Coombe Adit
EA name: COOMBE ADIT
Environment Agency sampling point SW-81931010 · 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
- 21 Aug 2026, 14:0241 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 20 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- Minewater Monitoring (national agency policy)
- Where
- National Grid 196015, 51620As 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), 1 m from the line.
- Next gauge downstream
- Trenowth On the River Fal · 2.8 km along the river
- Why it was sampled
- Monitoring (national agency policy) (35 samples)
Everything measured here
51 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 102 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 87.8% 3 Jan 2024 |
| Oxygen, Dissolved, % Saturation 9901 | Minewater | 30 | Nov 2023 – Aug 2026 | 92.8% 21 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 9.5 mg/l 3 Jan 2024 |
| Oxygen, Dissolved as O2 9924 | Minewater | 30 | Nov 2023 – Aug 2026 | 9.89 mg/l 21 Aug 2026 |
| Temperature of Water 0076 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 11.7 °C 3 Jan 2024 |
| Temperature of Water 0076 | Minewater | 31 | Nov 2023 – Aug 2026 | 12.4 °C 21 Aug 2026 |
| pH 0061 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 5.69 3 Jan 2024 |
| pH 0061 | Minewater | 31 | Nov 2023 – Aug 2026 | 5.86 21 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 0.03 mg/l 3 Jan 2024 |
| Ammoniacal Nitrogen as N 0111 | Minewater | 31 | Nov 2023 – Aug 2026 | below 0.03 mg/l 21 Aug 2026 |
| Conductivity at 25 C 0077 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 234 µS/cm 3 Jan 2024 |
| Conductivity at 25 C 0077 | Minewater | 30 | Feb 2024 – Aug 2026 | 268 µS/cm 21 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 17 mg/l 3 Jan 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | Minewater | 31 | Nov 2023 – Aug 2026 | 13 mg/l 21 Aug 2026 |
| Aluminium 6057 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 150 µg/l 3 Jan 2024 |
| Aluminium 6057 | Minewater | 32 | Nov 2023 – Aug 2026 | 48 µg/l 21 Aug 2026 |
| Aluminium, Dissolved 6037 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 140 µg/l 3 Jan 2024 |
| Aluminium, Dissolved 6037 | Minewater | 32 | Nov 2023 – Aug 2026 | 40 µg/l 21 Aug 2026 |
| Arsenic 6046 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 14 µg/l 3 Jan 2024 |
| Arsenic 6046 | Minewater | 32 | Nov 2023 – Aug 2026 | 8 µg/l 21 Aug 2026 |
| Arsenic, Dissolved 6045 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 3.6 µg/l 3 Jan 2024 |
| Arsenic, Dissolved 6045 | Minewater | 32 | Nov 2023 – Aug 2026 | 2.8 µg/l 21 Aug 2026 |
| Barium 6062 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 10 µg/l 3 Jan 2024 |
| Barium 6062 | Minewater | 32 | Nov 2023 – Aug 2026 | below 10 µg/l 21 Aug 2026 |
| Barium, Dissolved 9446 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 10 µg/l 3 Jan 2024 |
| Barium, Dissolved 9446 | Minewater | 32 | Nov 2023 – Aug 2026 | below 10 µg/l 21 Aug 2026 |
| Boron 6059 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 100 µg/l 3 Jan 2024 |
| Boron 6059 | Minewater | 32 | Nov 2023 – Aug 2026 | below 100 µg/l 21 Aug 2026 |
| Boron, Dissolved 9447 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 100 µg/l 3 Jan 2024 |
| Boron, Dissolved 9447 | Minewater | 32 | Nov 2023 – Aug 2026 | below 100 µg/l 21 Aug 2026 |
