River Erewash downstream of Pinxton sewage treatment works
EA name: RIVER EREWASH D/S PINXTON STW (also listed as “RIVER EREWASH DOWNSTREAM PINXTON STW”)
Environment Agency sampling point MD-45221460 · 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
- 9 Sep 2026, 08:4829 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 17 since 19 Dec 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy) · results completed 16 Sep 2026
- Where
- National Grid 444802, 353907As published, to the nearest 1 m. Open in a map
- River, by its own name
- Erewash
- River, by the map
- River ErewashPlaced on the river its name gives, 12 m from the line.
- Next gauge downstream
- Shipley Gate On the River Erewash · 13 km along the river
- Nearest gauge upstream
- Pinxton On the River Erewash · 0.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (14 samples)
Environmental monitoring statutory (EU directives) (3 samples)
Results here were completed a median of 12 days after the sample was taken (7 to 13 days, 4 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
88.2%
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 88.2 | 88.2% |
| 24 Aug 2026, 10:05 | 83.2 | 83.2% |
| 6 Jul 2026, 10:12 | 82.8 | 82.8% |
| 16 Jun 2026, 09:39 | 90.5 | 90.5% |
| 22 May 2026, 13:02 | 87.6 | 87.6% |
| 16 Apr 2026, 11:58 | 105.3 | 105.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.01 mg/l
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 9.01 | 9.01 mg/l |
| 24 Aug 2026, 10:05 | 8.39 | 8.39 mg/l |
| 6 Jul 2026, 10:12 | 7.79 | 7.79 mg/l |
| 16 Jun 2026, 09:39 | 9.04 | 9.04 mg/l |
| 22 May 2026, 13:02 | 8.99 | 8.99 mg/l |
| 16 Apr 2026, 11:58 | 11.5 | 11.5 mg/l |
Water temperature
code 0076 · °C
14.3 °C
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 14.3 | 14.3 °C |
| 24 Aug 2026, 10:05 | 14.9 | 14.9 °C |
| 6 Jul 2026, 10:12 | 18.2 | 18.2 °C |
| 16 Jun 2026, 09:39 | 15.3 | 15.3 °C |
| 22 May 2026, 13:02 | 14.1 | 14.1 °C |
| 16 Apr 2026, 11:58 | 11.3 | 11.3 °C |
pH
code 0061
7.67
Sampled 9 Sep 2026, 29 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 7.67 | 7.67 |
| 24 Aug 2026, 10:05 | 7.29 | 7.29 |
| 6 Jul 2026, 10:12 | 7.21 | 7.21 |
| 16 Jun 2026, 09:39 | 7.55 | 7.55 |
| 22 May 2026, 13:02 | 7.43 | 7.43 |
| 16 Apr 2026, 11:58 | 7.81 | 7.81 |
| 28 Jan 2026, 10:10 | 7.92 | 7.92 |
| 20 Oct 2025, 08:37 | 7.79 | 7.79 |
| 1 Jul 2025, 09:01 | 7.29 | 7.29 |
| 7 Apr 2025, 09:17 | 7.62 | 7.62 |
| 10 Jan 2025, 10:47 | 7.89 | 7.89 |
| 3 Oct 2024, 13:17 | 7.78 | 7.78 |
| 11 Jul 2024, 12:20 | 7.76 | 7.76 |
| 9 Apr 2024, 14:09 | 7.77 | 7.77 |
| 10 Jan 2024, 11:11 | 7.79 | 7.79 |
| 19 Dec 2023, 09:59 | 7.64 | 7.64 |
| 19 Dec 2023, 09:48 | 7.62 | 7.62 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.071 mg/l
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 0.071 | 0.071 mg/l |
| 24 Aug 2026, 10:05 | 0.069 | 0.069 mg/l |
| 6 Jul 2026, 10:12 | 0.046 | 0.046 mg/l |
| 16 Jun 2026, 09:39 | 0.056 | 0.056 mg/l |
| 22 May 2026, 13:02 | 0.16 | 0.16 mg/l |
| 16 Apr 2026, 11:58 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
13 mg/l
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 13 | 13 mg/l |
| 24 Aug 2026, 10:05 | 16 | 16 mg/l |
| 6 Jul 2026, 10:12 | 19 | 19 mg/l |
| 16 Jun 2026, 09:39 | 14 | 14 mg/l |
| 22 May 2026, 13:02 | 13.9 | 13.9 mg/l |
| 16 Apr 2026, 11:58 | 8.47 | 8.47 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.031 mg/l
Sampled 9 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:48 | 0.031 | 0.031 mg/l |
| 24 Aug 2026, 10:05 | 0.04 | 0.04 mg/l |
| 6 Jul 2026, 10:12 | 0.052 | 0.052 mg/l |
| 16 Jun 2026, 09:39 | 0.086 | 0.086 mg/l |
| 22 May 2026, 13:02 | 0.12 | 0.12 mg/l |
| 16 Apr 2026, 11:58 | 0.042 | 0.042 mg/l |
Everything measured here
17 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 17 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 6 | Apr 2026 – Sep 2026 | 88.2% 9 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 6 | Apr 2026 – Sep 2026 | 9.01 mg/l 9 Sep 2026 |
| Temperature of Water 0076 | River water | 6 | Apr 2026 – Sep 2026 | 14.3 °C 9 Sep 2026 |
| pH 0061 | River water | 17 | Dec 2023 – Sep 2026 | 7.67 9 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Apr 2026 – Sep 2026 | 0.071 mg/l 9 Sep 2026 |
| Nitrate as N 0117 | River water | 6 | Apr 2026 – Sep 2026 | 13 mg/l 9 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 6 | Apr 2026 – Sep 2026 | 0.031 mg/l 9 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 6 | Apr 2026 – Sep 2026 | 140 mg/l 9 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 6 | Apr 2026 – Sep 2026 | 0.00084 mg/l 9 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 6 | Apr 2026 – Sep 2026 | below 4 mg/l 9 Sep 2026 |
| Calcium, Dissolved 0239 | River water | 13 | Dec 2023 – Jul 2026 | 81 mg/l 6 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Dec 2023 – Jul 2026 | 5 mg/l 6 Jul 2026 |
| Iron, Dissolved 6460 | River water | 13 | Dec 2023 – Jul 2026 | 110 µg/l 6 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 13 | Dec 2023 – Jul 2026 | 30 mg/l 6 Jul 2026 |
| Nitrite as N 0118 | River water | 6 | Apr 2026 – Sep 2026 | 0.036 mg/l 9 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Apr 2026 – Sep 2026 | 13 mg/l 9 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Apr 2026 – Sep 2026 | 5.1 mg/l 9 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.