River Monnow, Rockfield Park House

EA name: RIVER MONNOW, ROCKFIELD PARK HOUSE (also listed as “RSN0502 RIVER MONNOW, ROCKFIELD PARK HOUSE”)
Environment Agency sampling point MD-RSN0502 · 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
8 Jun 2026, 11:424 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
3 since 9 Feb 2026 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy)
Where
National Grid 349043, 215976As published, to the nearest 1 m. Open in a map
River, by its own name
Monnow
River, by the map
Afon MynwyPlaced on the river its name gives, 2 m from the line.
Next gauge downstream
Monnow Gate River Station On the Monnow · 7.5 km along the river
Nearest gauge upstream
Skenfrith River Station On the Monnow · 8.5 km along the river
Why it was sampled
Monitoring (national agency policy) (3 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

96.9%

Sampled 8 Jun 2026, 4 months ago · 3 results banked

96.59797.59898.5%2024202520269 Feb 2026, 12:57: 98.3%6 Mar 2026, 13:24: 97.9%8 Jun 2026, 11:42: 96.9%
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:4296.9 96.9%
6 Mar 2026, 13:2497.9 97.9%
9 Feb 2026, 12:5798.3 98.3%

Dissolved oxygen

as O2 · code 9924 · mg/l

9.74 mg/l

Sampled 8 Jun 2026, 4 months ago · 3 results banked

9.51010.51111.5mg/l2024202520269 Feb 2026, 12:57: 11.5 mg/l6 Mar 2026, 13:24: 11.2 mg/l8 Jun 2026, 11:42: 9.74 mg/l
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:429.74 9.74 mg/l
6 Mar 2026, 13:2411.2 11.2 mg/l
9 Feb 2026, 12:5711.5 11.5 mg/l

Water temperature

code 0076 · °C

15 °C

Sampled 8 Jun 2026, 4 months ago · 3 results banked

810121416°C2024202520269 Feb 2026, 12:57: 8.6 °C6 Mar 2026, 13:24: 9.4 °C8 Jun 2026, 11:42: 15 °C
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:4215 15 °C
6 Mar 2026, 13:249.4 9.4 °C
9 Feb 2026, 12:578.6 8.6 °C

pH

code 0061

8.4

Sampled 8 Jun 2026, 4 months ago · 3 results banked

88.18.28.38.42024202520269 Feb 2026, 12:57: 8.026 Mar 2026, 13:24: 8.358 Jun 2026, 11:42: 8.4
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:428.4 8.4
6 Mar 2026, 13:248.35 8.35
9 Feb 2026, 12:578.02 8.02

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 8 Jun 2026, 4 months ago · 3 results banked

0.030.0310.032mg/l2024202520269 Feb 2026, 12:57: 0.032 mg/l6 Mar 2026, 13:24: below 0.03 mg/l (not detected above this)8 Jun 2026, 11:42: below 0.03 mg/l (not detected above this)
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:42<0.03 below 0.03 mg/l (not detected above this)
6 Mar 2026, 13:24<0.03 below 0.03 mg/l (not detected above this)
9 Feb 2026, 12:570.032 0.032 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

1.89 mg/l

Sampled 8 Jun 2026, 4 months ago · 3 results banked

1.822.22.4mg/l2024202520269 Feb 2026, 12:57: 1.8 mg/l6 Mar 2026, 13:24: 2.3 mg/l8 Jun 2026, 11:42: 1.89 mg/l
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:421.89 1.89 mg/l
6 Mar 2026, 13:242.3 2.3 mg/l
9 Feb 2026, 12:571.8 1.8 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.054 mg/l

Sampled 8 Jun 2026, 4 months ago · 3 results banked

0.030.040.050.06mg/l2024202520269 Feb 2026, 12:57: 0.057 mg/l6 Mar 2026, 13:24: 0.03 mg/l8 Jun 2026, 11:42: 0.054 mg/l
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:420.054 0.054 mg/l
6 Mar 2026, 13:240.03 0.03 mg/l
9 Feb 2026, 12:570.057 0.057 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

465 µS/cm

Sampled 8 Jun 2026, 4 months ago · 3 results banked

250300350400450500µS/cm2024202520269 Feb 2026, 12:57: 271 µS/cm6 Mar 2026, 13:24: 387 µS/cm8 Jun 2026, 11:42: 465 µS/cm
Every result (3)
SampledResult as publishedReads as
8 Jun 2026, 11:42465 465 µS/cm
6 Mar 2026, 13:24387 387 µS/cm
9 Feb 2026, 12:57271 271 µS/cm

