Targets 6.1

By 2030, achieve universal and equitable access to safe and affordable drinking water for all.

Targets 6.3

By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally.

Targets 6.4

By 2030, substantially increase water-use efficiency across all sectors and ensure sustainable withdrawals and supply of freshwater to address water scarcity and substantially reduce the number of people suffering from water scarcity.

Targets 6.6

By 2030, protect and restore water-related ecosystems, including mountains, forests, wetlands, rivers, aquifers and lakes.

The City improved water environment and conducted comprehensive inspections of regulated businesses

Enhance pollution detection with regulated businesses and sewer systems, regularly inspect the water quality of effluent water, and encourage industries to implement proper operation of sewage treatment facilities. In 2020, the City conducted a total of 2,381 audits, strictly regulating the water quality of effluent water to protect the water environment.

The City hosted the Tianmu Water Trail Festival

Preparation for the festival brings organizations and communities in the Tianmu area together, fosters a sense of community, constructs an ecological cultural circle in Tianmu, and develops into a model of community sustainable management. Schools in Tiamu also integrate the Caoshan Waterway system into various courses, encouraging students to cherish water resources and educating them on local issues and water conservation to cultivate better water education.

Proper sewage treatment strategies

The year 2020 was the start of the sixth phase of the City's branch network division project and user drainage equipment project (2020-2023). The proportion of the population connected to sewage treatment facilities reached 85.58%. The City strengthened inspections of manholes and worked on extending the lifespan of sewage pipelines with the aim to comprehensively increase sewage connection rate and extend the service life of sewage pipelines. Also, to resolve the issue of rainwater getting into the sewage pipelines, the City not only measured water levels to identify problems of rainwater in the sewage system or leakages but also utilized alley beautification projects to identify and fix these issues.

Water supply pipe network improvement strategies

In light of the increasing scarcity of water resources, the City has established the 20-year “water supply pipe network improvement and management plan” long-term strategy (2006-2025) to utilize water sources effectively, prevent leakage, and reduce the water leakage rate. The plan is divided into four stages, and the City is currently in the 4th stage (2020-2025), which involves the continued replacement of old pipes and water pressure management, as well as measures such as comprehensive regional water quantity measurement and regional leak inspections to control and improve water leakage issues.

Also, following the pipeline replacement, water pressure management, active detection of leakage and repair rate quality recommended by the International Water Association (IWA) regarding the amount of water lost in the network, the City worked to improve the water supply network with a multipronged approach, gradually reducing the leakage rate. Between 2006 and 2020, the City replaced 2,286 kilometers of old water pipelines, achieving an average annual replacement rate of 2.45%, exceeding the recommended 1.5% by the International Water Association (IWA) every year. The water leakage rate also decreased from 26.99% at the end of 2005 to 11.90% in 2020, saving 182,790,000 tons of water, which is roughly equivalent to 54% of Feitsui Reservoir's 335,505,000 tons of effective water storage capacity, effectively reducing leakage and improving water resource utilization.

Upgrade the quality of tap water supply

To improve the quality of the City's tap water supply, a total of 95 water quality monitoring stations are set up with 24-hour monitoring. A “multi-barrier” water purification management strategy is used, and the quality of water from water purification plants is regulated with an internal control standard 10 times stricter than what is required by the “Drinking Water Quality Standards”. Precise 24-hour online water quality monitoring ensures 100% compliance with the “Drinking Water Quality Standards”. In 2020, the average turbidity of the tap water supply was 0.02 NTU, far below the regulatory limit (2 NTU). The water turbidity falls under 0.1 NTU 99.6% of the time, surpassing the 95% target for developed countries.

Water quality monitoring is conducted on the water source, raw water, and clean water of purification plants. In 2020, 569 samples of raw water were taken for 8,721 tests while 268 samples of clean water were taken for 4,462 tests. Meanwhile, representative points are set up throughout the water supply network based on population distribution. These points are sampled and tested monthly, with a total of 6,730 samples taken for 42,018 tests in 2020. The City conducts 139 water quality tests, far exceeding the legally mandated 68 tests. Throughout the years, inspection results have all met the Drinking Water Quality Standards. Relevant water quality inspection results are published online to provide transparent water quality information.