In order to ensure the safety of drinking water on outlying islands and understand the current quality of drinking water in Ludao Township and Lanyu Township in Taitung County, three drinking water quality sampling and analysis operations were carried out during the contract period, and the test results over the years were compiled and analyzed. For regions and water quality projects that meet drinking water source water quality standards and drinking water quality standards, we will explore the causes and improve countermeasures, and develop drinking water safety management. : 1. Sampling and testing of tap water source water quality This year's monitoring locations include Green Island Water Purification Plant, Lanyu East Purification Water Plant, Lanyu Hongtou Water Purification Plant, and Lanyu Langdao Water Purification Plant. Three water quality sampling inspections should be completed this year. This plan will complete three water quality sampling inspection operations in April, June and September 2023, and the results all meet the drinking water source water quality standards. 2. Sampling and testing of reservoir water quality This year's monitoring location is the Green Island Houqin Reservoir, and three water quality sampling inspections should be completed this year. This plan will complete three water quality sampling inspection operations in April, June and September 2023, and the results all meet the drinking water source water quality standards. 3. Sampling and testing of tap water quality The monitoring locations for this year are Green Island Water Purification Plant, No. 79 Gongguan Village, Ludao Township, Beside the Zhongliao Bridge in Zhongliao Village, Ludao Township (Fude Tuigong Temple), and Green Island Village Representatives at No. 194, Nanliao Village, Ludao Township There are 7 water purification sites in total, including the Hui (Old Hall), Lanyu Township East Purification Water Plant, Lanyu Township Hongtou Water Purification Plant, and Lanyu Township Langdao Water Purification Plant. Three water quality sampling inspections should be completed this year. This plan will complete three water quality sampling inspection operations in April, June and September 2023. Among them, in addition to the results of the first water quality sampling test, the ammonia nitrogen at the Green Island Township measuring point and the coliform group in Green Island Water Purification Station and Green Island (mansion) exceeded the standard, the results of the subsequent two water quality tests were all in line with drinking water quality. standard. In addition, the aforementioned water quality exceeding the standard was re-tested on June 16 in conjunction with the Taiwan Water Company, and the re-test results were all in compliance with the "Drinking Water Quality Standards". 4. Sampling and testing of non-tap water quality This year's monitoring will be carried out at two places, including Lanyu's Coconut Oil Elementary School and Lanyu Coconut Oil Community. Three water quality sampling inspection operations should be completed this year; this plan will complete three water quality sampling inspections in April, June and September of 2023 respectively. During the water quality sampling inspection operation, the test results showed that except for the bacterial standards (E. coli group, total bacterial colony count) exceeding the standards, the other test items were in compliance with the drinking water quality standards. The results of the third water quality sampling test in September 2023 found that the coliform group and total bacterial count were much lower than the previous two times. It is estimated that mountain spring water, one of the non-tap water sources, may be susceptible to surrounding pollutants. The impact is related to the lack of disinfection treatment of water. Therefore, in the future, publicity should be strengthened to maintain environmental sanitation near water intakes to avoid pollution from human activities, and implement the concept that non-tap water should be boiled or disinfected before drinking. In terms of water quality testing for non-tap water users in Ludao Township and Lanyu Township, this plan is to accurately grasp the water quality status of groundwater or mountain spring water in Ludao Township and Lanyu Township. It plans to select sites in a circular manner across the island to conduct water quality testing in Ludao Township. Ten households and 20 households in Lanyu Township have been selected as long-term monitoring points for non-tap water users, and consent has been obtained from households or businesses through on-site surveys or telephone interviews. According to this year’s test results, the pass rate of the first water quality test in Ludao Township was about 70% (7 companies passed) and the pass rate of total bacterial colonies was about 10% (only 1 company passed). The second water quality test in Ludao Township The pass rate for coliform testing was about 30% (3 companies passed), and the pass rate for total bacterial colonies was about 40% (only 4 companies passed); the first water quality test in Lanyu Township for coliforms passed the rate of about 45% (9 companies passed ), the pass rate for the total bacterial colony count is about 10% (only 2 companies passed the test), the pass rate for the second water quality test for coliforms was about 30% (6 companies passed the test), and the pass rate for the total bacterial colony count was about 35% (7 companies passed the test). As for nitrate nitrogen, all measurement points meet drinking water quality standards. Regarding chloride salts, some monitoring points that use groundwater may have a tendency to become salinized due to long-term use of groundwater, so the chloride salt detection values are higher than the drinking water quality standards. 