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 |
23 |
0 |
0 |
<1.70 |
<1.70 |
2.00 |
Turbidity |
FTU |
4 |
23 |
0 |
0 |
0.10 |
0.12 |
0.28 |
Odour (quantitative) |
Dil Number |
0 |
23 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
23 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
10 |
0 |
0 |
7.90 |
9.57 |
11.10 |
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
30.40 |
35.00 |
45.00 |
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 |
0.61 |
0.70 |
0.90 |
Aluminium |
ug/l |
200 |
10 |
0 |
0 |
6.00 |
6.19 |
7.90 |
Iron |
ug/l |
200 |
10 |
0 |
0 |
7.30 |
7.30 |
7.30 |
Manganese |
ug/l |
50 |
10 |
0 |
0 |
1.70 |
1.70 |
1.70 |
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.02 |
0.14 |
0.43 |
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
0.14 |
0.17 |
0.19 |
Arsenic (New Regs Limit) |
ug/l |
10 |
10 |
0 |
0 |
1.00 |
1.00 |
1.00 |
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 |
1.20 |
2.42 |
3.40 |
Lead (New Reg Limit) |
ug/l |
10 |
10 |
0 |
0 |
<0.90 |
0.90 |
0.90 |
Antimony (New Reg Limit) |
ug/l |
5 |
10 |
0 |
0 |
0.20 |
0.21 |
0.30 |
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 |
95 |
0 |
0 |
0 |
0 |
0 |
Intestinal Enterococci |
cfu/100ml |
0 |
10 |
0 |
0 |
0 |
0 |
0 |
Boron (New Reg Limit) |
mg/l |
1 |
10 |
0 |
0 |
0.04 |
0.04 |
0.04 |
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
10 |
0 |
0 |
5.03 |
6.24 |
8.58 |
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 |
|
- |
23 |
0 |
0 |
7.20 |
7.45 |
7.80 |
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
22.20 |
23.66 |
25.40 |
Ammonium (as NH4) |
mg/l |
0.5 |
23 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
95 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
23 |
0 |
0 |
0 |
2 |
18 |
Free chlorine |
mg/l |
- |
95 |
0 |
0 |
0.03 |
0.11 |
0.25 |
Conductivity |
uS/cm |
2500 |
23 |
0 |
0 |
522.00 |
554.39 |
640.00 |
Chloride |
mg/l |
250 |
10 |
0 |
0 |
21.00 |
23.60 |
27.00 |
* All of the samples collected from this zone in 2022 complied with the Water Supply (Water Quality) (Amendment) Regulations 2016.
Water hardness
Average of Mg | Average of Ca | mg/l or ppm CaCO3 | Degrees Clark (*0.07) | Degrees French (*0.10) | Degrees German (*0.056) |
4.15 | 110.83 | 293.8 | 20.6 | 29.4 | 16.5 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.