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 |
52 |
0 |
0 |
<1.70 |
<1.70 |
2.00 |
Turbidity |
FTU |
4 |
52 |
0 |
0 |
0.10 |
0.11 |
0.14 |
Odour (quantitative) |
Dil Number |
0 |
52 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
52 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
9 |
0 |
0 |
16.20 |
22.19 |
27.10 |
Nitrate (as NO3) |
mg/l |
50 |
9 |
0 |
0 |
4.50 |
10.80 |
18.20 |
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 |
0.09 |
0.22 |
0.36 |
Aluminium |
ug/l |
200 |
52 |
0 |
0 |
6.00 |
8.50 |
18.60 |
Iron |
ug/l |
200 |
52 |
0 |
0 |
4.80 |
8.42 |
33.50 |
Manganese |
ug/l |
50 |
52 |
0 |
0 |
1.70 |
1.71 |
2.00 |
Copper (New Reg Limit) |
mg/l |
2 |
9 |
0 |
0 |
0.01 |
0.01 |
0.03 |
Fluoride |
mg/l |
1.5 |
9 |
0 |
0 |
0.21 |
0.84 |
1.05 |
Arsenic (New Regs Limit) |
ug/l |
10 |
9 |
0 |
0 |
1.00 |
2.10 |
3.10 |
Cadmium |
ug/l |
5 |
9 |
0 |
0 |
0.12 |
0.12 |
0.12 |
Chromium |
ug/l |
50 |
9 |
0 |
0 |
<0.70 |
<0.70 |
<0.70 |
Nickel (New Reg Limit) |
ug/l |
20 |
9 |
0 |
0 |
<0.80 |
<0.80 |
0.90 |
Lead (New Reg Limit) |
ug/l |
10 |
9 |
0 |
0 |
<0.90 |
1.88 |
4.50 |
Antimony (New Reg Limit) |
ug/l |
5 |
9 |
0 |
0 |
0.80 |
1.67 |
2.50 |
Selenium |
ug/l |
10 |
9 |
0 |
0 |
<0.80 |
<0.80 |
<0.80 |
PAH |
ug/l |
0.1 |
9 |
0 |
0 |
0 |
0 |
0 |
Escherichia coli |
No./100ml |
0 |
149 |
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 |
0.08 |
Benzo(a)pyrene |
ug/l |
0.01 |
9 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
9 |
0 |
0 |
19.10 |
40.49 |
71.20 |
Bromate |
ug/l |
10 |
9 |
0 |
0 |
0.80 |
0.81 |
0.90 |
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 |
|
- |
52 |
0 |
0 |
7.10 |
7.39 |
7.90 |
Sulphate (as SO4) |
mg/l |
250 |
9 |
0 |
0 |
64.50 |
81.42 |
94.60 |
Ammonium (as NH4) |
mg/l |
0.5 |
52 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
149 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
52 |
0 |
0 |
0 |
2 |
94 |
Free chlorine |
mg/l |
- |
149 |
0 |
0 |
0.04 |
0.23 |
0.50 |
Total chlorine |
mg/l |
- |
149 |
0 |
0 |
0.11 |
0.36 |
0.96 |
Conductivity |
uS/cm |
2500 |
52 |
0 |
0 |
465.00 |
503.25 |
549.00 |
Chloride |
mg/l |
250 |
9 |
0 |
0 |
33.00 |
43.78 |
56.00 |
*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 1.5 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) |
58.53 | 14.57 | 206.1 | 14.4 | 20.6 | 11.5 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.