When Is Heavy Metals Testing Required?
| States | Fertilizer | Soil Amendments |
How long are test results valid for application submission? |
Links |
|---|---|---|---|---|
| Washington | All New Fertilizer applications | N/A | 1 year | Metal Analysis requirement |
| Oregon | All new product registrations: Fertilizer, agricultural amendment, agricultural mineral and lime products sold or distributed in the state and required to be registered with the Department shall be limited in the level of the metals arsenic (As), cadmium (Cd), mercury (Hg), lead (Pb), and nickel (Ni) | 18 months |
|
|
| California | Commercial Fertilizer and agricultural mineral products: Packaged product labels for commercial fertilizer and agricultural mineral products, with guarantees of available phosphoric acid, iron, manganese, or zinc, which are derived from inorganic sources, shall include either an informational statement of laboratory test results or provide an informational statement providing the maximum levels in parts per million of arsenic, cadmium, cobalt, copper, lead, mercury, molybdenum, nickel and selenium | N/A | 5 years | CDFA Fertilizer law and regulations |
| California CDFA OIM | ANY Products guaranteeing iron, manganese, zinc, or phosphates derived from inorganic sources need the heavy metals statement. | N/A | 5 years | CDFA OIM Licensing, Registration, & Labeling Guide |
| OMRI | Heavy Metal Labs showing levels of Arsenic (As), Cadmium (Cd), and Lead (Pb) for ANY product that contains compost, manure, vermicompost, mulch, mined minerals, soil, or ash COR only: Trace Metal Labs showing Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb) and Mercury (Hg) for any product that contains microbes or the products of microbial processes anaerobic digestate, compost, fulvic acid, ash, humates, or struvite |
1 year | Omri testing requirements | |
