ASTM E2635-22 PDF
Standard Practice for Water Conservation in Buildings Through In-Situ Water Reclamation
Standard Practice for Water Conservation in Buildings Through In-Situ Water Reclamation
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 11
- Дата публикации:
- 1 декабря 2022 г.
- Издание:
- E2635
- ICS:
- 13.060.25
SIGNIFICANCE AND USE 4.1 General—As the world’s population increases, so does the need for water to meet various needs, as well as the need to manage wastewater. Already accepted and endorsed by the public in many urban and agricultural areas, properly implemented nonpotable water reuse projects can help communities meet water demand and supply challenges without any known significant health risks. 4.1.1 Many communities throughout the world are approaching, or have already reached, the limits of their available water supplies; water reuse has become necessary for conserving and extending available water supplies. Where the availability of water limits development, water reuse can facilitate social and economic developmental needs in an environmentally responsible manner. 4.1.2 Many communities are also approaching, or have already reached, the limit of available water treatment facilities. New facilities and infrastructure are costly. In-situ water reuse reduces load on community wastewater facilities. 4.1.3 Additionally, many communities face increased security issues in safeguarding water sources and treatment. In-situ systems provide for redundancies and diversified systems that decrease security issues associated with centralized facilities. 4.2 Sustainable Development—This practice is consistent with the general principles for sustainability relative to building as identified in Guide E2432. It addresses the environmental, economic, and social principles as follows: 4.2.1 Environmental—Water is a natural resource. Sustainable use of natural resources requires that the resource is utilized efficiently and in a manner that preserves or enhances the quality of that resource and does not adversely alter the balance between the renewable resource and the rate of consumption for building-related purposes. Utilization of technologies, such as in-situ water reclamation systems that help conserve water enable more sustainable use of water than standard construction. 4.2.2... SCOPE 1.1 In an effort to help meet growing demands being placed on available water supplies and water treatment facilities, many communities throughout the United States and the world are turning to water reclamation and reuse. Water reclamation and reuse offer an effective means of conserving the Earth’s limited high-quality freshwater supplies while helping to meet the ever growing demands for water in residential, commercial, and institutional development. This practice sets forth a practice for water reuse in buildings and related construction, encompassing both graywater and blackwater in-situ reclamation. 1.1.1 This practice specifies parameters for substituting reclaimed water in place of potable water supplies where potable water quality is not required. 1.1.2 This practice specifies limitations for use of reclaimed water in-situ. It is not intended for application to the use of reclaimed water delivered from an offsite municipal wastewater treatment facility. 1.1.3 This practice specifies performance requirements for in-situ reclaimed water systems. It does not specify particular technology(ies) that must be used. A variety of technologies may satisfy the performance requirements. 1.1.4 This practice specifies requirements for water stewardship associated with in-situ water reuse. Consistent with Guide E2432 and for purposes of this practice, water stewardship includes both quantity and quality impacts on water used in buildings. 1.2 Implementation of this practice will require professional judgment. Such judgment should be informed by experience with sustainable development, including environmental, economic, and social issues as appropriate to the building use, type, scale, and location. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered stan...
Abstract
Overview
ASTM E2635-22: Standard Practice for Water Conservation in Buildings Through In-Situ Water Reclamation provides a comprehensive framework for the sustainable management of water resources within buildings. Developed by ASTM Committee E60 on Sustainability, this standard outlines performance-based requirements for reclaiming and reusing water, including both graywater and blackwater, directly at the site of water use. The practice supports the efficient use of water, reduces the strain on potable water supplies and wastewater treatment infrastructure, and advances sustainable building operations worldwide.
Key Topics
- In-Situ Water Reclamation: Focuses on on-site collection, treatment, and reuse of water within building premises, utilizing graywater from baths, showers, and sinks, as well as blackwater from toilets and kitchens.
- Water Conservation: Encourages substituting reclaimed water for nonpotable applications, thus reducing the demand for high-quality freshwater.
- Performance Criteria: Specifies the treatment levels, monitoring methods, setback distances from water supplies, and system reliability requirements.
- System Design and Operation: Emphasizes reliability, redundancy, and adaptability to varying operational conditions such as peak hydraulic load, equipment maintenance, or power failure.
- Health and Safety: Addresses cross-connection prevention, system marking, and ongoing maintenance to ensure public safety and system effectiveness.
- Water Stewardship: Promotes responsible water use by balancing both water quantity and quality considerations, minimizing environmental impact, and supporting sustainability goals.
Applications
ASTM E2635-22 is designed for use in a wide range of building types and supports a variety of applications, including:
- Urban and Commercial Buildings: Implementing in-situ water reuse systems for landscape irrigation, toilet flushing, fire protection, and cooling towers.
- Institutional Facilities: Schools, hospitals, and government buildings benefit from reduced potable water consumption and wastewater generation.
- Multifamily Residential: Enables significant water savings in high-density housing by allowing for safe graywater reuse for flushing and irrigation.
- Industrial Facilities: Supports water recycling for non-process uses, such as cooling, subject to treatment and monitoring requirements.
- Sustainable Development Projects: Essential for green building certifications, reducing operational costs, and demonstrating commitment to environmental stewardship.
By following this standard, building owners and designers can decrease dependency on municipal water supplies, extend the service life of local water resources, and reduce the burden on centralized water treatment infrastructure.
Related Standards
ASTM E2635-22 references multiple other standards and guidance documents to ensure comprehensive water reuse practices:
- ASTM D888: Methods for testing dissolved oxygen in water.
- ASTM D1253: Test methods for residual chlorine in water.
- ASTM D4188, D5464, D5907, D6698: Various testing and monitoring methods for water quality parameters such as pH, turbidity, and suspended solids.
- ASTM E2432: Guide for General Principles of Sustainability Relative to Buildings.
- ASTM E631 and E2114: Terminology for building constructions and sustainability performance.
- EPA and Public Health Guidance: Includes US EPA water quality protocols and state-level regulations such as California's "Purple Book," addressing treatment criteria for recycled water.
Practical Value
Adopting ASTM E2635-22 equips building professionals with a performance-based path for integrating water reclamation and conservation into project designs and ongoing operations. The standard not only reduces operating costs and dependence on finite potable water supplies but also demonstrates environmental and social responsibility-key considerations in modern sustainable building practices. By aligning with ASTM E2635-22, stakeholders contribute to resilient urban infrastructure, facilitate economic development, and safeguard public health through smart water stewardship.
Keywords: water reclamation, in-situ water reuse, water conservation, building sustainability, nonpotable water, graywater reuse, sustainable building standards, ASTM E2635
Технические детали
- Технический комитет
- E60 - Sustainability
- SKU
- ASTM E2635-22
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