |
10 |
9 |
0 |
0 |
<0.90 |
1.02 |
1.60 |
Antimony (New Reg Limit) |
ug/l |
5 |
9 |
0 |
0 |
0.20 |
0.20 |
0.20 |
Selenium |
ug/l |
10 |
9 |
0 |
0 |
0.80 |
0.80 |
0.80 |
PAH |
ug/l |
0.1 |
10 |
0 |
0 |
0 |
0 |
0 |
Escherichia coli |
No./100ml |
0 |
183 |
0 |
0 |
0 |
0 |
0 |
Intestinal Enterococci |
cfu/100ml |
0 |
9 |
0 |
0 |
0 |
0 |
0 |
Boron (New Reg Limit) |
mg/l |
1 |
9 |
0 |
0 |
0.04 |
0.05 |
0.06 |
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
8 |
0 |
0 |
3.18 |
17.96 |
35.70 |
Bromate |
ug/l |
10 |
9 |
0 |
0 |
0.80 |
0.82 |
1.00 |
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 |
|
- |
54 |
0 |
0 |
6.70 |
7.01 |
7.70 |
Sulphate (as SO4) |
mg/l |
250 |
9 |
0 |
0 |
34.80 |
44.98 |
48.60 |
Ammonium (as NH4) |
mg/l |
0.5 |
54 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
183 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
53 |
0 |
0 |
0 |
1 |
21 |
Free chlorine |
mg/l |
- |
183 |
0 |
0 |
0.03 |
0.19 |
0.45 |
Total chlorine |
mg/l |
- |
183 |
0 |
0 |
0.09 |
0.28 |
0.69 |
Conductivity |
uS/cm |
2500 |
54 |
0 |
0 |
340.00 |
443.13 |
532.00 |
Chloride |
mg/l |
250 |
9 |
0 |
0 |
36.00 |
47.89 |
58.00 |
*All of the samples collected from this zone in 2022 complied with the Water Supply (Water Quality) (Amendment) Regulations 2016. Supplies to this zone are fluoridated up to a level of 1.5mg/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) |
57.13 | 7.42 | 173.2 | 12.1 | 17.3 | 9.7 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.