Why are they bad for water quality?

Over applying pesticides and fertilizers, not only damages our gardens, but contaminates storm water when irrigation water carries these chemicals to the storm drains. Pesticides, intended to kill bugs that ruin our lawns and property, also damage the important ecosystems that live in creeks, rivers, lakes and the ocean. Additionally, pesticides can cause a health threat to humans who swim or play in waterbodies which receive storm water discharges. Fertilizers, used to help our gardens grow, add nutrients to water causing excessive plant and algae growth. Plants and algae are an important part of the aquatic ecosystem, but when too much growth occurs, the dead and/or dying plant material in the water can take the oxygen out of the water and suffocate all other life in the water.

What can we do to prevent or reduce storm water pollution?

There are many simple things we can do to prevent storm water pollution and help protect the water quality of our local waterbodies, although the number of pollutants might seem overwhelming. By incorporating simple, daily changes in our routine or activities, preventing storm water pollution will not seem like such a dramatic change to our lifestyle.

Avoid over-applying fertilizers and pesticides to your home garden. Follow the application instructions listed on the product packaging to be certain you are using the correct amount of chemicals.

Try using natural alternatives to fertilizers and pesticides called Integrated Pest Management. The Northwest Coalition for Alternatives to Pesticides has some great tips for home gardeners. Additionally, the City of Oceanside has a handy flier called “Gardening Tips to Prevent Storm Water Pollution” (328 KB) for gardeners interested in a brief reference guide.

Try not to over-water your lawn. Excess water will simply run off into the street and wash away pesticides and fertilizers before they have had a chance to be effective.

Rather than pour unwanted chemicals into the street or down the drain (which is illegal), take them to Waste Management (142 KB) on Saturday mornings for proper disposal.

Label and store pesticides and fertilizers in a covered area, protected from rain water exposure.

What do the laws say about pesticides and fertilizer use?

Fertilizers and pesticides are still legal, but they must be applied according to directions. If everyone voluntarily limited their use or began using natural alternatives, Municipal, State and Federal governments would not have to create strict laws regulating pesticide or fertilizer use.