Non-wholesome water - Revision history

Designing Buildings at 07:04, 18 November 2021

2021-11-18T07:04:00Z

← Older revision		Revision as of 07:04, 18 November 2021
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	= Introduction =		= Introduction =

−	Non-wholesome water is ~~identified as~~ water that moves through commercial or industrial water distribution systems but does not comply with the requirements of regulations made under Section 67 (Standards of wholesomeness) of the Water Industry Act 1991. The regulations made under this Section are, for England, the Private Water Supplies Regulations 2009 (SI 2009/3101), for Wales the Private Water Supplied (Wales) Regulations (SI 2010/66) and for England the Water Supply (Water Quality) Regulations 2000 (SI 2000/3184 as amended), and, for Wales, the Water Supply (Water Quality) Regulations 2001 (SI 2001/3911 as amended). Water that meets these requirements is referred to as wholesome water.	+	Non-wholesome water is water that moves through commercial or industrial water distribution systems but does not comply with the requirements of regulations made under Section 67 (Standards of wholesomeness) of the Water Industry Act 1991. The regulations made under this Section are, for England, the Private Water Supplies Regulations 2009 (SI 2009/3101), for Wales the Private Water Supplied (Wales) Regulations (SI 2010/66) and for England the Water Supply (Water Quality) Regulations 2000 (SI 2000/3184 as amended), and, for Wales, the Water Supply (Water Quality) Regulations 2001 (SI 2001/3911 as amended). Water that meets these requirements is referred to as wholesome water.

	= Sources =		= Sources =

−	Non-wholesome water may come from ~~various~~ sources~~. These can include~~:	+	Non-wholesome water may come from sources including:

−	* Industrial processes (such treated wastewater from sewage treatment plants).	+	* Industrial processes (such as treated wastewater from sewage treatment plants).
	* Groundwater abstraction (from wells, bore holes or springs).		* Groundwater abstraction (from wells, bore holes or springs).
	* Surface water (from rivers, streams, ponds and so on).		* Surface water (from rivers, streams, ponds and so on).
−		+	* Water reuse systems such as rainwater harvesting or treated greywater (from baths, basins and showers).
−	~~It may also come from water~~ reuse systems such as rainwater harvesting or treated greywater (from baths, basins and showers).	+

	= Usage =		= Usage =

−	~~Under certain conditions, non~~-wholesome water can be used as an alternative to mains water in applications that do not require wholesome water~~. The purpose of this is to reduce the need for wholesome mains water for unnecessary activities.~~	+	Non-wholesome water can be used as an alternative to mains water in applications that do not require wholesome water, such as:
−		+
−	~~Some uses of non-wholesome water may include~~:	+

	* Toilet flushing. Poor quality of non-wholesome water is an acceptable alternative, since there is little likelihood of dangerous human contact.		* Toilet flushing. Poor quality of non-wholesome water is an acceptable alternative, since there is little likelihood of dangerous human contact.
−	* Landscaping. For general purposes, non-wholesome water is suitable for most irrigation ~~situations~~, ~~except~~ when it could be used on vegetation that is intended for consumption.	+	* Landscaping. For general purposes, non-wholesome water is suitable for most irrigation purposes, other than when it could be used on vegetation that is intended for consumption.
−	* Laundry. Non-wholesome water that has been properly treated (so it does not contain any potentially problematic microorganisms) ~~is generally believed to~~ be suitable for laundry.	+	* Laundry. Non-wholesome water that has been properly treated (so it does not contain any potentially problematic microorganisms) can be suitable for laundry.

−	It is not advisable to use poor quality non-wholesome water in situations where the stream - or even spray from the stream - could come in contact with people, animals, birds, edible vegetation and so on.	+	It is not advisable to use poor quality non-wholesome water in situations where the stream - or even spray from the stream - could come into contact with people, animals, birds, edible vegetation and so on.

	= Safety issues =		= Safety issues =

−	Guidelines for ~~usage~~ of non-wholesome water can be found in ~~Part~~ G of the Building Regulations.	+	Guidelines for the use of non-wholesome water can be found in Approved Document G of the Building Regulations.

