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 |
38 |
0 |
0 |
<1.70 |
<1.70 |
2.00 |
Turbidity |
FTU |
4 |
38 |
0 |
0 |
0.10 |
0.13 |
0.68 |
Odour (quantitative) |
Dil Number |
0 |
38 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
38 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
10 |
0 |
0 |
21.50 |
26.03 |
29.10 |
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
35.40 |
37.62 |
39.80 |
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 |
0.71 |
0.75 |
0.80 |
Aluminium |
ug/l |
200 |
38 |
0 |
0 |
6.00 |
6.88 |
19.40 |
Iron |
ug/l |
200 |
38 |
0 |
0 |
7.30 |
10.95 |
18.20 |
Manganese |
ug/l |
50 |
38 |
0 |
0 |
1.70 |
1.72 |
2.00 |
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.01 |
0.15 |
0.85 |
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
0.81 |
0.92 |
1.12 |
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 |
1.10 |
1.38 |
2.70 |
Lead (New Reg Limit) |
ug/l |
10 |
10 |
0 |
0 |
<0.90 |
1.17 |
3.50 |
Antimony (New Reg Limit) |
ug/l |
5 |
10 |
0 |
0 |
0.20 |
0.20 |
0.20 |
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 |
104 |
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 |
0.06 |
0.06 |
0.07 |
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
11 |
0 |
0 |
9.04 |
11.77 |
14.20 |
Bromate |
ug/l |
10 |
10 |
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 |
|
- |
38 |
0 |
0 |
6.90 |
7.14 |
7.50 |
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
47.20 |
49.08 |
51.40 |
Ammonium (as NH4) |
mg/l |
0.5 |
38 |
0 |
0 |
<0.03 |
0.02 |
0.04 |
Total coliforms |
No./100ml |
0 |
104 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
38 |
0 |
0 |
0 |
2 |
41 |
Free chlorine |
mg/l |
- |
104 |
0 |
0 |
0.03 |
0.26 |
0.63 |
Total chlorine |
mg/l |
- |
104 |
0 |
0 |
0.10 |
0.33 |
0.70 |
Conductivity |
uS/cm |
2500 |
38 |
0 |
0 |
408.00 |
501.76 |
542.00 |
Chloride |
mg/l |
250 |
10 |
0 |
0 |
50.00 |
52.30 |
55.00 |
*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 1.5mg/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) |
61.79 | 7.80 | 186.4 | 13.0 | 18.6 | 10.4 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.