Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants — Public Data APIs

Open APIs related to Waterworks and Water Purification Plants, within Environment & Weather › Water and Sewage, and Water Quality on the Public Data Portal. 25 REST APIs, sorted by most requested. Click a name to go to its application page on the Public Data Portal. Search & filter on the main explorer.

  1. K-water – Real-time water information water quality (hourly) inquiry service (GW)

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    777 requests

    This data is public data provided by K-water, and is a service that supports querying water quality items among real-time water information in 1-hour units. Through this, water supply operating agencies and local government officials can comprehensively evaluate the safety and reliability of tap water, and recognize the possibility of water quality deterioration and abnormalities early to prepare prompt response measures…

    RESTAuto-approvedNo restriction
  2. Korea Water Resources Corporation – Real-time Water Supply Information Flow Rate (Hourly) Inquiry Service (GW)

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    496 requests

    This data provides real-time flow rate information for water purification plants and supply processes managed by K-water on an hourly basis. ㅁ Provided points: Intake plants, water purification plants, booster stations ㅁ Provided items: Flow rate by facility [㎥ or ㎥/h], management number, tag SN, tag description, data item classification (M, A, D, F) * Management number, tag SN, tag description: Measured…

    RESTAuto-approvedNo restriction
  3. K-water – Real-time water supply information water level (hourly) inquiry service (GW)

    K-water · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    340 requests

    The real-time water supply information water level (hourly) inquiry service provided by K-water is data that allows users to check hourly water level information collected from major water supply facilities nationwide. This data can be used as basic data for safety inspection of water supply facilities, improvement of water supply systems, and monitoring of abnormal situations. In addition, research institutions, local governments…

    RESTAuto-approvedNo restriction
  4. K-water – Waterworks Statutory Water Quality Information Inquiry Service

    K-water · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-27
    263 requests

    본 데이터는 지방(지자체) 및 광역수도사업자가 생산, 관리하는 법정수질정보(월정수장)에 대한 수질 항목 정보를 조회할 수 있도록 지원합니다. 해당 자료는 먹는 물의 안전성을 보장하기 위해 법적으로 정해진 항목별 기준치와 관련 정보를 포함하며, 이용자는 각 수질 항목의 정의와 법정 기준을 확인할 수 있습니…

    RESTAuto-approvedNo restriction
  5. K-water – Real-Time Water Information Pressure (Time) Inquiry Service (GW)

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    223 requests

    As public data provided by K-water, this service supports querying the pressure item among real-time water information in 1-hour units. This data can be directly utilized in various practical fields such as diagnosing the possibility of leakage, detecting pipeline anomalies, establishing facility maintenance plans, and improving long-term operational efficiency. Through this…

    RESTAuto-approvedNo restriction
  6. Korea Water Resources Corporation – Water supply facility information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-27
    187 requests

    This data supports querying the current basic operational status of water supply facilities (water intake facilities, water purification facilities, booster facilities) managed by local (local government)/regional water supply operators. Through this, the distribution and operational status of facilities can be identified and maintenance plans can be established. In addition, this data is used for facility capacity calculation and supply stability evaluation…

    RESTAuto-approvedNo restriction
  7. Korea Water Resources Corporation – Paldang Intake Station Water Quality Information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    137 requests

    Raw water quality information for K-water intake stations. - Items: Odor substances (Geosmin, 2-MIB), turbidity, pH, alkalinity, electrical conductivity, temperature, biological monitoring - Provided location: Paldang Intake Station Before change: Intake station water quality information (http://opendata.kwater.or.kr/openapi-data/service/pubd/wr…

    RESTAuto-approvedNo restriction
  8. Busan Metropolitan City – Today's Water Quality Information Inquiry

    Busan Metropolitan City · Busan · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-28
    121 requests

    Opens tap water quality information and water quality statistics data for each water treatment plant in Busan. The opened data includes the status of domestic and industrial water production volume in Busan, today's water quality (industrial water), today's raw water quality, today's purified water quality, and today's detailed purified water information. Production volume provides Beomeosa, Deoksan, industrial, Myeongjang, Hwamyeong production volume and production volume total.…

    RESTAuto-approvedNo restriction
  9. K-water – Local water supply water quality information

    K-water · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    116 requests

    ㅁ Provides local water supply water quality information (daily, weekly, monthly) by local government managed by K-water. ㅁ Provided items: Daily, weekly, monthly water quality data * Daily: 6 items (taste, odor, color, pH, turbidity, residual chlorine) * Weekly: 7 items (general bacteria, total coliforms, E. coli/fecal coliforms, ammonia nitrogen, nitrate nitrogen, potassium permanganate consumption…

