Running Waters A507 Hollington Junction
EA name: RUNNING WATERS A507 HOLLINGTON JUNCTION
Environment Agency sampling point AN-16M15 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 4 Sep 2026, 08:4134 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 12 since 10 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives) · results completed 8 Sep 2026
- Where
- National Grid 506544, 236764As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 3 m from the line.
- Next gauge downstream
- Shefford On the River Flit · 9.2 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Results here were completed a median of 4 days after the sample was taken (3 to 5 days, 3 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
38.5%
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 38.5 | 38.5% |
| 4 Aug 2026, 15:00 | 66.9 | 66.9% |
| 17 Jul 2026, 12:25 | 68.8 | 68.8% |
| 3 Jun 2026, 14:02 | 70.1 | 70.1% |
| 20 May 2026, 11:23 | 67 | 67% |
| 13 Apr 2026, 11:44 | 70 | 70% |
| 1 Mar 2024, 10:35 | 85.2 | 85.2% |
| 2 Feb 2024, 10:37 | 84.3 | 84.3% |
| 3 Jan 2024, 10:12 | 87 | 87% |
| 8 Dec 2023, 12:17 | 78.5 | 78.5% |
| 3 Nov 2023, 10:56 | 78.4 | 78.4% |
| 10 Oct 2023, 12:50 | 63.3 | 63.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
3.58 mg/l
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 3.58 | 3.58 mg/l |
| 4 Aug 2026, 15:00 | 6.09 | 6.09 mg/l |
| 17 Jul 2026, 12:25 | 6.38 | 6.38 mg/l |
| 3 Jun 2026, 14:02 | 6.97 | 6.97 mg/l |
| 20 May 2026, 11:23 | 7 | 7 mg/l |
| 13 Apr 2026, 11:44 | 7.53 | 7.53 mg/l |
| 1 Mar 2024, 10:35 | 10.3 | 10.3 mg/l |
| 2 Feb 2024, 10:37 | 9.87 | 9.87 mg/l |
| 3 Jan 2024, 10:12 | 10.1 | 10.1 mg/l |
| 8 Dec 2023, 12:17 | 9.19 | 9.19 mg/l |
| 3 Nov 2023, 10:56 | 8.61 | 8.61 mg/l |
| 10 Oct 2023, 12:50 | 6.22 | 6.22 mg/l |
Water temperature
code 0076 · °C
18.7 °C
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 18.7 | 18.7 °C |
| 4 Aug 2026, 15:00 | 19.8 | 19.8 °C |
| 17 Jul 2026, 12:25 | 18.9 | 18.9 °C |
| 3 Jun 2026, 14:02 | 15.5 | 15.5 °C |
| 20 May 2026, 11:23 | 13.3 | 13.3 °C |
| 13 Apr 2026, 11:44 | 12 | 12 °C |
| 1 Mar 2024, 10:35 | 7.3 | 7.3 °C |
| 2 Feb 2024, 10:37 | 8.4 | 8.4 °C |
| 3 Jan 2024, 10:12 | 8.7 | 8.7 °C |
| 8 Dec 2023, 12:17 | 8.4 | 8.4 °C |
| 3 Nov 2023, 10:56 | 11.1 | 11.1 °C |
| 10 Oct 2023, 12:50 | 16.1 | 16.1 °C |
pH
code 0061
6.97
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 6.97 | 6.97 |
| 4 Aug 2026, 15:00 | 7.53 | 7.53 |
| 17 Jul 2026, 12:25 | 7.54 | 7.54 |
| 3 Jun 2026, 14:02 | 7.21 | 7.21 |
| 20 May 2026, 11:23 | 7.2 | 7.2 |
| 13 Apr 2026, 11:44 | 7.38 | 7.38 |
| 1 Mar 2024, 10:35 | 7.56 | 7.56 |
| 2 Feb 2024, 10:37 | 7.53 | 7.53 |
| 3 Jan 2024, 10:12 | 7.82 | 7.82 |
| 8 Dec 2023, 12:17 | 7.55 | 7.55 |
| 3 Nov 2023, 10:56 | 7.48 | 7.48 |
| 10 Oct 2023, 12:50 | 7.26 | 7.26 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Aug 2026, 15:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jul 2026, 12:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jun 2026, 14:02 | 0.11 | 0.11 mg/l |
| 20 May 2026, 11:23 | 0.55 | 0.55 mg/l |
| 13 Apr 2026, 11:44 | 2 | 2 mg/l |
