sampling point
Ash Above Ashford Common Waterworks
| Description | ASH ABOVE ASHFORD COMMON WATERWORKS |
|---|---|
| Sampling point ID | TH-PTHR0004 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 508070 168380 lat lon: 51.404157, -0.447723 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 153 samples taken between 2020 and 2000 |
Determinands
Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.
37 determinands have been measured at this site
- 1,1,1-TCA
- 112TCEthan
- 12-DCA
- Action taken
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- BOD ATU
- BROMO-DCM
- Benzene
- Bromoform
- Carbon Tet
- Chlordbrmthn
- Chloride Ion
- Chloroform
- Cond @ 25C
- DiClMe
- Ethenylbenzn
- Ethylbenzene
- N Oxidised
- NH3 un-ion
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- SI-D
- SI-GQA
- Sld Sus@105C
- Temp Water
- TetClEthene
- Toluene
- Trichloroeth
- Type of Flow
- Xylene Tot
- pH
- pH in-situ
Sampling results
Displaying the twenty most recent samples. You can see all 153 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 24 Jul 2019 to 4 Mar 2020
| Notation | Determinand | Units | 24 Jul 2019 11:45 | 8 Aug 2019 13:11 | 5 Sep 2019 11:05 | 31 Oct 2019 13:36 | 20 Nov 2019 13:54 | 6 Dec 2019 12:57 | 27 Jan 2020 11:42 | 31 Jan 2020 11:43 | 20 Feb 2020 14:56 | 4 Mar 2020 12:31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.74 | 7.99 | 7.85 | 7.66 | 7.61 | 7.7 | 7.8 | 7.61 | 7.8 | ||
| 0076 | Temperature of Water | °C | 22.3 | 18.3 | 14.9 | 9.3 | 5.5 | 7.1 | 7.8 | 7.9 | 7.1 | |
| 0077 | Conductivity at 25 C | μs/cm | 837 | 904 | 925 | 858 | 884 | 886 | 850 | 783 | 765 | |
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.053 | 0.053 | < 0.03 | 0.037 | 0.079 | 0.14 | 0.065 | 0.088 | 0.075 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 10 | 11 | 15 | 9.7 | 7.77 | 9.7 | 7.8 | 4.1 | 3.6 | |
| 0117 | Nitrate as N | mg/l | 9.92 | 11 | 15 | 9.64 | 7.72 | 9.65 | 7.75 | 4.05 | 3.54 | |
| 0118 | Nitrite as N | mg/l | 0.081 | 0.042 | 0.043 | 0.065 | 0.0533 | 0.053 | 0.052 | 0.054 | 0.057 | |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00132 | 0.00173 | < 0.00056 | 0.0003 | 0.00043 | 0.00104 | 0.00064 | 0.00057 | 0.0007 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 200 | 220 | 220 | 230 | 239 | 250 | 240 | 240 | 230 | 220 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.32 | 0.33 | 0.32 | 0.36 | 0.283 | 0.24 | 0.22 | 0.18 | 0.17 | |
| 9901 | Oxygen, Dissolved, % Saturation | % | 59.8 | 88.6 | 59.5 | 65.9 | 59.3 | 77.9 | 78.8 | 79.1 | 85.8 | |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 5.19 | 8.31 | 6 | 7.55 | 7.47 | 9.42 | 9.36 | 9.38 | 10.4 |