| Cadmium 0108 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 1.9 µg/l 3 Jan 2024 |
| Cadmium 0108 | Minewater | 32 | Nov 2023 – Aug 2026 | 1.7 µg/l 21 Aug 2026 |
| Cadmium, Dissolved 0106 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 1.9 µg/l 3 Jan 2024 |
| Cadmium, Dissolved 0106 | Minewater | 32 | Nov 2023 – Aug 2026 | 1.6 µg/l 21 Aug 2026 |
| Calcium 0241 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 9.7 mg/l 3 Jan 2024 |
| Calcium 0241 | Minewater | 32 | Nov 2023 – Aug 2026 | 11 mg/l 21 Aug 2026 |
| Calcium, Dissolved 0239 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 9.7 mg/l 3 Jan 2024 |
| Calcium, Dissolved 0239 | Minewater | 32 | Nov 2023 – Aug 2026 | 11 mg/l 21 Aug 2026 |
| Chloride 0172 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 23 mg/l 3 Jan 2024 |
| Chloride 0172 | Minewater | 32 | Nov 2023 – Aug 2026 | 25 mg/l 21 Aug 2026 |
| Chromium 3164 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 0.5 µg/l 3 Jan 2024 |
| Chromium 3164 | Minewater | 32 | Nov 2023 – Aug 2026 | below 0.5 µg/l 21 Aug 2026 |
| Chromium, Dissolved 3409 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 0.5 µg/l 3 Jan 2024 |
| Chromium, Dissolved 3409 | Minewater | 32 | Nov 2023 – Aug 2026 | below 0.5 µg/l 21 Aug 2026 |
| Copper 6452 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 65 µg/l 3 Jan 2024 |
| Copper 6452 | Minewater | 32 | Nov 2023 – Aug 2026 | 27 µg/l 21 Aug 2026 |
| Copper, Dissolved 6450 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 64 µg/l 3 Jan 2024 |
| Copper, Dissolved 6450 | Minewater | 32 | Nov 2023 – Aug 2026 | 25 µg/l 21 Aug 2026 |
| Hardness, Total as CaCO3 0158 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 61.3 mg/l 3 Jan 2024 |
| Hardness, Total as CaCO3 0158 | Minewater | 32 | Nov 2023 – Aug 2026 | 72.7 mg/l 21 Aug 2026 |
| Ionic Balance 7044 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | -3.78% 3 Jan 2024 |
| Ionic Balance 7044 | Minewater | 31 | Nov 2023 – Aug 2026 | -4.48% 21 Aug 2026 |
| Iron 6051 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 980 µg/l 3 Jan 2024 |
| Iron 6051 | Minewater | 32 | Nov 2023 – Aug 2026 | 3500 µg/l 21 Aug 2026 |
| Iron, Dissolved 6460 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 620 µg/l 3 Jan 2024 |
| Iron, Dissolved 6460 | Minewater | 32 | Nov 2023 – Aug 2026 | 3100 µg/l 21 Aug 2026 |
| Lead 0050 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 2 µg/l 3 Jan 2024 |
| Lead 0050 | Minewater | 32 | Nov 2023 – Aug 2026 | below 2 µg/l 21 Aug 2026 |
| Lead, Dissolved 0052 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 2 µg/l 3 Jan 2024 |
| Lead, Dissolved 0052 | Minewater | 32 | Nov 2023 – Aug 2026 | below 2 µg/l 21 Aug 2026 |
| Lithium 6064 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 100 µg/l 3 Jan 2024 |
| Lithium 6064 | Minewater | 32 | Nov 2023 – Aug 2026 | below 100 µg/l 21 Aug 2026 |
| Lithium, Dissolved 4201 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 100 µg/l 3 Jan 2024 |
| Lithium, Dissolved 4201 | Minewater | 32 | Nov 2023 – Aug 2026 | below 100 µg/l 21 Aug 2026 |
| Magnesium 0237 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 9.1 mg/l 3 Jan 2024 |
| Magnesium 0237 | Minewater | 32 | Nov 2023 – Aug 2026 | 11 mg/l 21 Aug 2026 |
