Category:Groundwater and shale gas - Revision history

Dbk: Replaced content with "{{Underconstruction}} "

2026-04-10T08:56:05Z

Replaced content with "{{Underconstruction}} "

← Older revision		Revision as of 09:56, 10 April 2026
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	{{Underconstruction}}		{{Underconstruction}}

	~~==National methane baseline survey: results summary==~~
	~~===Summary results===~~
	~~Since the beginning of the national methane baseline survey in 2012, a total of 248 new groundwater methane samples have been collected and analysed from five areas:~~

	* South Wales
	* East Midlands Province
	* Lancashire and Cheshire Basin
	* Cumbria and Northumberland
	* Southern England comprising Kent, East and West Sussex, Surrey and Hampshire

	A number of groundwater methane values also exist for other areas from previous research projects, in particular central and southern Scotland and parts of south Yorkshire, Nottinghamshire, Lincolnshire and areas around London. These datasets have been combined to provide a summary of methane concentrations in groundwater in these areas.

	~~{\|class="wikitable" style="background-color:#F0F8FF; margin:auto;"~~
	\|-
	~~\| '''Area'''~~
	~~\| '''Concentrations (mg/l)'''~~
	\|
	\|
	~~\| '''Number of samples'''~~
	\|-
	\|
	~~\| '''Minimum'''~~
	~~\| '''Median'''~~
	~~\| '''Maximum'''~~
	\|
	\|-
	~~\| Central/southern Scotland~~
	~~\| <0.0001~~
	~~\| 0.0036~~
	~~\| 1.68~~
	~~\| 31~~
	\|-
	~~\| Lancashire and Cheshire Basins~~
	~~\| 0.0002~~
	~~\| 0.0025~~
	~~\| 0.091~~
	~~\| 23~~
	\|-
	~~\| East Midlands Province~~
	~~\| <0.00005~~
	~~\| 0.0009~~
	~~\| 1.32~~
	~~\| 93~~
	\|-
	~~\| Southern England~~
	~~\| <0.00005~~
	~~\| 0.0013~~
	~~\| 4.72~~
	~~\| 251~~
	\|-
	~~\| South Wales~~
	~~\| <0.0001~~
	~~\| 0.032~~
	~~\| 0.0483~~
	~~\| 25~~
	\|-
	~~\| Cumbria and Northumberland~~
	~~\| <0.0002~~
	~~\| 0.00065~~
	~~\| 1.434~~
	~~\| 16~~
	\|-
	~~\| Cumbria (Environment Agency data)~~
	~~\| <0.1~~
	~~\| <0.5~~
	~~\| 14.2~~
	~~\| 836~~
	\|-
	~~\| Lancashire and Cheshire (Environment Agency data)~~
	~~\| <0.01~~
	~~\| <0.5~~
	~~\| 132~~
	~~\| 2842~~
	\|}
	~~Summary of the methane baseline results~~


	Methane baseline samples have been collected from potable water supplies — either drinking water or groundwater quality monitoring boreholes. None of the samples in the aquifers used for public water supply have exceeded the explosive limit for methane. For additional information on research carried out by BGS on methane in groundwater apart from baseline surveys, please see our methane in UK groundwater research overview and the following key publications:

	* The hydrogeochemistry of methane : evidence from English groundwaters Darling and Gooddy (2006)
	* The potential for methane emissions from groundwaters of the UK Gooddy and Darling (2005)

	~~===Methane in UK Groundwater===~~
	Click on the regions on the map below to see initial results from the survey. In addition to methane data, there is a regional overview of the geology, aquifers and shale gas source rocks present. Areas with adequate methane data have been split by aquifer, in addition to a regional summary. Using data collected as part of the BGS and Environment Agency The Natural (Baseline) Quality of Groundwaters in England and Wales project, there is also a brief overview of the relevant aquifer’s groundwater quality. Further information on chemical indicators and trace elements that are not included in the summary can be found in the individual baseline reports.

