# South Korea Korea: Sewage, wastewater, human and animal waste treatment services / Seasonally Adjusted Index (BOK ECOS)

South Korea Korea: Sewage, wastewater, human and animal waste treatment services / Seasonally Adjusted Index (BOK ECOS) was down 11.4% year on year in September 2026, compared with −1.8% in August 2026.
The level stood at 89.30 2020=100.
That is the lowest reading since August 2021.
Over the past ten years it has ranged from −11.9% (Aug 2021) to 13.5% (May 2018), averaging −0.3%.

- Source agency: Bank of Korea
- Makrognosis code: `KR.SVCOUT.M.NSA.ITEM-I51AAA-3`
- Frequency: monthly
- Units: 2020=100
- Coverage: 2016-01-01 to 2026-09-01 (129 observations)
- Page: https://makrognosis.robomacro.com/data/south-korea/korea-sewage-wastewater-human-and-animal-waste-treatment-services-kr-svcout-m-nsa-item-i51aaa-3

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 89.30 2020=100 | −11.4 |
| August 2026 | 94.60 2020=100 | −1.8 |
| July 2026 | 96.50 2020=100 | 1.6 |
| June 2026 | 93.70 2020=100 | −3.6 |
| May 2026 | 94.80 2020=100 | −2.6 |
| April 2026 | 97.40 2020=100 | −0.7 |
| March 2026 | 97.00 2020=100 | 0.3 |
| February 2026 | 92.70 2020=100 | −4.0 |
| January 2026 | 95.30 2020=100 | −0.5 |
| December 2025 | 97.40 2020=100 | 1.2 |
| November 2025 | 96.30 2020=100 | −3.1 |
| October 2025 | 109.0 2020=100 | 10.9 |
| September 2025 | 100.8 2020=100 | 5.4 |
| August 2025 | 96.30 2020=100 | 1.2 |
| July 2025 | 95.00 2020=100 | −9.2 |
| June 2025 | 97.20 2020=100 | 4.6 |
| May 2025 | 97.30 2020=100 | −1.4 |
| April 2025 | 98.10 2020=100 | −1.1 |
| March 2025 | 96.70 2020=100 | −3.9 |
| February 2025 | 96.60 2020=100 | −11.3 |
| January 2025 | 95.80 2020=100 | −4.8 |
| December 2024 | 96.20 2020=100 | −5.9 |
| November 2024 | 99.40 2020=100 | 1.5 |
| October 2024 | 98.30 2020=100 | 3.8 |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/KR.SVCOUT.M.NSA.ITEM-I51AAA-3"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/KR.SVCOUT.M.NSA.ITEM-I51AAA-3",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```