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 |
52 |
0 |
0 |
<1.70 |
1.83 |
3.00 |
Turbidity |
FTU |
4 |
52 |
0 |
0 |
0.10 |
0.12 |
0.33 |
Odour (quantitative) |
Dil Number |
0 |
52 |
0 |
0 |
0 |
0 |
0 |
Taste (quantitative) |
Dil Number |
0 |
52 |
0 |
0 |
0 |
0 |
0 |
Sodium |
mg/l |
200 |
10 |
0 |
0 |
18.50 |
33.16 |
43.10 |
Nitrate (as NO3) |
mg/l |
50 |
10 |
0 |
0 |
18.80 |
22.76 |
34.70 |
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 |
0.38 |
0.46 |
0.69 |
Aluminium |
ug/l |
200 |
52 |
0 |
0 |
7.80 |
25.45 |
120.00 |
Iron |
ug/l |
200 |
52 |
0 |
0 |
4.60 |
8.29 |
49.60 |
Manganese |
ug/l |
50 |
52 |
0 |
0 |
1.70 |
2.51 |
12.90 |
Copper (New Reg Limit) |
mg/l |
2 |
10 |
0 |
0 |
0.01 |
0.03 |
0.22 |
Fluoride |
mg/l |
1.5 |
10 |
0 |
0 |
0.14 |
0.65 |
1.08 |
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 |
1.60 |
6.40 |
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 |
0.24 |
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 |
150 |
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 |
0.05 |
0.06 |
Benzo(a)pyrene |
ug/l |
0.01 |
10 |
0 |
0 |
<0.003 |
<0.003 |
<0.003 |
Trihalomethanes (total) |
ug/l |
100 |
9 |
0 |
0 |
44.20 |
58.22 |
74.30 |
Bromate |
ug/l |
10 |
10 |
0 |
0 |
0.80 |
0.99 |
2.00 |
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 |
|
- |
52 |
0 |
0 |
7.00 |
7.46 |
7.90 |
Sulphate (as SO4) |
mg/l |
250 |
10 |
0 |
0 |
23.30 |
43.86 |
52.90 |
Ammonium (as NH4) |
mg/l |
0.5 |
52 |
0 |
0 |
<0.03 |
<0.03 |
<0.03 |
Total coliforms |
No./100ml |
0 |
150 |
0 |
0 |
0 |
0 |
0 |
3 day count,22 deg C |
cfu/ml |
50 |
52 |
0 |
0 |
0 |
8 |
300 |
Free chlorine |
mg/l |
- |
150 |
0 |
0 |
0.03 |
0.19 |
0.47 |
Total chlorine |
mg/l |
- |
150 |
0 |
0 |
0.11 |
0.32 |
0.69 |
Conductivity |
uS/cm |
2500 |
52 |
0 |
0 |
325.00 |
461.38 |
704.00 |
Chloride |
mg/l |
250 |
10 |
0 |
0 |
51.00 |
62.40 |
75.00 |
*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) |
47.68 | 8.90 | 155.7 | 10.9 | 15.6 | 8.7 |
Water quality terms
Find out what the technical terms used in the water quality reports mean.