	If non-wholesome water is being considered as an alternative source, the reliability of its delivery should be evaluated for possible risks. Its treatment system should also be designed to minimise the impact on water quality due to:		If non-wholesome water is being considered as an alternative source, the reliability of its delivery should be evaluated for possible risks. Its treatment system should also be designed to minimise the impact on water quality due to:
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	* Failure of any components.		* Failure of any components.
	* Failure to undertake any necessary maintenance.		* Failure to undertake any necessary maintenance.
−	* Power failure ~~(where appropriate)~~.	+	* Power failure.
	* Other measures identified in a risk assessment.		* Other measures identified in a risk assessment.

−	An alternative supply to non-wholesome water should be sourced if there is a question regarding reliability. If a wholesome supply is used for backup, there must be no opportunity for contamination of the wholesome water supply by the ~~alternative~~ non-wholesome source.	+	An alternative supply to non-wholesome water should be sourced if there is a question regarding reliability. If a wholesome supply is used for backup, there must be no opportunity for contamination of the wholesome water supply by the non-wholesome source.

	Non-wholesome water must not be inadvertently supplied in place of wholesome water and it should not be permitted to contaminate wholesome water systems, for example, by misconnection. Pipes carrying non-wholesome water should be marked clearly, using different types of pipework to avoid misconnection. Colour coding can also be useful, as long as non-wholesome water is not transported in blue pipes, since this colour is typically associated with wholesome water mains.		Non-wholesome water must not be inadvertently supplied in place of wholesome water and it should not be permitted to contaminate wholesome water systems, for example, by misconnection. Pipes carrying non-wholesome water should be marked clearly, using different types of pipework to avoid misconnection. Colour coding can also be useful, as long as non-wholesome water is not transported in blue pipes, since this colour is typically associated with wholesome water mains.

−	Marking is ~~also~~ important if distinctions between pipe types are covered by insulation. According to [https://www.thenbs.com/knowledge/when-is-water-wholesome guidance from NBS], non-wholesome pipework labels inside dwellings should be:	+	Marking is important if distinctions between pipe types are covered by insulation. According to [https://www.thenbs.com/knowledge/when-is-water-wholesome guidance from NBS], non-wholesome pipework labels inside dwellings should be:

	* Green in accordance with BS 4800:1989 colour 12 D 45.		* Green in accordance with BS 4800:1989 colour 12 D 45.
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	* Approved Document G.		* Approved Document G.
		+	* Black water.
	* Do our water quality standards demonstrate to the public that their water supply is clean?		* Do our water quality standards demonstrate to the public that their water supply is clean?
		+	* Foul water.
	* Greywater.		* Greywater.
	* Mains water.		* Mains water.
	* Potable water.		* Potable water.
		+	* Rainwater harvesting.
		+	* Reclaimed water.
	* Types of water.		* Types of water.
	* Water quality.		* Water quality.

Editor at 17:21, 17 November 2021

2021-11-17T17:21:42Z

← Older revision		Revision as of 17:21, 17 November 2021
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	* Types of water.		* Types of water.
	* Water quality.		* Water quality.
−	* Wholesome water.

	= External resources =		= External resources =

Editor at 17:17, 17 November 2021

2021-11-17T17:17:02Z

← Older revision		Revision as of 17:17, 17 November 2021
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	{\|		{\|
	\|width="100%"\|		\|width="100%"\|
−	[[File:Borehole.jpg]]	+	[[File:Borehole.jpg\|link=File:Borehole.jpg]]

−	To the south of this monitoring ~~borehole~~ in Oareborough Lane, West Berkshire, is an old quarry that has been used as a landfill. It is surrounded by a series of observation wells for groundwater sampling.	+	To the south of this monitoring bore hole in Oareborough Lane, West Berkshire, is an old quarry that has been used as a landfill. It is surrounded by a series of observation wells for groundwater sampling.
	\|}		\|}

