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 |
43 |
0 |
0 |
2.00 |
2.56 |
4.00 |
Turbidity |
FTU |
4 |
43 |
0 |
0 |
0.12 |
0.13 |
0.25 |
Odour (quantitative) |
Dil Number |
0 |
43 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Taste (quantitative) |
Dil Number |
0 |
41 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Sodium |
mg/l |
200 |
7 |
0 |
0 |
18.30 |
26.71 |
37.40 |
Nitrate (as NO3) |
mg/l |
50 |
7 |
0 |
0 |
13.90 |
17.89 |
24.60 |
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 |
0.28 |
0.36 |
0.49 |
Aluminium |
ug/l |
200 |
43 |
0 |
0 |
7.30 |
14.66 |
42.90 |
Iron |
ug/l |
200 |
43 |
0 |
0 |
7.30 |
11.37 |
44.10 |
Manganese |
ug/l |
50 |
43 |
0 |
0 |
1.70 |
1.80 |
3.40 |
Copper (New Reg Limit) |
mg/l |
2 |
7 |
0 |
0 |
0.01 |
0.07 |
0.22 |
Fluoride |
mg/l |
1.5 |
7 |
0 |
0 |
0.13 |
0.78 |
1.10 |
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 |
0.35 |
Nickel (New Reg Limit) |
ug/l |
20 |
7 |
0 |
0 |
0.90 |
1.27 |
1.90 |
Lead (New Reg Limit) |
ug/l |
10 |
7 |
0 |
0 |
0.90 |
1.17 |
2.00 |
Antimony (New Reg Limit) |
ug/l |
5 |
7 |
0 |
0 |
0.20 |
0.33 |
0.50 |
Selenium |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
0.80 |
0.80 |
PAH |
ug/l |
0.1 |
7 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Escherichia coli |
No./100ml |
0 |
103 |
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 |
0.05 |
0.08 |
Benzo(a)pyrene |
ug/l |
0.01 |
7 |
0 |
0 |
0.00 |
0.00 |
0.00 |
Trihalomethanes (total) |
ug/l |
100 |
8 |
0 |
0 |
49.80 |
67.40 |
83.20 |
Bromate |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
0.93 |
1.60 |
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 |
|
- |
43 |
0 |
0 |
7.00 |
7.31 |
7.80 |
Sulphate (as SO4) |
mg/l |
250 |
7 |
0 |
0 |
22.90 |
47.33 |
69.00 |
Ammonium (as NH4) |
mg/l |
0.5 |
43 |
0 |
0 |
<0.03 |
0.02 |
0.02 |
Total coliforms |
No./100ml |
0 |
103 |
0 |
0 |
<0.00 |
0.00 |
0.00 |
3 day count,22 deg C |
cfu/ml |
50 |
43 |
0 |
0 |
<0.00 |
10.02 |
300.00 |
Free chlorine |
mg/l |
- |
104 |
0 |
0 |
0.03 |
0.10 |
0.49 |
Total chlorine |
mg/l |
- |
104 |
0 |
0 |
0.08 |
0.26 |
0.65 |
Conductivity |
uS/cm |
2500 |
43 |
0 |
0 |
348.00 |
462.72 |
527.00 |
Chloride |
mg/l |
250 |
7 |
0 |
0 |
37.00 |
55.14 |
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) |
44.70 | 9.89 | 152.3 | 10.7 | 15.2 | 8.5 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.