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 |
26 |
0 |
0 |
<1.70 |
1.81 |
3.00 |
|
Turbidity |
FTU |
4 |
26 |
0 |
0 |
0.10 |
0.13 |
0.54 |
|
Odour (quantitative) |
Dil Number |
0 |
26 |
0 |
0 |
0 |
0 |
0 |
|
Taste (quantitative) |
Dil Number |
0 |
26 |
0 |
0 |
0 |
0 |
0 |
|
Sodium |
mg/l |
200 |
10 |
0 |
0 |
16.60 |
19.13 |
21.70 |
|
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
12.40 |
22.19 |
31.20 |
|
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 |
0.25 |
0.44 |
0.62 |
|
Aluminium |
ug/l |
200 |
26 |
0 |
0 |
6.00 |
10.02 |
15.40 |
|
Iron |
ug/l |
200 |
26 |
0 |
0 |
5.30 |
13.89 |
159.00 |
|
Manganese |
ug/l |
50 |
26 |
0 |
0 |
1.70 |
1.89 |
6.70 |
|
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.01 |
0.03 |
0.10 |
|
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
<0.11 |
0.78 |
1.08 |
|
Arsenic (New Regs Limit) |
ug/l |
10 |
10 |
0 |
0 |
1.00 |
1.05 |
1.20 |
|
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 |
<0.80 |
1.25 |
3.50 |
|
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 |
0.39 |
0.60 |
|
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 |
78 |
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 |
0.06 |
0.08 |
|
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
|
Trihalomethanes (total) |
ug/l |
100 |
8 |
0 |
0 |
5.57 |
39.27 |
65.90 |
|
Bromate |
ug/l |
10 |
10 |
0 |
0 |
0.80 |
0.81 |
0.90 |
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 |
|
- |
26 |
0 |
0 |
7.00 |
7.32 |
7.80 |
|
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
54.80 |
63.41 |
67.80 |
|
Ammonium (as NH4) |
mg/l |
0.5 |
26 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
|
Total coliforms |
No./100ml |
0 |
78 |
0 |
0 |
0 |
0 |
0 |
|
3 day count,22 deg C |
cfu/ml |
50 |
26 |
0 |
0 |
0 |
1 |
6 |
|
Free chlorine |
mg/l |
- |
78 |
0 |
0 |
0.06 |
0.30 |
0.63 |
|
Total chlorine |
mg/l |
- |
78 |
0 |
0 |
0.17 |
0.48 |
0.84 |
|
Conductivity |
uS/cm |
2500 |
26 |
0 |
0 |
458.00 |
557.85 |
675.00 |
|
Chloride |
mg/l |
250 |
10 |
0 |
0 |
50.00 |
67.00 |
92.00 |
*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) |
| 82.32 | 10.25 | 247.7 | 17.3 | 24.8 | 13.9 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.