    RESTAuto-approvedNo restriction
  10. Korea Water Resources Corporation – Industrial and Domestic Water Quality Information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-22
    84 requests

    ㅁ Provides water quality information (daily, weekly, monthly) for tap water produced at K-water regional water purification plants - Before change: Regional water purification plant water quality (http://opendata.kwater.or.kr/openapi-data/service/pubd/waterways/wdr/dailwater/list) - After change: Industrial and domestic water quality…

    RESTAuto-approvedNo restriction
  11. Seoul Metropolitan Government – Drinking Water Joint Facility (Mineral Spring) Water Quality Test Results

    Seoul Metropolitan Government · Busan · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-07
    77 requests

    Pursuant to Article 4 (Water Quality Inspection) and Article 11 (Reporting of Inspection Results, etc.) of the [Guidelines for Management of Drinking Water Joint Facilities] [Enforced Sep 12, 2023] [Ministry of Environment Directive No. 1614, partially revised Sep 12, 2023], and [Table 1] "Drinking Water Quality Standards (Related to Article 2)" of the Rules on Drinking Water Quality Standards and Inspections, etc., the "Drinking water quality standards of drinking water joint facilities (mineral springs) by district and county in Busan Metropolitan City…

    RESTAuto-approvedNo restriction
  12. Busan Metropolitan Government – Waterworks - Water Supply Interruption Status

    부산광역시 · Busan · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-28
    65 requests

    부산광역시 상수도 단수현황 정보(단수개시일자, 단수종료일자, 단수사유 등)를 개방합니다단수란 계획적이거나 비계획적으로 수도물 공급이 일정시간 중단되는 상황을 의미합니다. 상수도 단수는 수도관 교체, 정수장 보수, 배수지 청소 등 정비, 공사목적의 계획단수와 상수도관 파손 노후관 누수, 지진, 홍수, 한파…

    RESTAuto-approvedNo restriction
  13. Korea Water Resources Corporation – Water Purification Plant Water Quality Inspection Information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-27
    64 requests

    This data is information on water quality inspections of purified water conducted at water purification plants managed by the Korea Water Resources Corporation. The target is tap water that has undergone water purification treatment, and results of regular inspections are provided so that the public can drink it with peace of mind. Through this, supply stability and hygiene status can be checked, and this data increases the transparency of water purification plant management and ensures safe water…

    RESTAuto-approvedNo restriction
  14. Busan Metropolitan City – Water Supply Construction Status

    Busan Metropolitan City · Busan · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-28
    58 requests

    Opens construction status implemented by the Busan Metropolitan City Waterworks Headquarters. Water supply construction refers to construction to install, repair, and expand water supply facilities for clean and stable water supply. The opened data includes construction name, ordering department (waterworks headquarters, business office, etc.), commencement date, completion date, construction overview, progress rate, contract amount, construction company, and site representative,…

    RESTAuto-approvedNo restriction
  15. K-water – Tap water raw water (regional) water quality test information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-27
    44 requests

    This data is raw water (regional and local water supply) water quality test information collected from 160 municipal water supply facilities nationwide managed by K-water. Test items include test month, water supplier, water intake plant name, measurement point name, measurement point address, water sampling point classification, water purification plant name, water source, water sampling date, microorganisms, inorganic substances, organic substances, and disinfectants.…

    RESTAuto-approvedNo restriction
  16. Korea Water Resources Corporation – Regional Water Purification Plant Sludge Information

    Korea Water Resources Corporation · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-21
    41 requests

    The regional water purification plant sludge information data provided by K-water is data organizing the generation status and treatment performance of sludge generated during the water purification process. Through this data, sludge treatment status can be inspected and referenced for policy establishment, and researchers can use it as data to analyze generation characteristics and treatment technology effects. The industry…

    RESTAuto-approvedNo restriction
  17. K-water – Water Supply Raw Water (Small-scale) Water Quality Inspection Information

    K-water · Nationwide · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-27
    39 requests

    This data is water quality inspection information of raw water (village and dedicated water supply small-scale water supply facilities) collected from water supply facilities in 160 local governments nationwide. The targets are regional small-scale water intake sources, and the results of regular inspections conducted to secure drinking water safety are disclosed. This material is used to establish policies to supplement the vulnerabilities of small-scale facility management and secure safe drinking water…

