When farmers spray their crops with pesticide or fertiliser, it doesn't just vanish. It lands on the soil. Most farms have drainage systems so that their plants don't get root rot from waterlogged soil. Most of these drains eventually run into creeks, rivers and then the sea. These chemicals then end up in water supplies that we drink. It can also mean that 'organic' food is actually not because it has been irrigated with water containing chemical runoff.
Eutrophication
it is polluting our lakes and rivers
nonpoint source pollution
Runoff of fertilizer can cause water pollution in nearby bodies of water, leading to algae blooms and fish kills. Excess nutrients from the fertilizer can also disrupt the balance of ecosystems and harm aquatic organisms. Additionally, runoff can contribute to the contamination of drinking water sources, posing a risk to human health.
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Pond, because the water is stagnant.
Most nitrogen in the Chesapeake Bay is the result of fertilizer use and agricultural runoff.
Fertilizer is a concern of farms and agriculture. Therefore, the Department of Agriculture would be concerned with this. The Environmental Protection Agency would be concerned with fertilizer runoff and possible toxicity or pollution due to certain fertilizers.
once the surface runoff has reached a water body if the fertilizer contains nitrogen or phosphorous it can lead to eutrophic conditions in the water that promote algae growth. the algae growth will also be effected by the amount of flushing in the water body, temperature and if the water is stagnant or has ripples/waves.
Overuse of fertilizer can lead to nutrient runoff into water sources, causing water pollution and algal blooms. This can harm aquatic ecosystems and disrupt the balance of the ecosystem. Additionally, excess fertilizer can contribute to soil acidification and decrease soil biodiversity.
Eutrophication that occurs because of the introduction of inorganic plant nutrients into a body of water through sewage and fertilizer runoff.
Most agricultural and lawn fertilizers cause algae to grow. Whether that is considered beneficial depends on whether algae is a desired product. Fertilizers can be intentionally applied to holding ponds to cause algae growth, while unintended fertilizer runoff can cause oxygen-depleting blooms that harm the environment.