| 1 Mar 2024, 10:35 | 0.32 | 0.32 mg/l |
| 2 Feb 2024, 10:37 | 0.14 | 0.14 mg/l |
| 3 Jan 2024, 10:12 | 0.18 | 0.18 mg/l |
| 8 Dec 2023, 12:17 | 0.54 | 0.54 mg/l |
| 3 Nov 2023, 10:56 | 0.039 | 0.039 mg/l |
| 10 Oct 2023, 12:50 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
17.9 mg/l
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 17.9 | 17.9 mg/l |
| 4 Aug 2026, 15:00 | 14 | 14 mg/l |
| 17 Jul 2026, 12:25 | 17 | 17 mg/l |
| 3 Jun 2026, 14:02 | 8.94 | 8.94 mg/l |
| 20 May 2026, 11:23 | 10.6 | 10.6 mg/l |
| 13 Apr 2026, 11:44 | 13.6 | 13.6 mg/l |
| 1 Mar 2024, 10:35 | 7.07 | 7.07 mg/l |
| 2 Feb 2024, 10:37 | 9.91 | 9.91 mg/l |
| 3 Jan 2024, 10:12 | 7.46 | 7.46 mg/l |
| 8 Dec 2023, 12:17 | 10.8 | 10.8 mg/l |
| 3 Nov 2023, 10:56 | 9.74 | 9.74 mg/l |
| 10 Oct 2023, 12:50 | 12 | 12 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.65 mg/l
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 0.65 | 0.65 mg/l |
| 4 Aug 2026, 15:00 | 0.54 | 0.54 mg/l |
| 17 Jul 2026, 12:25 | 0.81 | 0.81 mg/l |
| 3 Jun 2026, 14:02 | 0.64 | 0.64 mg/l |
| 20 May 2026, 11:23 | 0.37 | 0.37 mg/l |
| 13 Apr 2026, 11:44 | 0.97 | 0.97 mg/l |
| 1 Mar 2024, 10:35 | 0.097 | 0.097 mg/l |
| 2 Feb 2024, 10:37 | 0.34 | 0.34 mg/l |
| 3 Jan 2024, 10:12 | 0.18 | 0.18 mg/l |
| 8 Dec 2023, 12:17 | 0.14 | 0.14 mg/l |
| 3 Nov 2023, 10:56 | 0.11 | 0.11 mg/l |
| 10 Oct 2023, 12:50 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1235 µS/cm
Sampled 4 Sep 2026, 34 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 08:41 | 1235 | 1235 µS/cm |
| 4 Aug 2026, 15:00 | 979 | 979 µS/cm |
| 17 Jul 2026, 12:25 | 1126 | 1126 µS/cm |
| 3 Jun 2026, 14:02 | 782 | 782 µS/cm |
| 20 May 2026, 11:23 | 963 | 963 µS/cm |
| 13 Apr 2026, 11:44 | 961 | 961 µS/cm |
| 1 Mar 2024, 10:35 | 738 | 738 µS/cm |
| 2 Feb 2024, 10:37 | 933 | 933 µS/cm |
| 3 Jan 2024, 10:12 | 662 | 662 µS/cm |
| 8 Dec 2023, 12:17 | 851 | 851 µS/cm |
| 3 Nov 2023, 10:56 | 711 | 711 µS/cm |
| 10 Oct 2023, 12:50 | 941 | 941 µS/cm |
Everything measured here
12 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Oct 2023 – Sep 2026 | 38.5% 4 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Oct 2023 – Sep 2026 | 3.58 mg/l 4 Sep 2026 |
| Temperature of Water 0076 | River water | 12 | Oct 2023 – Sep 2026 | 18.7 °C 4 Sep 2026 |
| pH 0061 | River water | 12 | Oct 2023 – Sep 2026 | 6.97 4 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Oct 2023 – Sep 2026 | below 0.03 mg/l 4 Sep 2026 |
| Nitrate as N 0117 | River water | 12 | Oct 2023 – Sep 2026 | 17.9 mg/l 4 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Oct 2023 – Sep 2026 | 0.65 mg/l 4 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 12 | Oct 2023 – Sep 2026 | 1235 µS/cm 4 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 12 | Oct 2023 – Sep 2026 | 130 mg/l 4 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 12 | Oct 2023 – Sep 2026 | below 0.0001 mg/l 4 Sep 2026 |
| Nitrite as N 0118 | River water | 12 | Oct 2023 – Sep 2026 | 0.058 mg/l 4 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Oct 2023 – Sep 2026 | 18 mg/l 4 Sep 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.