sampling point
Pont Pill At Trethake Mill

Description	PONT PILL AT TRETHAKE MILL
Sampling point ID	SW-81511046
Type	Freshwater – Rivers
Status	open
Location	easting northing: 215558 53134 lat lon: 50.349161, -4.593851
Area	Devon And Cornwall
Sub-Area	West Devon And Cornwall
Summary	366 samples taken between 2024 and 2000

Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.

40 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
Calcium - Ca
Chlorophyl-A
ColformsPre
Cond @ 20C
Cond @ 25C
Cu Filtered
E.coli C-MF
F Coli Pre
Hardness
Hdnss Ca
Hdnss Mg
IE Pres
MST Filter
Magnesium-Mg
N Inorganic
N Organic
N Oxidised
N-Kjeldahl
NH3 un-ion
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Orthophospht
Oxygen Diss
Phosphate
Phosphorus-P
Potassium- K
SiO2 Rv
Sld Sus@105C
StrepF PMF
Temp Water
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 366 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 11 Mar 2024 to 29 May 2024

Notation	Determinand	Units	11 Mar 2024 12:21	22 Mar 2024 11:14	26 Mar 2024 12:03	3 Apr 2024 09:38	8 Apr 2024 10:54	17 Apr 2024 11:44	23 Apr 2024 11:39	15 May 2024 11:39	20 May 2024 10:11	29 May 2024 11:52
0061	pH			7.84				7.9		7.96
0076	Temperature of Water	°C	11.5	11	11.2	10.6	11.1	10.6	12	12.7	12	12.8
0077	Conductivity at 25 C	μs/cm		308				312		331
0085	BOD : 5 Day ATU	mg/l		< 1				< 1		< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	0.054	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0113	Nitrogen, Organic as N	mg/l	0.37	0.27	0.27	0.446			0.07
0114	Nitrogen, Kjeldahl as N	mg/l	0.4	0.3	0.3	0.5	< 1.0e-05		0.1			< 1.0e-05
0116	Nitrogen, Total Oxidised as N	mg/l	6.6	6.7	6	5.9	6.4	6.7	6.9	6.8	7.1	6.9
0117	Nitrate as N	mg/l	6.59	6.69	5.99	5.89	6.39	6.69	6.89	6.79	7.09	6.89
0118	Nitrite as N	mg/l	0.0074	0.0074	0.0097	0.0088	0.0098	0.011	0.014	0.0092	0.0082	0.01
0119	Ammonia un-ionised as N	mg/l		< 0.00041				< 0.00046		< 0.00061
0135	Solids, Suspended at 105 C	mg/l	6.5	6.6	11	8.8	9.7		5.6	5	5.3	4.6
0162	Alkalinity to pH 4.5 as CaCO3	mg/l		70				73		78
0180	Orthophosphate, reactive as P	mg/l	0.018	0.016	0.029	0.021	0.02	0.021	0.013	0.022	0.026	0.027
0192	Phosphate :- {TIP}	mg/l	0.036	0.02	0.035	0.038	< 0.02		0.023	< 0.02	< 0.02	0.034
0348	Phosphorus, Total as P	mg/l	0.033	0.032	0.052	0.037	0.031		0.017	0.011	0.032	0.049
9686	Nitrogen, Total as N	mg/l	7	7	6.3	6.4	6.4		7	2.3	6.8	6.9
9901	Oxygen, Dissolved, % Saturation	%		99.2				100.9		99.4
9924	Oxygen, Dissolved as O2	mg/l		10.9				11.2		10.5

Samples from 4 Jan 2024 to 1 Mar 2024

Notation	Determinand	Units	4 Jan 2024 10:03	8 Jan 2024 11:19	17 Jan 2024 12:05	22 Jan 2024 10:13	29 Jan 2024 13:56	7 Feb 2024 12:39	13 Feb 2024 10:43	19 Feb 2024 12:05	26 Feb 2024 11:31	1 Mar 2024 14:27
0061	pH				8.01					7.56
0076	Temperature of Water	°C	9.9	8.2	8.1	9.4	11.2	11.2	10.3	11.4	9.3	9.9
0077	Conductivity at 25 C	μs/cm			326					286
0085	BOD : 5 Day ATU	mg/l								1.1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	0.04	< 0.03	< 0.03	0.22	< 0.03	< 0.03	< 0.03
0113	Nitrogen, Organic as N	mg/l	0.37	0.27	0.37	0.26	0.57	0.37	0.48	0.27	0.07	0.07
0114	Nitrogen, Kjeldahl as N	mg/l	0.4	0.3	0.4	0.3	0.6	0.4	0.7	0.3	0.1	0.1
0116	Nitrogen, Total Oxidised as N	mg/l	6.6	6.8	7.5	6.8	7	6.4	6.6	6.1	6.5	6.6
0117	Nitrate as N	mg/l	6.59	6.79	7.49	6.78	6.99	6.37	6.58	6.09	6.49	6.59
0118	Nitrite as N	mg/l	0.0075	0.007	0.0081	0.019	0.012	0.029	0.018	0.0075	0.0053	0.0081
0119	Ammonia un-ionised as N	mg/l			< 0.00048					< 0.00022
0135	Solids, Suspended at 105 C	mg/l	14	11	6.2	8.6	5.4	11	23	22	8.5	12
0162	Alkalinity to pH 4.5 as CaCO3	mg/l			73					65
0180	Orthophosphate, reactive as P	mg/l	0.024	0.022	0.017	0.036	0.024	0.036	0.047	0.023	0.024	0.022
0192	Phosphate :- {TIP}	mg/l	0.04	0.037	0.03	0.052	0.035	0.053	0.098	0.046	0.032	0.04
0348	Phosphorus, Total as P	mg/l	0.047	0.039	0.032	0.069	0.037	0.065	0.14	0.052	0.067	0.051
9686	Nitrogen, Total as N	mg/l	7	7.1	7.9	7.1	7.6	6.8	7.3	6.4	6.6	6.7
9901	Oxygen, Dissolved, % Saturation	%			99.8					98.2
9924	Oxygen, Dissolved as O2	mg/l			11.8					10.7

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sampling point Pont Pill At Trethake Mill

Determinands

Sampling results

Samples from 11 Mar 2024 to 29 May 2024

Samples from 4 Jan 2024 to 1 Mar 2024

sampling point
Pont Pill At Trethake Mill