Lightly pollutedOfficial DLH data
Dekat PT. Sampit
Sungai Mentaya · Kec. Mentawa Baru Ketapang
Pollution Index
3.24
Latest data: 2025 · S2
Status scale
01510+
Parameters tested
- pH4.7Std 6–9Acidity of the water. Central Kalimantan peat rivers are naturally acidic (pH 4–6).ⓘ Peat rivers are naturally acidic (pH 4–6). pH below the standard here is usually not a pollution signal.
- BOD (mg/L)14Std 3Biochemical Oxygen Demand — oxygen bacteria use breaking down organic matter. High = heavy organic waste load.
- COD (mg/L)95Std 25Chemical Oxygen Demand — oxygen needed to break down pollutants. High = industrial or wastewater contamination.
- TSS (mg/L)12Std 50Total suspended solids. High = turbid water, usually from sediment, mining, or spills.
- DO (mg/L)3Std min 4Dissolved oxygen. Higher is healthier for fish. Low = oxygen-starved water.
- Fecal coliform (MPN/100mL)40Std 1000Fecal bacteria. High = human/animal waste contamination — diarrhea risk if swallowed.
- Nitrate (mg/L)1Std 10Nitrate (NO₃-N). Often from fertilizer runoff or domestic waste.
- Total phosphate (mg/L)0.1Std 0.2Total phosphorus. High values trigger algal blooms (eutrophication).
- TDS (mg/L)69Std 1000Total dissolved solids — salts & minerals. High = brackish or wastewater-contaminated.
- Water temp (°C)28.4Surface water temperature. Affects oxygen solubility.
- Flow (m³/s)234Volume per second. Context for scaling pollutant load.
Monitoring history
| Period | PI | Status |
|---|---|---|
| 2025 · S2 | 3.24 | Lightly polluted |
| 2025 · S1 | 1.18 | Lightly polluted |
| 2024 · S2 | 1.17 | Lightly polluted |
| 2024 · S1 | 2.76 | Lightly polluted |
| 2023 · S2 | 1.81 | Lightly polluted |
| 2023 · S1 | 1.9 | Lightly polluted |