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 |
36 |
0 |
0 |
<1.70 |
<1.70 |
2.00 |
Turbidity |
FTU |
4 |
36 |
0 |
0 |
0.10 |
0.11 |
0.12 |
Odour (quantitative) |
Dil Number |
0 |
36 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
36 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
10 |
0 |
0 |
20.80 |
39.92 |
49.40 |
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
<1.03 |
3.57 |
10.80 |
Nitrite (as NO2) |
mg/l |
0.1 |
10 |
0 |
0 |
<0.01 |
<0.01 |
0.01 |
Nitrate/Nitrite Ratio |
mg/l |
1 |
10 |
0 |
0 |
<0.03 |
0.07 |
0.22 |
Aluminium |
ug/l |
200 |
36 |
0 |
0 |
6.00 |
6.55 |
17.00 |
Iron |
ug/l |
200 |
36 |
0 |
0 |
7.30 |
14.63 |
43.50 |
Manganese |
ug/l |
50 |
36 |
0 |
0 |
1.70 |
1.70 |
1.70 |
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.01 |
0.08 |
0.25 |
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
0.91 |
0.96 |
1.02 |
Arsenic (New Regs Limit) |
ug/l |
10 |
10 |
0 |
0 |
1.00 |
1.32 |
2.30 |
Cadmium |
ug/l |
5 |
10 |
0 |
0 |
0.12 |
0.12 |
0.12 |
Chromium |
ug/l |
50 |
10 |
0 |
0 |
<0.70 |
<0.70 |
<0.70 |
Nickel (New Reg Limit) |
ug/l |
20 |
10 |
0 |
0 |
<0.80 |
<0.80 |
0.40 |
Lead (New Reg Limit) |
ug/l |
10 |
10 |
0 |
0 |
<0.90 |
1.10 |
2.90 |
Antimony (New Reg Limit) |
ug/l |
5 |
10 |
0 |
0 |
0.20 |
0.75 |
2.00 |
Selenium |
ug/l |
10 |
10 |
0 |
0 |
0.80 |
0.80 |
0.80 |
PAH |
ug/l |
0.1 |
10 |
0 |
0 |
0 |
0 |
0 |
Escherichia coli |
No./100ml |
0 |
89 |
0 |
0 |
0 |
0 |
0 |
Intestinal Enterococci |
cfu/100ml |
0 |
10 |
0 |
0 |
0 |
0 |
0 |
Boron (New Reg Limit) |
mg/l |
1 |
8 |
0 |
0 |
0.04 |
0.07 |
0.09 |
Benzo(a)pyrene |
ug/l |
0.01 |
9 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
9 |
0 |
0 |
3.09 |
20.84 |
34.20 |
Bromate |
ug/l |
10 |
8 |
0 |
0 |
0.80 |
1.11 |
2.00 |
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 |
|
- |
36 |
0 |
0 |
7.30 |
7.45 |
7.80 |
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
75.00 |
126.08 |
155.00 |
Ammonium (as NH4) |
mg/l |
0.5 |
36 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
89 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
36 |
0 |
0 |
0 |
1 |
17 |
Free chlorine |
mg/l |
- |
83 |
0 |
0 |
0.04 |
0.17 |
0.31 |
Total chlorine |
mg/l |
- |
81 |
0 |
0 |
0.06 |
0.24 |
0.77 |
Conductivity |
uS/cm |
2500 |
34 |
0 |
0 |
463.00 |
686.76 |
864.00 |
Chloride |
mg/l |
250 |
8 |
0 |
0 |
37.00 |
54.13 |
71.00 |
*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 1mg/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) |
91.91 | 28.70 | 347.6 | 24.3 | 34.8 | 19.5 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.