# South Korea Korea: Water supply / Volume Index (BOK ECOS)

South Korea Korea: Water supply / Volume Index (BOK ECOS) was up 0.3% year on year in September 2026, compared with 0.6% in August 2026.
The level stood at 107.4 2020=100.
Over the past ten years it has ranged from −3.8% (Feb 2017) to 5.4% (Feb 2018), averaging 0.7%.

- Source agency: Bank of Korea
- Makrognosis code: `KR.SVCOUT.M.NSA.ITEM-I51AAC-2`
- Frequency: monthly
- Units: 2020=100
- Coverage: 2016-01-01 to 2026-09-01 (129 observations)
- Page: https://makrognosis.robomacro.com/data/south-korea/korea-water-supply-volume-index-bok-ecos

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 107.4 2020=100 | 0.3 |
| August 2026 | 111.3 2020=100 | 0.6 |
| July 2026 | 110.3 2020=100 | −0.5 |
| June 2026 | 103.5 2020=100 | 0.0 |
| May 2026 | 104.0 2020=100 | 0.8 |
| April 2026 | 99.00 2020=100 | 0.1 |
| March 2026 | 101.8 2020=100 | 0.0 |
| February 2026 | 94.80 2020=100 | 0.0 |
| January 2026 | 103.6 2020=100 | 1.2 |
| December 2025 | 102.9 2020=100 | 0.5 |
| November 2025 | 101.5 2020=100 | −0.10 |
| October 2025 | 105.4 2020=100 | −0.5 |
| September 2025 | 107.1 2020=100 | −0.5 |
| August 2025 | 110.6 2020=100 | −0.5 |
| July 2025 | 110.9 2020=100 | 1.9 |
| June 2025 | 103.5 2020=100 | 0.0 |
| May 2025 | 103.2 2020=100 | −0.2 |
| April 2025 | 98.90 2020=100 | 0.3 |
| March 2025 | 101.8 2020=100 | 1.5 |
| February 2025 | 94.80 2020=100 | −0.1 |
| January 2025 | 102.4 2020=100 | 0.6 |
| December 2024 | 102.4 2020=100 | 0.10 |
| November 2024 | 101.6 2020=100 | 1.5 |
| October 2024 | 105.9 2020=100 | 1.9 |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/KR.SVCOUT.M.NSA.ITEM-I51AAC-2"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/KR.SVCOUT.M.NSA.ITEM-I51AAC-2",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```