Everything measured here

152 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 152 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 3 Feb 2026 – Jun 2026 96.9% 8 Jun 2026
Oxygen, Dissolved as O2 9924 River water 3 Feb 2026 – Jun 2026 9.74 mg/l 8 Jun 2026
Temperature of Water 0076 River water 3 Feb 2026 – Jun 2026 15 °C 8 Jun 2026
pH 0061 River water 3 Feb 2026 – Jun 2026 8.4 8 Jun 2026
Ammoniacal Nitrogen as N 0111 River water 3 Feb 2026 – Jun 2026 below 0.03 mg/l 8 Jun 2026
Nitrate as N 0117 River water 3 Feb 2026 – Jun 2026 1.89 mg/l 8 Jun 2026
Orthophosphate, reactive as P 0180 River water 3 Feb 2026 – Jun 2026 0.054 mg/l 8 Jun 2026
Conductivity at 25 C 0077 River water 3 Feb 2026 – Jun 2026 465 µS/cm 8 Jun 2026
(Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
10:2 Fluorotelomer sulfonic acid 2994 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
2H,2H,3H,3H-Perfluorooctanoic acid 2989 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
2H-Perfluoro-2-decenoic acid 2888 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
3-Perfluoroheptylpropanoic acid 2925 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
3:3 Fluorotelomer carboxylic acid 2926 River water 1 Jun 2026 – Jun 2026 below 0.004 µg/l 8 Jun 2026
4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
4:2 Fluorotelomer sulfonic acid 2987 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
5:1:2 Fluorotelomer betaine 2887 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
5:3 Fluorotelomer betaine 2886 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
6:2 Fluorotelomer phosphate diester 2986 River water 1 Jun 2026 – Jun 2026 below 0.004 µg/l 8 Jun 2026
6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
6:2 Fluorotelomer sulfonamide betaine 2985 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
6:2 Fluorotelomer sulfonic acid 2984 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
6:2/8:2 Fluorotelomer phosphate diester 2884 River water 1 Jun 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
6:6 Perfluorophosphinic acid 2883 River water 1 Jun 2026 – Jun 2026 below 0.004 µg/l 8 Jun 2026
6:8 Perfluorophosphinic acid 2882 River water 1 Jun 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
8:2 Fluorotelomer phosphate diester 2880 River water 1 Jun 2026 – Jun 2026 below 0.004 µg/l 8 Jun 2026
8:2 Fluorotelomer sulfonic acid 2983 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
8:8 Perfluorophosphinic acid 2879 River water 1 Jun 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Aldicarb 9344 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Aldicarb sulfoxide 8806 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Aldoxycarb :- {Aldicarb Sulfone} 8807 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 3 Feb 2026 – Jun 2026 200 mg/l 8 Jun 2026
Aluminium, Dissolved 6037 River water 3 Feb 2026 – Jun 2026 below 20 µg/l 8 Jun 2026
Aminomethylphosphonic acid 7125 River water 3 Feb 2026 – Jun 2026 below 0.1 µg/l 8 Jun 2026
Ammonia un-ionised as N 0119 River water 3 Feb 2026 – Jun 2026 below 0.00079 mg/l 8 Jun 2026
Asulam 3004 River water 2 Mar 2026 – Jun 2026 below 0.02 µg/l 8 Jun 2026
Azoxystrobin 5050 River water 3 Feb 2026 – Jun 2026 below 0.02 µg/l 8 Jun 2026
Barium, Dissolved 9446 River water 3 Feb 2026 – Jun 2026 260 µg/l 8 Jun 2026
Benzo(a)Pyrene 6399 River water 3 Feb 2026 – Jun 2026 0.0011 µg/l 8 Jun 2026
Benzo(b)Fluoranthene 0731 River water 3 Feb 2026 – Jun 2026 0.0011 µg/l 8 Jun 2026
Benzo(g,h,i)Perylene 0714 River water 3 Feb 2026 – Jun 2026 0.0009 µg/l 8 Jun 2026
Benzo(k)Fluoranthene 0733 River water 3 Feb 2026 – Jun 2026 0.00052 µg/l 8 Jun 2026
Boron, Dissolved 9447 River water 3 Feb 2026 – Jun 2026 below 100 µg/l 8 Jun 2026
Cadmium, Dissolved 0106 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Calcium, Dissolved 0239 River water 3 Feb 2026 – Jun 2026 74 mg/l 8 Jun 2026
