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 |
45 |
0 |
0 |
2.00 |
2.00 |
2.00 |
Turbidity |
FTU |
4 |
45 |
0 |
0 |
0.12 |
0.14 |
0.88 |
Odour (quantitative) |
Dil Number |
0 |
45 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Taste (quantitative) |
Dil Number |
0 |
45 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Sodium |
mg/l |
200 |
7 |
0 |
0 |
22.30 |
24.43 |
27.70 |
Nitrate (as NO3) |
mg/l |
50 |
7 |
0 |
0 |
19.40 |
33.14 |
41.90 |
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 |
0.39 |
0.66 |
0.84 |
Aluminium |
ug/l |
200 |
45 |
0 |
0 |
6.00 |
7.30 |
17.90 |
Iron |
ug/l |
200 |
45 |
0 |
0 |
7.30 |
7.65 |
10.90 |
Manganese |
ug/l |
50 |
45 |
0 |
0 |
1.70 |
1.76 |
2.80 |
Copper (New Reg Limit) |
mg/l |
2 |
7 |
0 |
0 |
0.02 |
0.12 |
0.62 |
Fluoride |
mg/l |
1.5 |
7 |
0 |
0 |
0.56 |
0.80 |
0.97 |
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 |
0.13 |
Chromium |
ug/l |
50 |
7 |
0 |
0 |
<0.70 |
<0.70 |
0.70 |
Nickel (New Reg Limit) |
ug/l |
20 |
7 |
0 |
0 |
0.90 |
1.69 |
2.40 |
Lead (New Reg Limit) |
ug/l |
10 |
7 |
0 |
0 |
0.90 |
0.99 |
1.50 |
Antimony (New Reg Limit) |
ug/l |
5 |
7 |
0 |
0 |
0.20 |
0.20 |
0.20 |
Selenium |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
0.80 |
0.80 |
PAH |
ug/l |
0.1 |
6 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Escherichia coli |
No./100ml |
0 |
151 |
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 |
0.06 |
Benzo(a)pyrene |
ug/l |
0.01 |
6 |
0 |
0 |
0.00 |
0.00 |
0.00 |
Trihalomethanes (total) |
ug/l |
100 |
8 |
0 |
0 |
4.51 |
14.76 |
33.40 |
Bromate |
ug/l |
10 |
7 |
0 |
0 |
0.80 |
0.80 |
0.80 |
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 |
|
- |
45 |
0 |
0 |
6.80 |
6.97 |
7.40 |
Sulphate (as SO4) |
mg/l |
250 |
7 |
0 |
0 |
28.50 |
44.97 |
49.90 |
Ammonium (as NH4) |
mg/l |
0.5 |
45 |
0 |
0 |
<0.03 |
0.02 |
0.02 |
Total coliforms |
No./100ml |
0 |
151 |
0 |
0 |
<0.00 |
0.00 |
0.0 |
3 day count,22 deg C |
cfu/ml |
50 |
45 |
0 |
0 |
<0.00 |
0.71 |
9.00 |
Free chlorine |
mg/l |
- |
151 |
0 |
0 |
0.03 |
0.15 |
0.34 |
Total chlorine |
mg/l |
- |
151 |
0 |
0 |
0.06 |
0.24 |
0.71 |
Conductivity |
uS/cm |
2500 |
45 |
0 |
0 |
278.00 |
445.69 |
523.00 |
Chloride |
mg/l |
250 |
7 |
0 |
0 |
44.00 |
48.14 |
52.00 |
*All of the samples collected from this zone in 2023 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) |
55.53 | 7.63 | 170.0 | 11.9 | 17.0 | 9.5 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.