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 |
53 |
0 |
0 |
<1.70 |
1.86 |
3.00 |
Turbidity |
FTU |
4 |
53 |
0 |
0 |
0.10 |
0.12 |
0.61 |
Odour (quantitative) |
Dil Number |
0 |
53 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
53 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
10 |
0 |
0 |
16.60 |
33.39 |
42.60 |
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
15.40 |
20.38 |
25.80 |
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 |
0.31 |
0.41 |
0.52 |
Aluminium |
ug/l |
200 |
53 |
0 |
0 |
8.40 |
23.57 |
144.00 |
Iron |
ug/l |
200 |
53 |
0 |
0 |
4.40 |
8.34 |
21.50 |
Manganese |
ug/l |
50 |
53 |
0 |
0 |
1.70 |
2.09 |
11.90 |
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.01 |
0.01 |
0.01 |
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
0.20 |
0.74 |
1.00 |
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 |
<0.80 |
<0.80 |
1.10 |
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 |
0.22 |
0.40 |
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 |
138 |
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 |
0.04 |
0.06 |
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
10 |
0 |
0 |
41.70 |
55.43 |
72.00 |
Bromate |
ug/l |
10 |
10 |
0 |
0 |
0.80 |
1.30 |
3.20 |
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 |
|
- |
53 |
0 |
0 |
7.00 |
7.44 |
7.90 |
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
29.60 |
38.50 |
58.60 |
Ammonium (as NH4) |
mg/l |
0.5 |
53 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
138 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
52 |
0 |
0 |
0 |
7 |
300 |
Free chlorine |
mg/l |
- |
138 |
0 |
0 |
0.03 |
0.23 |
0.55 |
Total chlorine |
mg/l |
- |
138 |
0 |
0 |
0.10 |
0.38 |
0.71 |
Conductivity |
uS/cm |
2500 |
53 |
0 |
0 |
324.00 |
452.58 |
584.00 |
Chloride |
mg/l |
250 |
10 |
0 |
0 |
49.00 |
60.60 |
77.00 |
*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) |
45.73 | 8.25 | 148.1 | 10.4 | 14.8 | 8.3 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.