	~~Click on the regions on the map below to see results from the survey and more detail can be found in the summary report and recent publication.~~

	~~===Contact===~~
	~~Please contact BGS Enquiries for more information.~~

	[[category:Hydrogeology\| ]]		[[category:Hydrogeology\| ]]

Dbk at 08:18, 10 April 2026

2026-04-10T08:18:33Z

← Older revision		Revision as of 09:18, 10 April 2026
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	Please contact BGS Enquiries for more information.		Please contact BGS Enquiries for more information.

	[[category:~~Hygrogeology~~\| ]]		[[category:Hydrogeology\| ]]

Dbk at 08:18, 10 April 2026

2026-04-10T08:18:11Z

← Older revision		Revision as of 09:18, 10 April 2026
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	Please contact BGS Enquiries for more information.		Please contact BGS Enquiries for more information.

	[[category:~~Groundwater and shale gas~~\| ]]		[[category:Hygrogeology\| ]]

Dbk at 08:15, 10 April 2026

2026-04-10T08:15:48Z

← Older revision		Revision as of 09:15, 10 April 2026
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	Please contact BGS Enquiries for more information.		Please contact BGS Enquiries for more information.

	[[category:~~Hydrogeology~~\| ]]		[[category:Groundwater and shale gas\| ]]

Dbk: /* Summary results */

2026-04-09T14:54:55Z

Summary results

← Older revision		Revision as of 15:54, 9 April 2026
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	* The hydrogeochemistry of methane : evidence from English groundwaters Darling and Gooddy (2006)		* The hydrogeochemistry of methane : evidence from English groundwaters Darling and Gooddy (2006)
	* The potential for methane emissions from groundwaters of the UK Gooddy and Darling (2005)		* The potential for methane emissions from groundwaters of the UK Gooddy and Darling (2005)

	===Methane in UK Groundwater===		===Methane in UK Groundwater===
	Click on the regions on the map below to see initial results from the survey. In addition to methane data, there is a regional overview of the geology, aquifers and shale gas source rocks present. Areas with adequate methane data have been split by aquifer, in addition to a regional summary. Using data collected as part of the BGS and Environment Agency The Natural (Baseline) Quality of Groundwaters in England and Wales project, there is also a brief overview of the relevant aquifer’s groundwater quality. Further information on chemical indicators and trace elements that are not included in the summary can be found in the individual baseline reports.		Click on the regions on the map below to see initial results from the survey. In addition to methane data, there is a regional overview of the geology, aquifers and shale gas source rocks present. Areas with adequate methane data have been split by aquifer, in addition to a regional summary. Using data collected as part of the BGS and Environment Agency The Natural (Baseline) Quality of Groundwaters in England and Wales project, there is also a brief overview of the relevant aquifer’s groundwater quality. Further information on chemical indicators and trace elements that are not included in the summary can be found in the individual baseline reports.

Dbk at 14:00, 9 April 2026

2026-04-09T14:00:06Z

← Older revision		Revision as of 15:00, 9 April 2026
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	Click on the regions on the map below to see results from the survey and more detail can be found in the summary report and recent publication.		Click on the regions on the map below to see results from the survey and more detail can be found in the summary report and recent publication.

	Contact		===Contact===
	Please contact BGS Enquiries for more information.		Please contact BGS Enquiries for more information.

	[[category:Hydrogeology\| ]]		[[category:Hydrogeology\| ]]

Dbk at 13:59, 9 April 2026

2026-04-09T13:59:08Z

← Older revision		Revision as of 14:59, 9 April 2026
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	\| '''Area'''		\| '''Area'''
	\| '''Concentrations (mg/l)'''		\| '''Concentrations (mg/l)'''
			\|
	\|		\|
	\| '''Number of samples'''		\| '''Number of samples'''
	\|-		\|-
	\|		\|
	\| Minimum		\| '''Minimum'''
	\| Median		\| '''Median'''
	\| Maximum		\| '''Maximum'''
	\|		\|
	\|-		\|-