−	Introduction	+	= Introduction =

	Non-wholesome water is identified as water that moves through commercial or industrial water distribution systems but does not comply with the requirements of regulations made under Section 67 (Standards of wholesomeness) of the Water Industry Act 1991. The regulations made under this Section are, for England, the Private Water Supplies Regulations 2009 (SI 2009/3101), for Wales the Private Water Supplied (Wales) Regulations (SI 2010/66) and for England the Water Supply (Water Quality) Regulations 2000 (SI 2000/3184 as amended), and, for Wales, the Water Supply (Water Quality) Regulations 2001 (SI 2001/3911 as amended). Water that meets these requirements is referred to as wholesome water.		Non-wholesome water is identified as water that moves through commercial or industrial water distribution systems but does not comply with the requirements of regulations made under Section 67 (Standards of wholesomeness) of the Water Industry Act 1991. The regulations made under this Section are, for England, the Private Water Supplies Regulations 2009 (SI 2009/3101), for Wales the Private Water Supplied (Wales) Regulations (SI 2010/66) and for England the Water Supply (Water Quality) Regulations 2000 (SI 2000/3184 as amended), and, for Wales, the Water Supply (Water Quality) Regulations 2001 (SI 2001/3911 as amended). Water that meets these requirements is referred to as wholesome water.

−	Sources	+	= Sources =

	Non-wholesome water may come from various sources. These can include:		Non-wholesome water may come from various sources. These can include:

−	Industrial processes (such treated wastewater from sewage treatment plants)	+	* Industrial processes (such treated wastewater from sewage treatment plants).
−		+	* Groundwater abstraction (from wells, bore holes or springs).
−	Groundwater abstraction (from wells, bore holes or springs).	+	* Surface water (from rivers, streams, ponds and so on).
−		+
−	Surface water (from ~~sources such as~~ rivers, streams, ponds and so on).	+

	It may also come from water reuse systems such as rainwater harvesting or treated greywater (from baths, basins and showers).		It may also come from water reuse systems such as rainwater harvesting or treated greywater (from baths, basins and showers).

−	~~<br />~~	+	= Usage =
−		+
−		+
−	Usage	+

	Under certain conditions, non-wholesome water can be used as an alternative to mains water in applications that do not require wholesome water. The purpose of this is to reduce the need for wholesome mains water for unnecessary activities.		Under certain conditions, non-wholesome water can be used as an alternative to mains water in applications that do not require wholesome water. The purpose of this is to reduce the need for wholesome mains water for unnecessary activities.
Line 31:		Line 26:
	Some uses of non-wholesome water may include:		Some uses of non-wholesome water may include:

−	Toilet flushing. Poor quality of non-wholesome water is an acceptable alternative, since there is little likelihood of dangerous human contact.	+	* Toilet flushing. Poor quality of non-wholesome water is an acceptable alternative, since there is little likelihood of dangerous human contact.
		+	* Landscaping. For general purposes, non-wholesome water is suitable for most irrigation situations, except when it could be used on vegetation that is intended for consumption.
		+	* Laundry. Non-wholesome water that has been properly treated (so it does not contain any potentially problematic microorganisms) is generally believed to be suitable for laundry.

−	~~Landscaping. For general purposes,~~ non-wholesome water ~~is suitable for most irrigation~~ situations~~, except when it~~ could ~~be used on~~ vegetation ~~that is intended for consumption~~.	+	It is not advisable to use poor quality non-wholesome water in situations where the stream - or even spray from the stream - could come in contact with people, animals, birds, edible vegetation and so on.

−	~~Laundry. Non-wholesome water that has been properly treated (so it does not contain any potentially problematic microorganisms) is generally believed to be suitable for laundry.~~	+	= Safety issues =
−		+
−	~~It is not advisable to use poor quality non-wholesome water in situations where the stream - or even spray from the stream - could come in contact with people or animals.~~	+
−		+
−	Safety issues	+

	Guidelines for usage of non-wholesome water can be found in Part G of the Building Regulations.		Guidelines for usage of non-wholesome water can be found in Part G of the Building Regulations.

−	If a non-wholesome water is being considered as an alternative source, the reliability of its delivery should be evaluated. Its treatment system should also be designed to minimise the impact on water quality of:	+	If non-wholesome water is being considered as an alternative source, the reliability of its delivery should be evaluated for possible risks. Its treatment system should also be designed to minimise the impact on water quality due to:

−	Failure of any components.	+	* Failure of any components.
−		+	* Failure to undertake any necessary maintenance.
−	Failure to undertake any necessary maintenance.	+	* Power failure (where appropriate).
−		+	* Other measures identified in a risk assessment.
−	Power failure (where appropriate).	+
−		+
−	Other measures identified in a risk assessment.	+

