River Ant Irstead Church
EA name: R.ANT IRSTEAD CHURCH
Environment Agency sampling point AN-ANT180 · 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
- 26 Aug 2026, 12:3636 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 23 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 636600, 320500As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Ant
- River, by the map
- The ShoalsPlaced on the river its name gives, 35 m from the line. A tidal reach: water runs both ways, so no gauge order is claimed.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (local monitoring) (33 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
94.3%
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in percentage on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 94.3 | 94.3% |
| 23 Jul 2026, 11:28 | 90.8 | 90.8% |
| 25 Jun 2026, 09:48 | 105.7 | 105.7% |
| 28 May 2026, 12:21 | 107 | 107% |
| 28 Apr 2026, 10:58 | 111.1 | 111.1% |
| 24 Mar 2026, 12:39 | 132.5 | 132.5% |
| 24 Feb 2026, 10:44 | 108.3 | 108.3% |
| 26 Jan 2026, 11:59 | 89.7 | 89.7% |
| 19 Dec 2025, 11:33 | 90.9 | 90.9% |
| 26 Nov 2025, 12:00 | 90.8 | 90.8% |
| 24 Oct 2025, 11:06 | 96 | 96% |
| 25 Sep 2025, 11:56 | 106.1 | 106.1% |
| 27 Aug 2025, 10:54 | 114.9 | 114.9% |
| 22 Jul 2025, 11:54 | 81 | 81% |
| 25 Jun 2025, 12:13 | 66.1 | 66.1% |
| 27 May 2025, 10:03 | 82.8 | 82.8% |
| 23 Apr 2025, 11:45 | 99.7 | 99.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.54 mg/l
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in milligram per litre on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 8.54 | 8.54 mg/l |
| 23 Jul 2026, 11:28 | 8.2 | 8.2 mg/l |
| 25 Jun 2026, 09:48 | 8.76 | 8.76 mg/l |
| 28 May 2026, 12:21 | 9.37 | 9.37 mg/l |
| 28 Apr 2026, 10:58 | 11.2 | 11.2 mg/l |
| 24 Mar 2026, 12:39 | 14.5 | 14.5 mg/l |
| 24 Feb 2026, 10:44 | 12.7 | 12.7 mg/l |
| 26 Jan 2026, 11:59 | 11.4 | 11.4 mg/l |
| 19 Dec 2025, 11:33 | 10.8 | 10.8 mg/l |
| 26 Nov 2025, 12:00 | 11.7 | 11.7 mg/l |
| 24 Oct 2025, 11:06 | 10.5 | 10.5 mg/l |
| 25 Sep 2025, 11:56 | 10.4 | 10.4 mg/l |
| 27 Aug 2025, 10:54 | 10.5 | 10.5 mg/l |
| 22 Jul 2025, 11:54 | 7.11 | 7.11 mg/l |
| 25 Jun 2025, 12:13 | 5.86 | 5.86 mg/l |
| 27 May 2025, 10:03 | 8.12 | 8.12 mg/l |
| 23 Apr 2025, 11:45 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
20.1 °C
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in celsius on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 20.1 | 20.1 °C |
| 23 Jul 2026, 11:28 | 20.2 | 20.2 °C |
| 25 Jun 2026, 09:48 | 24.7 | 24.7 °C |
| 28 May 2026, 12:21 | 21.8 | 21.8 °C |
| 28 Apr 2026, 10:58 | 14.9 | 14.9 °C |
| 24 Mar 2026, 12:39 | 11.1 | 11.1 °C |
| 24 Feb 2026, 10:44 | 8.3 | 8.3 °C |
| 26 Jan 2026, 11:59 | 5.1 | 5.1 °C |
| 19 Dec 2025, 11:33 | 7.8 | 7.8 °C |
| 26 Nov 2025, 12:00 | 4.6 | 4.6 °C |
| 24 Oct 2025, 11:06 | 11.4 | 11.4 °C |
| 25 Sep 2025, 11:56 | 16 | 16 °C |
| 27 Aug 2025, 10:54 | 19.7 | 19.7 °C |
| 22 Jul 2025, 11:54 | 21.7 | 21.7 °C |
| 25 Jun 2025, 12:13 | 21.2 | 21.2 °C |
| 27 May 2025, 10:03 | 16.2 | 16.2 °C |
| 23 Apr 2025, 11:45 | 13.6 | 13.6 °C |
pH
code 0061
8.42
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in ph units on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 8.42 | 8.42 |
| 23 Jul 2026, 11:28 | 8.55 | 8.55 |
| 25 Jun 2026, 09:48 | 8.46 | 8.46 |
| 28 May 2026, 12:21 | 8.39 | 8.39 |
| 28 Apr 2026, 10:58 | 8.32 | 8.32 |
| 24 Mar 2026, 12:39 | 8.8 | 8.8 |
| 24 Feb 2026, 10:44 | 8.42 | 8.42 |
| 26 Jan 2026, 11:59 | 7.85 | 7.85 |
