Calculadora de Índice de Calidad del Agua Gratis
Calcula el WQI a partir de parámetros físicos, químicos y biológicos de una muestra de agua.
Water Quality Index
74.3 WQI
Water Quality Index vs Dissolved Oxygen Score
Fórmula
## How to Calculate Water Quality Index The WQI combines multiple water quality parameters into a single score. ### Formula **WQI = DO(0.30) + pH(0.15) + Turbidity(0.20) + Temp(0.15) + Nutrients(0.20)** ### Rating Scale - **90-100**: Excellent - **70-89**: Good - **50-69**: Medium - **25-49**: Bad - **0-24**: Very Bad Each parameter is first converted to a 0-100 sub-index score based on its measured value.
Ejemplo Resuelto
A water body with DO=75, pH=80, Turbidity=70, Temperature=85, Nutrients=65.
- 01DO: 75 * 0.30 = 22.5
- 02pH: 80 * 0.15 = 12.0
- 03Turbidity: 70 * 0.20 = 14.0
- 04Temperature: 85 * 0.15 = 12.75
- 05Nutrients: 65 * 0.20 = 13.0
- 06WQI = 22.5 + 12.0 + 14.0 + 12.75 + 13.0 = 74.3 (Good)
Preguntas Frecuentes
What does the WQI measure?
The Water Quality Index consolidates multiple measurements into a single number indicating overall water quality. Higher scores indicate better quality for aquatic life and human use.
Why is dissolved oxygen weighted most heavily?
Dissolved oxygen is the most critical parameter for aquatic life. Most fish need DO above 5 mg/L. Low DO indicates pollution and eutrophication.
What causes low water quality?
Common causes include nutrient runoff (fertilizers), sewage discharge, industrial pollution, sediment erosion, thermal pollution, and acid rain.