Nutrient Source Identification Services

ERD has conducted multiple studies to identify the sources of nutrient loadings in watersheds contributing to lakes, creeks, or estuaries. These studies have used tracers such as chloride, conductivity, coprostanol, and stable isotope analyses of nitrogen and oxygen to partition measured nutrients into the originating sources (such as stormwater runoff, reuse water, or fertilizer). ERD has conducted multiple studies to identify impacts from reclaimed wastewater used for irrigation.