	An alternative supply to non-wholesome water should be sourced if there is a question regarding reliability. If a wholesome supply is used for backup, there must be no opportunity for contamination of the wholesome water supply by the alternative non-wholesome source.		An alternative supply to non-wholesome water should be sourced if there is a question regarding reliability. If a wholesome supply is used for backup, there must be no opportunity for contamination of the wholesome water supply by the alternative non-wholesome source.
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	Non-wholesome water must not be inadvertently supplied in place of wholesome water and it should not be permitted to contaminate wholesome water systems, for example, by misconnection. Pipes carrying non-wholesome water should be marked clearly, using different types of pipework to avoid misconnection. Colour coding can also be useful, as long as non-wholesome water is not transported in blue pipes, since this colour is typically associated with wholesome water mains.		Non-wholesome water must not be inadvertently supplied in place of wholesome water and it should not be permitted to contaminate wholesome water systems, for example, by misconnection. Pipes carrying non-wholesome water should be marked clearly, using different types of pipework to avoid misconnection. Colour coding can also be useful, as long as non-wholesome water is not transported in blue pipes, since this colour is typically associated with wholesome water mains.

−	Marking is also important if distinctions between pipe types are covered by insulation. According to guidance from NBS,	+	Marking is also important if distinctions between pipe types are covered by insulation. According to [https://www.thenbs.com/knowledge/when-is-water-wholesome guidance from NBS], non-wholesome pipework labels inside dwellings should be:

−	~~https~~:~~//www~~.~~thenbs~~.~~com/knowledge/when~~-is-water-~~wholesome~~	+	* Green in accordance with BS 4800:1989 colour 12 D 45.
		+	* Not less than 100mm long.
		+	* Marked 'NON-WHOLESOME WATER' in black letters not less than 5mm high (note that other guides recommend different wording, such as 'Reclaimed water', 'Non-potable water' or 'Rainwater' – any term may be used provided that the message is clear)
		+	* Self-adhesive, wrap-around or mechanically fixed to the pipe at intervals not greater than 500mm and at key connection points.

−	~~non~~-~~wholesome pipework labels inside dwellings~~ should be:	+	For large-scale reclaimed water pipelines (in commercial/industrial settings such as multi-occupancy buildings, schools, offices) and where the pipes are insulated, marking in accordance with the principles of BS1710: Identification of pipelines should be used. Points of use should also be clearly identified by a green and black label stating 'non-wholesome water' or by a prohibition sign stating that the water comes from an alternative system.

−	~~Green in accordance with BS 4800:1989 colour 12 D 45.~~	+	= Related articles on Designing Buildings =
−		+
−	~~Not less than 100mm long.~~	+
−		+
−	Marked 'NON-WHOLESOME WATER' in black letters not less than 5mm high (note that other guides recommend different wording, such as 'Reclaimed water', 'Non-potable water' or 'Rainwater' – any term may be used provided that the message is clear)	+
−		+
−	~~Self-adhesive, wrap-around or mechanically fixed to the pipe at intervals not greater than 500mm and at key connection points.~~	+
−		+
−	For large-scale reclaimed water pipelines (in commercial/industrial settings such as multi-occupancy buildings, schools, offices) and where the pipes are insulated, marking in accordance with the principles of BS1710: Identification of pipelines should be used. Points of use should also be clearly identified by a green and black label stating 'non-wholesome water' or by a prohibition sign stating that the water comes from an alternative system.	+

−	~~External resources~~	+	* Approved Document G.
		+	* Do our water quality standards demonstrate to the public that their water supply is clean?
		+	* Greywater.
		+	* Mains water.
		+	* Potable water.
		+	* Types of water.
		+	* Water quality.
		+	* Wholesome water.

−	~~When is water wholesome?~~	+	= External resources =

−	~~01 June 2010 \| by Nick Price~~	+	* Gov.uk, [https://www.gov.uk/government/publications/sanitation-hot-water-safety-and-water-efficiency-approved-document-g Approved Document G (Sanitation, hot water safety and water efficiency)].
		+	* NBS, [https://www.thenbs.com/knowledge/when-is-water-wholesome When is water wholesome?]

−	~~https~~:~~//www.thenbs.com/knowledge/when-is-water-wholesome~~	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Regulation]] [[Category:Definitions]] [[Category:Water]] [[Category:Regulations]]

Editor: Created page with "{| |width="100%"| File:Borehole.jpg To the south of this monitoring borehole in Oareborough Lane, West Berkshire, is an old quarry that has been used as a landfill. It is su..."