Carbaryl 9343 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Carbendazim 3475 River water 2 Mar 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Carbetamide 9073 River water 2 Mar 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Carbofuran 3086 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 3 Feb 2026 – Jun 2026 1.8 mg/l 8 Jun 2026
Chloridazon 6760 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Chloride 0172 River water 3 Feb 2026 – Jun 2026 15 mg/l 8 Jun 2026
Chlorotoluron 9348 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Chloroxuron 3399 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Chromium, Dissolved 3409 River water 3 Feb 2026 – Jun 2026 below 0.5 µg/l 8 Jun 2026
cis-Permethrin 9341 River water 2 Feb 2026 – Mar 2026 below 0.0001 µg/l 6 Mar 2026
Copper : BLM Bioavailable 4821 River water 3 Feb 2026 – Jun 2026 0.33 µg/l 8 Jun 2026
Copper, Dissolved 6450 River water 3 Feb 2026 – Jun 2026 0.73 µg/l 8 Jun 2026
Cypermethrin 0073 River water 2 Feb 2026 – Mar 2026 0.00002 µg/l 6 Mar 2026
Cypermethrin Identification 5446 River water 2 Feb 2026 – Mar 2026 1 text result 6 Mar 2026
Di(2-ethylhexyl) phthalate :- {DEHP} 6724 River water 2 Feb 2026 – Mar 2026 below 0.2 µg/l 6 Mar 2026
Diflurobenzuron 9345 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Diuron 3811 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Ethiofencarb 6955 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Ethirimol 5047 River water 3 Feb 2026 – Jun 2026 below 0.05 µg/l 8 Jun 2026
Fenuron 9339 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Flow Type 2896 River water 3 Feb 2026 – Jun 2026 Moderate Flow 8 Jun 2026
Fluoranthene 0736 River water 3 Feb 2026 – Jun 2026 0.0026 µg/l 8 Jun 2026
GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 River water 2 Mar 2026 – Jun 2026 1 text result 8 Jun 2026
Glyphosate 3007 River water 3 Feb 2026 – Jun 2026 below 0.1 µg/l 8 Jun 2026
Hardness, Calcium 0163 River water 3 Feb 2026 – Jun 2026 185 mg/l 8 Jun 2026
Hardness, Total as CaCO3 0158 River water 3 Feb 2026 – Jun 2026 219 mg/l 8 Jun 2026
Hexafluoropropylene oxide dimer acid (Gen X) 2981 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Hexafluoropropylene oxide trimer acid 2980 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Indeno(1,2,3-cd)pyrene 0746 River water 3 Feb 2026 – Jun 2026 0.001 µg/l 8 Jun 2026
Iron, Dissolved 6460 River water 3 Feb 2026 – Jun 2026 below 30 µg/l 8 Jun 2026
Isoproturon 3117 River water 2 Feb 2026 – Mar 2026 below 0.01 µg/l 6 Mar 2026
Lead : BLM Bioavailable 3377 River water 3 Feb 2026 – Jun 2026 0.03 µg/l 8 Jun 2026
Lead, Dissolved 0052 River water 3 Feb 2026 – Jun 2026 below 0.1 µg/l 8 Jun 2026
Linuron 3118 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Lithium, Dissolved 4201 River water 3 Feb 2026 – Jun 2026 below 100 µg/l 8 Jun 2026
Magnesium, Dissolved 0235 River water 3 Feb 2026 – Jun 2026 8.2 mg/l 8 Jun 2026
Manganese : BLM Bioavailable 4820 River water 3 Feb 2026 – Jun 2026 14 µg/l 8 Jun 2026
Manganese, Dissolved 6458 River water 3 Feb 2026 – Jun 2026 14 µg/l 8 Jun 2026
Methabenzthiazuron 7053 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Methiocarb 6971 River water 3 Feb 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Methomyl 6972 River water 2 Mar 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Metoxuron 3130 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Metsulfuron-methyl 9861 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Monolinuron 3925 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Monuron 3400 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
N-Ethylperfluorooctanesulfonamide 2977 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
N-methylperfluorooctanesulfonamide 2975 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
Neburon 9756 River water 3 Feb 2026 – Jun 2026 below 0.01 µg/l 8 Jun 2026
Nickel : BLM Bioavailable 3878 River water 3 Feb 2026 – Jun 2026 0.18 µg/l 8 Jun 2026
Nickel, Dissolved 3410 River water 3 Feb 2026 – Jun 2026 below 0.5 µg/l 8 Jun 2026
Nitrite as N 0118 River water 3 Feb 2026 – Jun 2026 0.013 mg/l 8 Jun 2026
Nitrogen, Total as N 9686 River water 3 Feb 2026 – Jun 2026 2.2 mg/l 8 Jun 2026