| Magnesium, Dissolved 0235 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 9 mg/l 3 Jan 2024 |
| Magnesium, Dissolved 0235 | Minewater | 32 | Nov 2023 – Aug 2026 | 11 mg/l 21 Aug 2026 |
| Manganese 6050 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 680 µg/l 3 Jan 2024 |
| Manganese 6050 | Minewater | 32 | Nov 2023 – Aug 2026 | 2000 µg/l 21 Aug 2026 |
| Manganese, Dissolved 6458 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 670 µg/l 3 Jan 2024 |
| Manganese, Dissolved 6458 | Minewater | 32 | Nov 2023 – Aug 2026 | 2000 µg/l 21 Aug 2026 |
| Nickel 6462 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 28 µg/l 3 Jan 2024 |
| Nickel 6462 | Minewater | 32 | Nov 2023 – Aug 2026 | 34 µg/l 21 Aug 2026 |
| Nickel, Dissolved 3410 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 28 µg/l 3 Jan 2024 |
| Nickel, Dissolved 3410 | Minewater | 32 | Nov 2023 – Aug 2026 | 33 µg/l 21 Aug 2026 |
| Nitrite as N 0118 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | below 0.004 mg/l 3 Jan 2024 |
| Nitrite as N 0118 | Minewater | 32 | Nov 2023 – Aug 2026 | below 0.004 mg/l 21 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 3.7 mg/l 3 Jan 2024 |
| Nitrogen, Total Oxidised as N 0116 | Minewater | 32 | Nov 2023 – Aug 2026 | 1.8 mg/l 21 Aug 2026 |
| Potassium 0211 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 2.6 mg/l 3 Jan 2024 |
| Potassium 0211 | Minewater | 32 | Nov 2023 – Aug 2026 | 2.6 mg/l 21 Aug 2026 |
| Potassium, Dissolved 0209 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 2.6 mg/l 3 Jan 2024 |
| Potassium, Dissolved 0209 | Minewater | 32 | Nov 2023 – Aug 2026 | 2.7 mg/l 21 Aug 2026 |
| Redox Potential 6988 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 200.8 millivolt 3 Jan 2024 |
| Redox Potential 6988 | Minewater | 28 | Feb 2024 – Aug 2026 | 138.5 millivolt 21 Aug 2026 |
| Silica, reactive as SiO2 0182 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 14 mg/l 3 Jan 2024 |
| Silica, reactive as SiO2 0182 | Minewater | 32 | Nov 2023 – Aug 2026 | 16 mg/l 21 Aug 2026 |
| Sodium 0207 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 15 mg/l 3 Jan 2024 |
| Sodium 0207 | Minewater | 32 | Nov 2023 – Aug 2026 | 16 mg/l 21 Aug 2026 |
| Sodium, Dissolved 0205 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 15 mg/l 3 Jan 2024 |
| Sodium, Dissolved 0205 | Minewater | 32 | Nov 2023 – Aug 2026 | 16 mg/l 21 Aug 2026 |
| Strontium 6063 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 58 µg/l 3 Jan 2024 |
| Strontium 6063 | Minewater | 32 | Nov 2023 – Aug 2026 | 60 µg/l 21 Aug 2026 |
| Strontium, Filtered 6693 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 58 µg/l 3 Jan 2024 |
| Strontium, Filtered 6693 | Minewater | 32 | Nov 2023 – Aug 2026 | 61 µg/l 21 Aug 2026 |
| Sulphate as SO4 0183 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 41 mg/l 3 Jan 2024 |
| Sulphate as SO4 0183 | Minewater | 32 | Nov 2023 – Aug 2026 | 64 mg/l 21 Aug 2026 |
| Zinc 6455 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 640 µg/l 3 Jan 2024 |
| Zinc 6455 | Minewater | 32 | Nov 2023 – Aug 2026 | 980 µg/l 21 Aug 2026 |
| Zinc, Dissolved 3408 | Minewater (flowing/pumped) | 3 | Oct 2023 – Jan 2024 | 650 µg/l 3 Jan 2024 |
| Zinc, Dissolved 3408 | Minewater | 32 | Nov 2023 – Aug 2026 | 970 µg/l 21 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.