| 19 Dec 2025, 11:33 | 8.05 | 8.05 |
| 26 Nov 2025, 12:00 | 7.89 | 7.89 |
| 24 Oct 2025, 11:06 | 8.02 | 8.02 |
| 25 Sep 2025, 11:56 | 8.85 | 8.85 |
| 27 Aug 2025, 10:54 | 8.55 | 8.55 |
| 22 Jul 2025, 11:54 | 8.18 | 8.18 |
| 25 Jun 2025, 12:13 | 8 | 8 |
| 27 May 2025, 10:03 | 8.23 | 8.23 |
| 23 Apr 2025, 11:45 | 8.18 | 8.18 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in milligram per litre on another sample material (2GZZ): 15 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2026, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2026, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 May 2026, 12:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Apr 2026, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Mar 2026, 12:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Feb 2026, 10:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jan 2026, 11:59 | 0.16 | 0.16 mg/l |
| 19 Dec 2025, 11:33 | 0.14 | 0.14 mg/l |
| 26 Nov 2025, 12:00 | 0.28 | 0.28 mg/l |
| 24 Oct 2025, 11:06 | 0.031 | 0.031 mg/l |
| 25 Sep 2025, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Aug 2025, 10:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jul 2025, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 12:13 | 0.089 | 0.089 mg/l |
| 27 May 2025, 10:03 | 0.12 | 0.12 mg/l |
| 23 Apr 2025, 11:45 | 0.044 | 0.044 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in milligram per litre on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | <0.196 | below 0.196 mg/l (not detected above this) |
| 23 Jul 2026, 11:28 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Jun 2026, 09:48 | <0.196 | below 0.196 mg/l (not detected above this) |
| 28 May 2026, 12:21 | <0.196 | below 0.196 mg/l (not detected above this) |
| 28 Apr 2026, 10:58 | 0.389 | 0.389 mg/l |
| 24 Mar 2026, 12:39 | 0.897 | 0.897 mg/l |
| 24 Feb 2026, 10:44 | 1.88 | 1.88 mg/l |
| 26 Jan 2026, 11:59 | 1.77 | 1.77 mg/l |
| 19 Dec 2025, 11:33 | 1.36 | 1.36 mg/l |
| 26 Nov 2025, 12:00 | 1.06 | 1.06 mg/l |
| 24 Oct 2025, 11:06 | 0.411 | 0.411 mg/l |
| 25 Sep 2025, 11:56 | <0.196 | below 0.196 mg/l (not detected above this) |
| 27 Aug 2025, 10:54 | <0.196 | below 0.196 mg/l (not detected above this) |
| 22 Jul 2025, 11:54 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Jun 2025, 12:13 | 0.404 | 0.404 mg/l |
| 27 May 2025, 10:03 | <0.196 | below 0.196 mg/l (not detected above this) |
| 23 Apr 2025, 11:45 | 0.272 | 0.272 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.07 mg/l
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in milligram per litre on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 0.07 | 0.07 mg/l |
| 23 Jul 2026, 11:28 | 0.087 | 0.087 mg/l |
| 25 Jun 2026, 09:48 | 0.071 | 0.071 mg/l |
| 28 May 2026, 12:21 | 0.025 | 0.025 mg/l |
| 28 Apr 2026, 10:58 | <0.01 | below 0.01 mg/l (not detected above this) |
| 24 Mar 2026, 12:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 24 Feb 2026, 10:44 | 0.012 | 0.012 mg/l |
| 26 Jan 2026, 11:59 | 0.031 | 0.031 mg/l |
| 19 Dec 2025, 11:33 | 0.034 | 0.034 mg/l |
| 26 Nov 2025, 12:00 | 0.035 | 0.035 mg/l |
| 24 Oct 2025, 11:06 | 0.021 | 0.021 mg/l |
| 25 Sep 2025, 11:56 | <0.01 | below 0.01 mg/l (not detected above this) |
| 27 Aug 2025, 10:54 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Jul 2025, 11:54 | 0.015 | 0.015 mg/l |
| 25 Jun 2025, 12:13 | 0.03 | 0.03 mg/l |
| 27 May 2025, 10:03 | <0.01 | below 0.01 mg/l (not detected above this) |
| 23 Apr 2025, 11:45 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