Nitrogen, Total Oxidised as N 0116 River water 3 Feb 2026 – Jun 2026 1.9 mg/l 8 Jun 2026
Oxamyl 6980 River water 2 Mar 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Perfluoro(2-ethoxyethane)sulfonic acid 2924 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoro(4-methoxybutanoic) acid 2923 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoro-3,6-dioxaheptanoic acid 2922 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoro-3-methoxypropanoic acid 2921 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoro-4-ethylcyclohexanesulfonic acid 2973 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorobutanesulfonic acid 2972 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorobutanoic acid 2995 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorodecanesulfonic acid 2969 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorodecanoic acid 8892 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorododecane sulfonic acid 2968 River water 1 Jun 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Perfluorododecanoic acid 8894 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
Perfluoroheptanesulfonic acid 2967 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoroheptanoic acid 8889 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorohexane sulfonamido amine 2874 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorohexanesulfonamide 2965 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorohexanesulfonic acid (B) 2944 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorohexanesulfonic acid (L) 2964 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorohexanoic acid 8888 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorononanesulfonic acid 2963 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorononanoic acid 8891 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorooctadecanoic acid 2962 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
Perfluorooctanesulfonamide 2961 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorooctanesulfonic acid (branched) 2960 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorooctanesulfonic acid (total) 2958 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorooctanoate anion 9274 River water 3 Feb 2026 – Jun 2026 below 0.0006 µg/l 8 Jun 2026
Perfluorooctanoic acid 8890 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluorooctylsulphonate anion 9276 River water 3 Feb 2026 – Jun 2026 0.00035 µg/l 8 Jun 2026
Perfluoropentanesulfonic acid 2957 River water 1 Jun 2026 – Jun 2026 below 0.0005 µg/l 8 Jun 2026
Perfluoropentanoic acid 8887 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Perfluorotetradecanoic acid 8895 River water 1 Jun 2026 – Jun 2026 below 0.006 µg/l 8 Jun 2026
Perfluorotridecanoic acid 2955 River water 1 Jun 2026 – Jun 2026 below 0.002 µg/l 8 Jun 2026
Perfluoroundecane sulfonic acid 2953 River water 1 Jun 2026 – Jun 2026 below 0.004 µg/l 8 Jun 2026
Perfluoroundecanoic acid 8893 River water 1 Jun 2026 – Jun 2026 below 0.001 µg/l 8 Jun 2026
Phosphorus, Total as P 0348 River water 3 Feb 2026 – Jun 2026 0.074 mg/l 8 Jun 2026
Potassium, Dissolved 0209 River water 3 Feb 2026 – Jun 2026 2.2 mg/l 8 Jun 2026
Propoxur 6987 River water 3 Feb 2026 – Jun 2026 below 0.005 µg/l 8 Jun 2026
Silica, reactive as SiO2 0182 River water 3 Feb 2026 – Jun 2026 7.4 mg/l 8 Jun 2026
Sodium, Dissolved 0205 River water 3 Feb 2026 – Jun 2026 11 mg/l 8 Jun 2026
Solids, Suspended at 105 C 0135 River water 3 Feb 2026 – Jun 2026 5.7 mg/l 8 Jun 2026
Strontium, Filtered 6693 River water 3 Feb 2026 – Jun 2026 260 µg/l 8 Jun 2026
Sulcotrione 5042 River water 3 Feb 2026 – Jun 2026 below 0.1 µg/l 8 Jun 2026
Sulphate, Dissolved as SO4 7859 River water 3 Feb 2026 – Jun 2026 below 10 mg/l 8 Jun 2026
trans-Permethrin 9342 River water 2 Feb 2026 – Mar 2026 below 0.0001 µg/l 6 Mar 2026
Zinc : BLM Bioavailable 4822 River water 3 Feb 2026 – Jun 2026 0.53 µg/l 8 Jun 2026
Zinc, Dissolved 3408 River water 3 Feb 2026 – Jun 2026 0.87 µg/l 8 Jun 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.