What is the primary purpose of regulations on fertilizer use?

The primary purpose of regulations on fertilizer use focuses on preventing runoff. This is crucial because fertilizers contain nutrients that can be harmful to the environment when they enter waterways. Runoff can contribute to water pollution, leading to problems such as algal blooms, which deplete oxygen in the water and harm aquatic life. Regulations aim to limit the amount of fertilizer that contaminates water sources, ensuring that agricultural practices are sustainable and that the ecological balance is maintained. These laws and guidelines help protect water quality by promoting responsible fertilizer application techniques and timing, thereby preventing nutrient overload in nearby streams and rivers. This focus on controlling runoff aligns directly with environmental conservation goals and public health safety.