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 |
31 |
0 |
0 |
2.00 |
2.19 |
3.00 |
Turbidity |
FTU |
4 |
31 |
0 |
0 |
0.12 |
0.14 |
0.48 |
Odour (quantitative) |
Dil Number |
0 |
31 |
1 |
1.92 |
<0.00 |
<0.00 |
0.00 |
Taste (quantitative) |
Dil Number |
0 |
31 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Sodium |
mg/l |
200 |
6 |
0 |
0 |
6.90 |
8.72 |
9.90 |
Nitrate (as NO3) |
mg/l |
50 |
6 |
0 |
0 |
31.30 |
33.58 |
35.60 |
Nitrite (as NO2) |
mg/l |
0.1 |
6 |
0 |
0 |
<0.01 |
<0.01 |
0.01 |
Nitrate/Nitrite Ratio |
mg/l |
1 |
6 |
0 |
0 |
0.63 |
0.67 |
0.71 |
Aluminium |
ug/l |
200 |
31 |
0 |
0 |
6.00 |
8.45 |
20.70 |
Iron |
ug/l |
200 |
31 |
0 |
0 |
7.30 |
9.77 |
58.10 |
Manganese |
ug/l |
50 |
31 |
0 |
0 |
1.70 |
1.75 |
2.60 |
Copper (New Reg Limit) |
mg/l |
2 |
6 |
0 |
0 |
0.01 |
0.07 |
0.18 |
Fluoride |
mg/l |
1.5 |
6 |
0 |
0 |
0.92 |
0.95 |
0.99 |
Arsenic (New Regs Limit) |
ug/l |
10 |
6 |
0 |
0 |
1.00 |
1.00 |
1.00 |
Cadmium |
ug/l |
5 |
6 |
0 |
0 |
0.12 |
0.12 |
0.12 |
Chromium |
ug/l |
50 |
6 |
0 |
0 |
<0.70 |
<0.70 |
0.80 |
Nickel (New Reg Limit) |
ug/l |
20 |
6 |
0 |
0 |
<0.80 |
<0.80 |
0.90 |
Lead (New Reg Limit) |
ug/l |
10 |
6 |
0 |
0 |
0.90 |
0.90 |
0.90 |
Antimony (New Reg Limit) |
ug/l |
5 |
6 |
0 |
0 |
0.20 |
0.20 |
0.20 |
Selenium |
ug/l |
10 |
6 |
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 |
99 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Intestinal Enterococci |
cfu/100ml |
0 |
6 |
0 |
0 |
<0.00 |
<0.00 |
0.00 |
Boron (New Reg Limit) |
mg/l |
1 |
6 |
0 |
0 |
0.04 |
0.04 |
0.04 |
Benzo(a)pyrene |
ug/l |
0.01 |
7 |
0 |
0 |
0.00 |
0.00 |
0.00 |
Trihalomethanes (total) |
ug/l |
100 |
6 |
0 |
0 |
<0.00 |
31.13 |
65.10 |
Bromate |
ug/l |
10 |
6 |
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 |
|
- |
31 |
0 |
0 |
7.20 |
7.57 |
8.00 |
Sulphate (as SO4) |
mg/l |
250 |
6 |
0 |
0 |
34.60 |
35.78 |
37.40 |
Ammonium (as NH4) |
mg/l |
0.5 |
31 |
0 |
0 |
<0.03 |
0.02 |
0.24 |
Total coliforms |
No./100ml |
0 |
99 |
0 |
0 |
<0.00 |
0.00 |
0.00 |
3 day count,22 deg C |
cfu/ml |
50 |
31 |
0 |
0 |
<0.00 |
0.48 |
7.00 |
Free chlorine |
mg/l |
- |
99 |
0 |
0 |
0.03 |
0.31 |
0.62 |
Total chlorine |
mg/l |
- |
99 |
0 |
0 |
0.09 |
0.42 |
0.93 |
Conductivity |
uS/cm |
2500 |
31 |
0 |
0 |
337.00 |
409.90 |
530.00 |
Chloride |
mg/l |
250 |
6 |
0 |
0 |
24.00 |
25.33 |
26.00 |
* 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 1.5 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) |
61.36 | 7.80 | 185.3 | 13.0 | 18.5 | 10.4 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.