    RESTAuto-approvedNo restriction
  18. Gyeryong, Chungcheongnam-do – Tap Water Faucet and Priority Management Area (Bi-weekly 1st) Water Quality Test Results API

    Gyeryong City · Chungnam Gyeryong-si · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-11-24
    34 requests

    Provided as a public data service by Gyeryong City, Chungcheongnam-do, the 'Tap Water Faucet and Priority Management Area Water Quality Test Results API' provides real-time results of regularly conducted water quality tests to ensure the safety of tap water supplied to citizens. This API utilizes input parameters to query Gyeryong City's tap water data collected as of September 1, 2021,…

    RESTAuto-approvedNo restriction
  19. Gyeryong-si, Chungcheongnam-do – Village Water Supply and Small-scale Water Supply Facility (All Items) Water Quality Test Results API

    Gyeryong-si · Chungnam Gyeryong-si · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-11-24
    32 requests

    The 'Village Water Supply and Small-scale Water Supply Facility Water Quality Test Results API' data of Gyeryong-si, Chungcheongnam-do is a public data service that provides real-time water quality test results of village water supplies and small-scale water supply facilities that supply water to residents in areas where general water supply is not provided. This API utilizes input parameters to collect data as of September 1, 2021.…

    RESTAuto-approvedNo restriction
  20. Gyeryong-si, Chungcheongnam-do – Water Supply Pipe Priority Management Area (2nd Time per 2 Months) Water Quality Test Results API

    Gyeryong-si · Chungnam Gyeryong-si · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-11-24
    32 requests

    The 'Water Supply Pipe Priority Management Area Water Quality Test Results API' data of Gyeryong-si, Chungcheongnam-do is a public data service that provides real-time water quality test results conducted regularly (2nd time out of 2 times a month) to intensively secure the quality safety of tap water supplied through water supply pipes. This API utilizes input parameters to provide daily…

    RESTAuto-approvedNo restriction
  21. Jeju Special Self-Governing Province – Water Supply Remote Integrated Meter Reading Data

    Jeju Special Self-Governing Province · Jeju · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2025-08-08
    29 requests

    Provides water consumption data measured by remotely reading water meters installed at customer accounts in each administrative neighborhood under the jurisdiction of Jeju Special Self-Governing Province.

    RESTReview requiredNo restriction
  22. Daegu Metropolitan City – Water Quality Information Inquiry Service_GW

    Daegu Metropolitan City · Daegu · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2026-05-13
    29 requests

    A service for inquiring water quality information (water quality statistics) of the Daegu Metropolitan City Waterworks Headquarters. The water quality information inquiry service API is a public data API provided by the Daegu Metropolitan City Waterworks Headquarters, allowing users to enter a year and query monthly water quality measurement information from January to December of that year. Provided…

    RESTAuto-approvedAttribution required
  23. Sejong Special Self-Governing City – Water Supply Infrastructure Status Inquiry Service

    Sejong Special Self-Governing City · Sejong · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2022-02-14
    24 requests

    Provides information on Sejong Special Self-Governing City water supply infrastructure names, locations, installation years, daily pressurization capacities, and facility operation reference information.

    RESTReview requiredNo restriction
  24. Daegu Metropolitan Government – Facility Information Inquiry Service

    Daegu Metropolitan Government · Daegu · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2026-05-13
    19 requests

    A service to look up facility information (general construction) from the Daegu Metropolitan City Waterworks Headquarters. The facility information inquiry API is a public data API provided by the Daegu Metropolitan City Waterworks Headquarters. By entering the construction classification, responsible department code, start date, and completion date, you can view detailed information related to waterworks construction carried out during the corresponding period.…

    RESTAuto-approvedAttribution required
  25. Daegu Metropolitan City – Flow Rate Information Inquiry Service_GW

    Daegu Metropolitan City · Daegu · Environment & Weather › Water and Sewage, and Water Quality › Waterworks and Water Purification Plants · Updated 2026-05-13
    17 requests

    A service to query flow rate information (annual revenue water ratio performance information, water purification plant operation annual report information) of the Daegu Metropolitan City Waterworks Headquarters, allowing users to query flow rate information. Daegu Metropolitan City collects and discloses various flow rate information to systematically carry out waterworks operation and water resource management. This flow rate information is used for tap water…

    RESTAuto-approvedAttribution required
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