Standards Development

Scope

This document applies to the recycling and utilization of water from permeable pavement in urban
squares, roads or highways, and is especially suitable for water-scarce areas.
This document covers the comprehensive management of water from permeable pavements, including
its infiltration, collection, storage and regulation, treatment, monitoring, utilization, and the effectiveness
evaluation.
This document introduces:
- Terms and definitions;
- Investigation and analysis;
- The entire process of the reuse of water from permeable pavement, consisting of infiltration,
collection, storage and regulation, treatment, monitoring, utilization, and the effectiveness evaluation.

Purpose

1. Purpose
This document establishes a technical specification to guide the construction, management, and
evaluation of water reuse systems of water from permeable pavement based on the fundamental
requirements of such reuse.
2. Reasons
1) Global Application of Permeable Pavements
Since the mid-20th century, many countries have been researching and promoting permeable
pavement technologies. The United States, Germany, France, Japan, and China have implemented
permeable pavements in their transportation infrastructure. The United States promotes the use of
permeable pavements in urban construction. Germany focuses on transforming impervious pavements.
France conducts comprehensive systematic research and widespread the application of permeable
pavements. Japan implements the "Rainwater Infiltration Plan". In the 21st century, China has been
vigorously promoting the construction of Sponge Cities, in which the construction of permeable
pavement and the reuse of water from permeable pavement are a significant component.
2) Reliable Reclaimed Water Resource
The global water crisis is increasingly severe. Reclaimed water, as a key supplementary water source,
is crucial in alleviating this crisis. Due to road dust, tire wear, vehicle exhaust emissions, fuel leaks,
road coatings and other factors, initial water from permeable pavement contains more pollutants such
as particulate matter, heavy metals, oil and organic substances. Permeable pavements, commonly
composed of porous materials, can remove or filter these pollutants to some extent through pore
interception and physical adsorption. Consequently, water from permeable pavement can be used as
reclaimed water, particularly in water-scarce countries and regions, for purposes such as toilet flushing,
vehicle washing, urban landscaping, road cleaning, firefighting and construction.
3) Lack of International Standard
Currently, international standards for permeable pavement focus on structure, materials, construction,
and operation and maintenance, such as ISO 17785. Additionally, there are several standards related
to reclaimed water, such as ISO 21939, ISO 22524, ISO 23043, ISO 23044, and ISO 22449, which
mainly address industrial wastewater reuse; and ISO 20760, ISO 20761, ISO 23056, and ISO 23070, which are mainly concerned with the design and management of urban water reuse systems. However, there is a lack of international standards specifically for the reuse of water from permeable pavement, including aspects such as water infiltration, collection, storage and regulation, treatment, monitoring, utilization and the effectiveness evaluation.

In conclusion, with the global water crisis intensifying, permeable pavement plays a critical role in lowimpact development and is increasingly applied worldwide. Water from permeable pavement is a
reliable reclaimed water resource that can provide substantial benefits, especially for water-scarce
regions. The absence of international standards for the reuse of water from permeable pavement. This
necessitates the urgent development of related technical specifications or standards to enhance and
regulate the reuse of water from permeable pavements.
This document applies to the recycling and utilization of water from permeable pavement in urban
squares, roads or highways etc. It provides a technical guideline for the reuse of water from permeable
pavement, especially in regions facing water scarcity, to promote water resource recycling and
conservation. The document for water reuse falls under the scope of ISO/TC 282.