This chart is from the USDA Economic Research Service. It shows that US farmers consider the environmental effects of agricultural production, e.g., soil erosion and the loss of sediment, nutrients, and pesticides to water, and have adopted conservation practices to mitigate these effects. Use of such practices has increased substantially over the past 20 years. Farmers will continue to adopt conservation practices when it's affordable. Luckily, government programs promote adoption rates by helping defray costs. There is reason to hope.