Blackdene Burn downstream of Plawsworth sewage treatment works Discharge
EA name: BLACKDENE BN D/S PLAWSWORTH STW DISCHARG (also listed as “BLACKDENE BURN D/S PLAWSWORTH STW DISCHARGE”)
Environment Agency sampling point NE-44500159 · 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
- 5 Aug 2026, 13:1757 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 5 since 7 Apr 2026 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 426821, 547691As published, to the nearest 1 m. Open in a map
- River, by its own name
- Blackdene Burn
- River, by the map
- Blackdene BurnPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Chester-Le-Street On the River Wear · 6.5 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.8%
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 91.8 | 91.8% |
| 3 Jul 2026, 09:19 | 93.4 | 93.4% |
| 8 Jun 2026, 08:53 | 99.6 | 99.6% |
| 1 May 2026, 08:00 | 98.7 | 98.7% |
| 7 Apr 2026, 08:34 | 100.2 | 100.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.37 mg/l
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 9.37 | 9.37 mg/l |
| 3 Jul 2026, 09:19 | 9.62 | 9.62 mg/l |
| 8 Jun 2026, 08:53 | 10.4 | 10.4 mg/l |
| 1 May 2026, 08:00 | 10.3 | 10.3 mg/l |
| 7 Apr 2026, 08:34 | 11.2 | 11.2 mg/l |
Water temperature
code 0076 · °C
14.3 °C
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 14.3 | 14.3 °C |
| 3 Jul 2026, 09:19 | 13.9 | 13.9 °C |
| 8 Jun 2026, 08:53 | 13.1 | 13.1 °C |
| 1 May 2026, 08:00 | 13.1 | 13.1 °C |
| 7 Apr 2026, 08:34 | 10.3 | 10.3 °C |
pH
code 0061
8.2
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 8.2 | 8.2 |
| 3 Jul 2026, 09:19 | 8.1 | 8.1 |
| 8 Jun 2026, 08:53 | 8.2 | 8.2 |
| 1 May 2026, 08:00 | 8 | 8 |
| 7 Apr 2026, 08:34 | 8.1 | 8.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.32 mg/l
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 0.32 | 0.32 mg/l |
| 3 Jul 2026, 09:19 | 0.28 | 0.28 mg/l |
| 8 Jun 2026, 08:53 | 0.29 | 0.29 mg/l |
| 1 May 2026, 08:00 | 0.28 | 0.28 mg/l |
| 7 Apr 2026, 08:34 | 0.27 | 0.27 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.189 mg/l
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 0.189 | 0.189 mg/l |
| 3 Jul 2026, 09:19 | 0.266 | 0.266 mg/l |
| 8 Jun 2026, 08:53 | 0.228 | 0.228 mg/l |
| 1 May 2026, 08:00 | 0.249 | 0.249 mg/l |
| 7 Apr 2026, 08:34 | 0.3 | 0.3 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Jul 2026, 09:19 | <0.1 | below 0.1 mg/l (not detected above this) |
| 8 Jun 2026, 08:53 | <0.01 | below 0.01 mg/l (not detected above this) |
| 1 May 2026, 08:00 | <0.01 | below 0.01 mg/l (not detected above this) |
| 7 Apr 2026, 08:34 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
1689 µS/cm
Sampled 5 Aug 2026, 57 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 13:17 | 1689 | 1689 µS/cm |
| 3 Jul 2026, 09:19 | 1668 | 1668 µS/cm |
| 8 Jun 2026, 08:53 | 1641 | 1641 µS/cm |
| 1 May 2026, 08:00 | 1630 | 1630 µS/cm |
| 7 Apr 2026, 08:34 | 1620 | 1620 µS/cm |
Everything measured here
41 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 41 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 5 | Apr 2026 – Aug 2026 | 91.8% 5 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 5 | Apr 2026 – Aug 2026 | 9.37 mg/l 5 Aug 2026 |
| Temperature of Water 0076 | River water | 5 | Apr 2026 – Aug 2026 | 14.3 °C 5 Aug 2026 |
| pH 0061 | River water | 5 | Apr 2026 – Aug 2026 | 8.2 5 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 5 | Apr 2026 – Aug 2026 | 0.32 mg/l 5 Aug 2026 |