5. Handle publicity meetings, briefings and education training related to drinking water on outlying islands This project plans to hold a safe drinking water promotion meeting on offshore islands in June and September respectively at the Nanliao Village Office in Ludao Township, Taitung County and the Coconut Oil Elementary School in Lanyu Township, Taitung County. On May 20, May 27, June 11, June 15, June 18, June 27 and October 15, 2023, respectively, at the Taitung County Environmental Protection Bureau and Zhiben National A total of 7 briefing sessions were held to promote the offshore drinking water sharing platform in the Forest Recreation Area, Sustainable Ark Pavilion, Green Island Nanliao Fishing Port, Sugihara Bay, Nanliao Village Office and Taitung Forest Park Prairie.In addition, in order to improve the planning staff's skills in water quality sampling and testing, all project staff are required to participate in educational training on water quality sampling and testing technology or drinking water safety management technology that lasts for more than 4 hours per session. This project has been launched on August 16, 2023. The "Drinking Water Safety Management and Water Quality Sampling Technology Education and Training Implementation Plan" was submitted and completed on August 24, 2023. 6. Analysis of drinking water quality in outlying islands and improvement strategies The prerequisites for safe drinking water are good water sources, complete water purification treatment, sound water transmission and distribution systems and proper water equipment. Therefore, to drink safe drinking water, in addition to relying on tap water professionals to strictly monitor water purification treatment and supervisors In addition to promoting water quality inspection and control, agencies also need to effectively promote the public's full cooperation. This includes jointly maintaining drinking water sources, not arbitrarily pumping groundwater for drinking, preventing secondary pollution of tap water, and doing regular maintenance of drinking water equipment (water dispensers) to ensure drinking water safety.The tap water source of Ludao Township is mainly used by the No. 1 supplementary well, the No. 2 deep water well in the Ludao water purification plant and the Youqin Reservoir to supply drinking water for people's livelihood in Ludao Township. The tap water penetration rate is about 68.12%. The actual water supply volume of Lanyu Township’s water supply system is about 700 CMD to 1,300 CMD. The actual water supply population is about 1,998 people, and the tap water penetration rate is about 37.96%. Currently, only Coconut Oil Village does not have tap water available.According to the drinking water quality testing results over the years, Green Island's tap water has a tendency to have higher total trihalomethanes due to reservoir optimization and high total organic carbon in the raw water. However, the tap water source has been changed to one near the water purification plant. Deep well water, and the Houqin Reservoir has been changed to a backup water source, and the quality of its tap water supply has improved. From the testing data in the past three years and this year, it can be seen that there is no such phenomenon. In the past three years, the pass rate at each point has been nearly 100%, which shows that the quality of water supply in outlying islands is gradually becoming stable. The main potential problem with Orchid Island’s drinking water is that the water quality of non-tap water and simple tap water sources in the Coconut Oil Community is not good, mainly due to unqualified coliform testing values. This is because the water purification system is exposed to open spaces and has no disinfection treatment. Unit, common problems with non-tap water and simple water systems. 7. On-site physical examination guidance for water tanks, water towers and drinking water facilities in public and private places on outlying islands This project invites Assistant Professor Huang Junren of National Kaohsiung Normal University from June 12 to 16, 2023, to conduct drinking water equipment maintenance (water tower or reservoir cleaning and maintenance, drinking water equipment maintenance, etc.) for 30 institutions or hotels On-site physical examination coaching operations include on-site inspections of reservoirs, water towers, and drinking fountains, focusing on current inspections such as cleaning and maintenance, equipment maintenance, and water quality testing. We will evaluate their current conditions and respond to their needs. Provide suggestions for improvement to assist hotel and B＆B operators in maintaining the safety of their drinking water, and follow up on their maintenance or improvements. 8. Water quality inspection of fixed equipment for continuous drinking water supply in Ludao Township This plan conducts water quality inspections for fixed equipment of continuous drinking water supply in Ludao Township. The inspection items are mainly coliforms. The sampling frequency is more than 4 times a year (inclusive), totaling 120 times. This project has completed 4 water quality tests for coliforms on fixed equipment for continuous drinking water supply on outlying islands in April, June, August and September of 2023, totaling 130 times. This year's inspection results show that all B&Bs meet drinking water quality standards and can be safely consumed by the public or tourists. 9. Design and produce promotional materials This plan has submitted the proposed product plan for promotional materials on August 31, 2023, and completed the submission of all promotional materials on November 6; in addition, in addition to the need to produce 1,000 copies of promotional materials according to the contract , this project promised to provide another project to provide a drinking water sharing platform for offshore islands in the meeting to define the scope of work of the manufacturer. 1,000 copies of promotional materials have also been purchased.

Ludao Township, Lanyu Township, tap water quality, drinking water quality