2021-11-17T16:55:12Z

Created page with "{| |width="100%"| File:Borehole.jpg To the south of this monitoring borehole in Oareborough Lane, West Berkshire, is an old quarry that has been used as a landfill. It is su..."

New page

{|
|width="100%"|
[[File:Borehole.jpg]]

To the south of this monitoring borehole in Oareborough Lane, West Berkshire, is an old quarry that has been used as a landfill. It is surrounded by a series of observation wells for groundwater sampling.
|}

Introduction

Non-wholesome water is identified as water that moves through commercial or industrial water distribution systems but does not comply with the requirements of regulations made under Section 67 (Standards of wholesomeness) of the Water Industry Act 1991. The regulations made under this Section are, for England, the Private Water Supplies Regulations 2009 (SI 2009/3101), for Wales the Private Water Supplied (Wales) Regulations (SI 2010/66) and for England the Water Supply (Water Quality) Regulations 2000 (SI 2000/3184 as amended), and, for Wales, the Water Supply (Water Quality) Regulations 2001 (SI 2001/3911 as amended). Water that meets these requirements is referred to as wholesome water.

Sources

Non-wholesome water may come from various sources. These can include:

Industrial processes (such treated wastewater from sewage treatment plants)

Groundwater abstraction (from wells, bore holes or springs).

Surface water (from sources such as rivers, streams, ponds and so on).

It may also come from water reuse systems such as rainwater harvesting or treated greywater (from baths, basins and showers).

<br />

Usage

Under certain conditions, non-wholesome water can be used as an alternative to mains water in applications that do not require wholesome water. The purpose of this is to reduce the need for wholesome mains water for unnecessary activities.

Some uses of non-wholesome water may include:

Toilet flushing. Poor quality of non-wholesome water is an acceptable alternative, since there is little likelihood of dangerous human contact.

Landscaping. For general purposes, non-wholesome water is suitable for most irrigation situations, except when it could be used on vegetation that is intended for consumption.

Laundry. Non-wholesome water that has been properly treated (so it does not contain any potentially problematic microorganisms) is generally believed to be suitable for laundry.

It is not advisable to use poor quality non-wholesome water in situations where the stream - or even spray from the stream - could come in contact with people or animals.

Safety issues

Guidelines for usage of non-wholesome water can be found in Part G of the Building Regulations.

If a non-wholesome water is being considered as an alternative source, the reliability of its delivery should be evaluated. Its treatment system should also be designed to minimise the impact on water quality of:

Failure of any components.

Failure to undertake any necessary maintenance.

Power failure (where appropriate).

Other measures identified in a risk assessment.

An alternative supply to non-wholesome water should be sourced if there is a question regarding reliability. If a wholesome supply is used for backup, there must be no opportunity for contamination of the wholesome water supply by the alternative non-wholesome source.

Non-wholesome water must not be inadvertently supplied in place of wholesome water and it should not be permitted to contaminate wholesome water systems, for example, by misconnection. Pipes carrying non-wholesome water should be marked clearly, using different types of pipework to avoid misconnection. Colour coding can also be useful, as long as non-wholesome water is not transported in blue pipes, since this colour is typically associated with wholesome water mains.

Marking is also important if distinctions between pipe types are covered by insulation. According to guidance from NBS,

https://www.thenbs.com/knowledge/when-is-water-wholesome

non-wholesome pipework labels inside dwellings should be:

Green in accordance with BS 4800:1989 colour 12 D 45.

Not less than 100mm long.

Marked 'NON-WHOLESOME WATER' in black letters not less than 5mm high (note that other guides recommend different wording, such as 'Reclaimed water', 'Non-potable water' or 'Rainwater' – any term may be used provided that the message is clear)

Self-adhesive, wrap-around or mechanically fixed to the pipe at intervals not greater than 500mm and at key connection points.

For large-scale reclaimed water pipelines (in commercial/industrial settings such as multi-occupancy buildings, schools, offices) and where the pipes are insulated, marking in accordance with the principles of BS1710: Identification of pipelines should be used. Points of use should also be clearly identified by a green and black label stating 'non-wholesome water' or by a prohibition sign stating that the water comes from an alternative system.

External resources

When is water wholesome?

01 June 2010 | by Nick Price

https://www.thenbs.com/knowledge/when-is-water-wholesome