| Nitrate as N 0117 | River water | 5 | Apr 2026 – Aug 2026 | 0.189 mg/l 5 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 5 | Apr 2026 – Aug 2026 | below 0.01 mg/l 5 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 5 | Apr 2026 – Aug 2026 | 1689 µS/cm 5 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 5 | Apr 2026 – Aug 2026 | above 500 mg/l 5 Aug 2026 |
| Aluminium, Dissolved 6037 | River water | 5 | Apr 2026 – Aug 2026 | below 20 µg/l 5 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 5 | Apr 2026 – Aug 2026 | 0.00799 mg/l 5 Aug 2026 |
| Barium, Dissolved 9446 | River water | 5 | Apr 2026 – Aug 2026 | 23 µg/l 5 Aug 2026 |
| Bicarbonate as HCO3 9584 | River water | 5 | Apr 2026 – Aug 2026 | above 610 mg/l 5 Aug 2026 |
| Boron, Dissolved 9447 | River water | 5 | Apr 2026 – Aug 2026 | 370 µg/l 5 Aug 2026 |
| Cadmium, Dissolved 0106 | River water | 5 | Apr 2026 – Aug 2026 | below 0.01 µg/l 5 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 5 | Apr 2026 – Aug 2026 | 130 mg/l 5 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 5 | Apr 2026 – Aug 2026 | 0.81 mg/l 5 Aug 2026 |
| Chloride 0172 | River water | 5 | Apr 2026 – Aug 2026 | 70 mg/l 5 Aug 2026 |
| Chromium, Dissolved 3409 | River water | 5 | Apr 2026 – Aug 2026 | below 0.5 µg/l 5 Aug 2026 |
| Copper : BLM Bioavailable 4821 | River water | 5 | Apr 2026 – Aug 2026 | 0.62 µg/l 5 Aug 2026 |
| Copper, Dissolved 6450 | River water | 5 | Apr 2026 – Aug 2026 | 0.9 µg/l 5 Aug 2026 |
| Hardness, Total as CaCO3 0158 | River water | 5 | Apr 2026 – Aug 2026 | 563 mg/l 5 Aug 2026 |
| Ionic Balance: Dissolved 3386 | River water | 5 | Apr 2026 – Aug 2026 | 2.37% 5 Aug 2026 |
| Iron, Dissolved 6460 | River water | 5 | Apr 2026 – Aug 2026 | 33 µg/l 5 Aug 2026 |
| Lead : BLM Bioavailable 3377 | River water | 5 | Apr 2026 – Aug 2026 | 1 µg/l 5 Aug 2026 |
| Lead, Dissolved 0052 | River water | 5 | Apr 2026 – Aug 2026 | below 2 µg/l 5 Aug 2026 |
| Lithium, Dissolved 4201 | River water | 5 | Apr 2026 – Aug 2026 | 410 µg/l 5 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 5 | Apr 2026 – Aug 2026 | 58 mg/l 5 Aug 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 5 | Apr 2026 – Aug 2026 | 680 µg/l 5 Aug 2026 |
| Manganese, Dissolved 6458 | River water | 5 | Apr 2026 – Aug 2026 | 830 µg/l 5 Aug 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 5 | Apr 2026 – Aug 2026 | 4 µg/l 5 Aug 2026 |
| Nickel, Dissolved 3410 | River water | 5 | Apr 2026 – Aug 2026 | 4.2 µg/l 5 Aug 2026 |
| Nitrite as N 0118 | River water | 5 | Apr 2026 – Aug 2026 | 0.011 mg/l 5 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 5 | Apr 2026 – Aug 2026 | 0.2 mg/l 5 Aug 2026 |
| Potassium, Dissolved 0209 | River water | 5 | Apr 2026 – Aug 2026 | 18 mg/l 5 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 5 | Apr 2026 – Aug 2026 | 12 mg/l 5 Aug 2026 |
| Sodium, Dissolved 0205 | River water | 5 | Apr 2026 – Aug 2026 | 180 mg/l 5 Aug 2026 |
| Strontium, Filtered 6693 | River water | 5 | Apr 2026 – Aug 2026 | 1000 µg/l 5 Aug 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 5 | Apr 2026 – Aug 2026 | 320 mg/l 5 Aug 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 5 | Apr 2026 – Aug 2026 | 1.6 µg/l 5 Aug 2026 |
| Zinc, Dissolved 3408 | River water | 5 | Apr 2026 – Aug 2026 | 2.4 µg/l 5 Aug 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.