1188 µS/cm
Sampled 26 Aug 2026, 36 days ago · 17 results banked
Also measured in microsiemens per centimetre on another sample material (2GZZ): 16 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 12:36 | 1188 | 1188 µS/cm |
| 23 Jul 2026, 11:28 | 1141 | 1141 µS/cm |
| 25 Jun 2026, 09:48 | 1027 | 1027 µS/cm |
| 28 May 2026, 12:21 | 1093 | 1093 µS/cm |
| 28 Apr 2026, 10:58 | 1046 | 1046 µS/cm |
| 24 Mar 2026, 12:39 | 999 | 999 µS/cm |
| 24 Feb 2026, 10:44 | 1130 | 1130 µS/cm |
| 26 Jan 2026, 11:59 | 1982 | 1982 µS/cm |
| 19 Dec 2025, 11:33 | 1697 | 1697 µS/cm |
| 26 Nov 2025, 12:00 | 3739 | 3739 µS/cm |
| 24 Oct 2025, 11:06 | 11395 | 11395 µS/cm |
| 25 Sep 2025, 11:56 | 1085 | 1085 µS/cm |
| 27 Aug 2025, 10:54 | 786 | 786 µS/cm |
| 22 Jul 2025, 11:54 | 801 | 801 µS/cm |
| 25 Jun 2025, 12:13 | 844 | 844 µS/cm |
| 27 May 2025, 10:03 | 863 | 863 µS/cm |
| 23 Apr 2025, 11:45 | 820 | 820 µS/cm |
Everything measured here
13 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 26 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 17 | Apr 2025 – Aug 2026 | 94.3% 26 Aug 2026 |
| Oxygen, Dissolved, % Saturation 9901 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 103.8% 4 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 17 | Apr 2025 – Aug 2026 | 8.54 mg/l 26 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 12.5 mg/l 4 Mar 2025 |
| Temperature of Water 0076 | River water | 17 | Apr 2025 – Aug 2026 | 20.1 °C 26 Aug 2026 |
| Temperature of Water 0076 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 7.4 °C 4 Mar 2025 |
| pH 0061 | River water | 17 | Apr 2025 – Aug 2026 | 8.42 26 Aug 2026 |
| pH 0061 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 8.38 4 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 17 | Apr 2025 – Aug 2026 | below 0.03 mg/l 26 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 0.036 mg/l 4 Mar 2025 |
| Nitrate as N 0117 | River water | 17 | Apr 2025 – Aug 2026 | below 0.196 mg/l 26 Aug 2026 |
| Nitrate as N 0117 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 1.19 mg/l 4 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 17 | Apr 2025 – Aug 2026 | 0.07 mg/l 26 Aug 2026 |
| Orthophosphate, reactive as P 0180 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | below 0.01 mg/l 4 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 17 | Apr 2025 – Aug 2026 | 1188 µS/cm 26 Aug 2026 |
| Conductivity at 25 C 0077 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 863 µS/cm 4 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 17 | Apr 2025 – Aug 2026 | 250 mg/l 26 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 17 | Apr 2025 – Aug 2026 | below 0.00114 mg/l 26 Aug 2026 |
| Nitrite as N 0118 | River water | 17 | Apr 2025 – Aug 2026 | below 0.004 mg/l 26 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 17 | Apr 2025 – Aug 2026 | below 0.2 mg/l 26 Aug 2026 |
| Phosphorus, Total as P 0348 | River water | 17 | Apr 2025 – Aug 2026 | 0.24 mg/l 26 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 230 mg/l 4 Mar 2025 |
| Ammonia un-ionised as N 0119 | Pond / lake / reservoir water | 15 | Oct 2023 – Mar 2025 | 0.00054 mg/l 4 Mar 2025 |
| Nitrite as N 0118 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 0.0073 mg/l 4 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 1.2 mg/l 4 Mar 2025 |
| Phosphorus, Total as P 0348 | Pond / lake / reservoir water | 16 | Oct 2023 – Mar 2025 | 0.029 mg/l 4 Mar 2025 |
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.