sampling point
Standon Stw
| Description | STANDON STW |
|---|---|
| Sampling point ID | TH-PLEE0148 |
| Type | Sewage Discharges – Final/Treated Effluent – Water Company |
| Status | open |
| Location |
easting northing: 539690 221780 lat lon: 51.877092, 0.027887 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 388 samples taken between 2024 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.
18 determinands have been measured at this site
- Action taken
- Ammonia(N)
- BOD ATU
- COD as O2
- Chloride Ion
- N Oxidised
- NO FLOW/SAMP
- O Diss %sat
- Orthophospht
- Oxygen Diss
- PE - Calc
- SI-E
- Samp Freq
- Sld Sus@105C
- Temp Water
- Type of Flow
- Weather Waiv
- pH
Sampling results
Displaying the twenty most recent samples. You can see all 388 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 20 Jul 2023 to 15 Feb 2024
| Notation | Determinand | Units | 20 Jul 2023 11:15 | 9 Aug 2023 10:25 | 21 Sep 2023 13:07 | 5 Oct 2023 06:50 | 25 Oct 2023 08:58 | 21 Nov 2023 08:04 | 22 Nov 2023 06:54 | 13 Dec 2023 11:19 | 22 Jan 2024 12:45 | 15 Feb 2024 08:28 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0085 | BOD : 5 Day ATU | mg/l | < 2.8 | < 2.8 | < 2.8 | 2.5 | 3.3 | 4.1 | 3.8 | 3.9 | 7.8 | 3.8 |
| 0092 | Chemical Oxygen Demand :- {COD} | mg/l | 31.6 | 40.1 | ||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.09 | < 0.09 | 0.19 | 0.13 | < 0.09 | 0.1 | 0.32 | < 0.09 | ||
| 0135 | Solids, Suspended at 105 C | mg/l | < 3.7 | 5.2 | < 3.7 | 8.4 | 16.2 | 12.6 | 17.2 | 11.6 |
Samples from 9 Dec 2022 to 14 Jun 2023
| Notation | Determinand | Units | 9 Dec 2022 10:41 | 1 Jan 2023 00:07 | 24 Jan 2023 13:10 | 13 Feb 2023 08:43 | 14 Feb 2023 08:55 | 14 Mar 2023 11:14 | 1 Apr 2023 10:20 | 11 May 2023 08:30 | 12 May 2023 07:27 | 14 Jun 2023 12:07 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0085 | BOD : 5 Day ATU | mg/l | 4.1 | 3.9 | 4 | 8.1 | 6.5 | 4 | 3.7 | 3.5 | 3.3 | |
| 0092 | Chemical Oxygen Demand :- {COD} | mg/l | 55.1 | 42 | ||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | 2.42 | 0.57 | < 0.09 | 0.36 | < 0.09 | < 0.09 | < 0.09 | |||
| 0135 | Solids, Suspended at 105 C | mg/l | 4 | 5.8 | 9.2 | 16.8 | 9 | 10.4 | 6.4 | |||
| 4840 | Sampling Frequency | no/ann | 4 | |||||||||
| 4842 | Population Equivalent - Calculated | 4134 |