River Avon downstream of Wolston sewage treatment works

EA name: RIVER AVON D/S WOLSTON STW (also listed as “RIVER AVON DOWNSTREAM WOLSTON STW”)
Environment Agency sampling point MD-04799070 · 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
3 Jul 2026, 10:234 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
11 since 9 Oct 2023 Imported periods: 1 Oct 2023 – 25 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy) · results completed 17 Jul 2026
Where
National Grid 439554, 274917As published, to the nearest 1 m. Open in a map
River, by its own name
Avon
River, by the map
River AvonPlaced on the river its name gives, 2 m from the line.
Next gauge downstream
Stareton On the River Avon · 13 km along the river
Nearest gauge upstream
Wolston On the Wolston Brook · 3.6 km along the riverRugby On the River Avon · 19 km along the river
Why it was sampled
Monitoring (national agency policy) (9 samples)
Environmental monitoring statutory (EU directives) (2 samples)

Results here were completed a median of 14 days after the sample was taken (14 to 14 days, 1 samples).

Main measurements, river water

pH

code 0061

7.62

Sampled 3 Jul 2026, 4 months ago · 11 results banked

7.257.57.7588.258.52024202520269 Oct 2023, 10:23: 7.7710 Jan 2024, 09:22: 88 Apr 2024, 11:55: 8.058 Jul 2024, 11:48: 7.8111 Oct 2024, 11:45: 7.7323 Apr 2025, 12:34: 7.778 Jul 2025, 13:57: 7.466 Oct 2025, 13:18: 8.2628 Jan 2026, 13:55: 8.031 Apr 2026, 16:08: 8.293 Jul 2026, 10:23: 7.62
Every result (11)
SampledResult as publishedReads as
3 Jul 2026, 10:237.62 7.62
1 Apr 2026, 16:088.29 8.29
28 Jan 2026, 13:558.03 8.03
6 Oct 2025, 13:188.26 8.26
8 Jul 2025, 13:577.46 7.46
23 Apr 2025, 12:347.77 7.77
11 Oct 2024, 11:457.73 7.73
8 Jul 2024, 11:487.81 7.81
8 Apr 2024, 11:558.05 8.05
10 Jan 2024, 09:228 8
9 Oct 2023, 10:237.77 7.77

Everything measured here

5 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 5 rows
DeterminandMaterialResults First – lastLatest result
pH 0061 River water 11 Oct 2023 – Jul 2026 7.62 3 Jul 2026
Calcium, Dissolved 0239 River water 11 Oct 2023 – Jul 2026 97 mg/l 3 Jul 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 11 Oct 2023 – Jul 2026 6.3 mg/l 3 Jul 2026
Iron, Dissolved 6460 River water 11 Oct 2023 – Jul 2026 34 µg/l 3 Jul 2026
Magnesium, Dissolved 0235 River water 11 Oct 2023 – Jul 2026 17 mg/l 3 Jul 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.