Dbk at 13:58, 9 April 2026

2026-04-09T13:58:12Z

← Older revision		Revision as of 14:58, 9 April 2026
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	\| '''Area'''		\| '''Area'''
	\| '''Concentrations (mg/l)'''		\| '''Concentrations (mg/l)'''
			\|
	\| '''Number of samples'''		\| '''Number of samples'''
	\|- ~~Area Concentration (mg/l) Number of samples~~		\|-
	Minimum Median Maximum		\|
			\| Minimum
			\| Median
			\| Maximum
			\|
	\|-		\|-
	\| Central/southern Scotland		\| Central/southern Scotland

Dbk at 13:56, 9 April 2026

2026-04-09T13:56:31Z

@@ Line 21: / Line 21: @@
 Minimum	Median	Maximum
 |-
-| Central/southern Scotland | <0.0001 | 0.0036	1.68 | 31
+| Central/southern Scotland
 |-
-Lancashire and Cheshire Basins	0.0002	0.0025	0.091	23
+| Lancashire and Cheshire Basins
-East Midlands Province	<0.00005	0.0009	1.32	93
+| 0.0002
-Southern England	<0.00005	0.0013	4.72	251
+| 0.0025
-South Wales	<0.0001	0.032	0.0483	25
+| 0.091
-Cumbria and Northumberland	<0.0002	0.00065	1.434	16
+| 23
-Cumbria (Environment Agency data)	<0.1	<0.5	14.2	836
+|-
-Lancashire and Cheshire (Environment Agency data)	<0.01	<0.5	132	2842
+| East Midlands Province
 Summary of the methane baseline results
-|}
 Methane baseline samples have been collected from potable water supplies — either drinking water or groundwater quality monitoring boreholes. None of the samples in the aquifers used for public water supply have exceeded the explosive limit for methane. For additional information on research carried out by BGS on methane in groundwater apart from baseline surveys, please see our methane in UK groundwater research overview and the following key publications:

Dbk at 13:51, 9 April 2026

2026-04-09T13:51:15Z

← Older revision		Revision as of 14:51, 9 April 2026
Line 13:		Line 13:
	A number of groundwater methane values also exist for other areas from previous research projects, in particular central and southern Scotland and parts of south Yorkshire, Nottinghamshire, Lincolnshire and areas around London. These datasets have been combined to provide a summary of methane concentrations in groundwater in these areas.		A number of groundwater methane values also exist for other areas from previous research projects, in particular central and southern Scotland and parts of south Yorkshire, Nottinghamshire, Lincolnshire and areas around London. These datasets have been combined to provide a summary of methane concentrations in groundwater in these areas.

	Area Concentration (mg/l) Number of samples		{\|class="wikitable" style="background-color:#F0F8FF; margin:auto;"
			\|-
			\| '''Area'''
			\| '''Concentrations (mg/l)'''
			\| '''Number of samples'''
			\|- Area Concentration (mg/l) Number of samples
	Minimum Median Maximum		Minimum Median Maximum
	Central/southern Scotland <0.0001 0.0036 1.68 31		\|-
			\| Central/southern Scotland \| <0.0001 \| 0.0036 1.68 \| 31
			\|-
	Lancashire and Cheshire Basins 0.0002 0.0025 0.091 23		Lancashire and Cheshire Basins 0.0002 0.0025 0.091 23
	East Midlands Province <0.00005 0.0009 1.32 93		East Midlands Province <0.00005 0.0009 1.32 93
Line 24:		Line 31:
	Lancashire and Cheshire (Environment Agency data) <0.01 <0.5 132 2842		Lancashire and Cheshire (Environment Agency data) <0.01 <0.5 132 2842
	Summary of the methane baseline results		Summary of the methane baseline results
			\|}

	Methane baseline samples have been collected from potable water supplies — either drinking water or groundwater quality monitoring boreholes. None of the samples in the aquifers used for public water supply have exceeded the explosive limit for methane. For additional information on research carried out by BGS on methane in groundwater apart from baseline surveys, please see our methane in UK groundwater research overview and the following key publications:		Methane baseline samples have been collected from potable water supplies — either drinking water or groundwater quality monitoring boreholes. None of the samples in the aquifers used for public water supply have exceeded the explosive limit for methane. For additional information on research carried out by BGS on methane in groundwater apart from baseline surveys, please see our methane in UK groundwater research overview and the following key publications:

← Older revision		Revision as of 09:56, 10 April 2026
Line 1:		Line 1:
	{{Underconstruction}}		{{Underconstruction}}

	~~==National methane baseline survey: results summary==~~
	~~===Summary results===~~
	~~Since the beginning of the national methane baseline survey in 2012, a total of 248 new groundwater methane samples have been collected and analysed from five areas:~~

	* South Wales
	* East Midlands Province
	* Lancashire and Cheshire Basin
	* Cumbria and Northumberland
	* Southern England comprising Kent, East and West Sussex, Surrey and Hampshire

	A number of groundwater methane values also exist for other areas from previous research projects, in particular central and southern Scotland and parts of south Yorkshire, Nottinghamshire, Lincolnshire and areas around London. These datasets have been combined to provide a summary of methane concentrations in groundwater in these areas.

	~~{\|class="wikitable" style="background-color:#F0F8FF; margin:auto;"~~
	\|-
	~~\| '''Area'''~~
	~~\| '''Concentrations (mg/l)'''~~
	\|
	\|
	~~\| '''Number of samples'''~~
	\|-
	\|
	~~\| '''Minimum'''~~
	~~\| '''Median'''~~
	~~\| '''Maximum'''~~
	\|
	\|-
	~~\| Central/southern Scotland~~
	~~\| <0.0001~~
	~~\| 0.0036~~
	~~\| 1.68~~
	~~\| 31~~
	\|-
	~~\| Lancashire and Cheshire Basins~~
	~~\| 0.0002~~
	~~\| 0.0025~~
	~~\| 0.091~~
	~~\| 23~~
	\|-
	~~\| East Midlands Province~~
	~~\| <0.00005~~
	~~\| 0.0009~~
	~~\| 1.32~~
	~~\| 93~~
	\|-
	~~\| Southern England~~
	~~\| <0.00005~~
	~~\| 0.0013~~
	~~\| 4.72~~
	~~\| 251~~
	\|-
	~~\| South Wales~~
	~~\| <0.0001~~
	~~\| 0.032~~
	~~\| 0.0483~~
	~~\| 25~~
	\|-
	~~\| Cumbria and Northumberland~~
	~~\| <0.0002~~
	~~\| 0.00065~~
	~~\| 1.434~~
	~~\| 16~~
	\|-
	~~\| Cumbria (Environment Agency data)~~
	~~\| <0.1~~
	~~\| <0.5~~
	~~\| 14.2~~
	~~\| 836~~
	\|-
	~~\| Lancashire and Cheshire (Environment Agency data)~~
	~~\| <0.01~~
	~~\| <0.5~~
	~~\| 132~~
	~~\| 2842~~
	\|}
	~~Summary of the methane baseline results~~


	Methane baseline samples have been collected from potable water supplies — either drinking water or groundwater quality monitoring boreholes. None of the samples in the aquifers used for public water supply have exceeded the explosive limit for methane. For additional information on research carried out by BGS on methane in groundwater apart from baseline surveys, please see our methane in UK groundwater research overview and the following key publications:

	* The hydrogeochemistry of methane : evidence from English groundwaters Darling and Gooddy (2006)
	* The potential for methane emissions from groundwaters of the UK Gooddy and Darling (2005)

	~~===Methane in UK Groundwater===~~
	Click on the regions on the map below to see initial results from the survey. In addition to methane data, there is a regional overview of the geology, aquifers and shale gas source rocks present. Areas with adequate methane data have been split by aquifer, in addition to a regional summary. Using data collected as part of the BGS and Environment Agency The Natural (Baseline) Quality of Groundwaters in England and Wales project, there is also a brief overview of the relevant aquifer’s groundwater quality. Further information on chemical indicators and trace elements that are not included in the summary can be found in the individual baseline reports.

	~~Click on the regions on the map below to see results from the survey and more detail can be found in the summary report and recent publication.~~

	~~===Contact===~~
	~~Please contact BGS Enquiries for more information.~~

	[[category:Hydrogeology\| ]]		[[category:Hydrogeology\| ]]