Does washing a car with river water cause damage to the car?

[DelLucia]

Washing a car with river water can cause damage. Firstly, river water inevitably contains solid substances such as sand and mud, which can easily clog the car's internal components. Secondly, during the washing process, oil and dirt may flow out, polluting the river water. Therefore, cars are generally washed at auto beauty shops. Steps for washing a car at a beauty shop: 1. Use a water gun to rinse the car body, following the sequence from the roof to the body and then to the undercarriage; 2. Evenly cover the car's paint surface with foam; 3. Use a sponge to wipe the upper and lower parts of the car; 4. Rinse off the foam from the car body with a water gun, and use a specialized squeegee to remove water droplets from the car body; 5. Clean the interior of the car.