So when it rains they are easily washed into the groundwater and runoff water.

所以当下雨的时候，它们很容易被冲到地下水以及径流水中。

As the runoff water passes, they retain excess nutrients and some pollutants.

随着径流水的流过，它们保留了多余的养分和一些污染物。

Because of the drought, there is less water runoff from cities into the ocean. As a result, the ocean water is cleaner. But pollution remains a problem in other areas, including popular beaches.

因为干旱，各个城市流入海洋的水更少，这样海洋水就更清洁。但在其他地区污染仍是个问题，包括受人欢迎的沙滩。

They're an option I wish more people would reach for, as runoff, water access, labor issues and monoculturing plague a lot of modern agriculture here in North America.

他们是我希望更多人能够选择的选择，因为径流、水资源获取、劳动力问题和单一栽培困扰着北美这里的许多现代农业。