However, they must continue to comply with pre-treatment, return prevention and other requirements. You may only use pre-processing objects that are authorised to be used in our field of activity. To find out if pre-treatment products are allowed to be used, consult the grease separators and treatment devices. There are no royalties and charges on industrial water. Your agreement sets out the modalities for the verification and examination of the landfill to ensure that it is complied with. Read more: Monitoring commercial waste Even if impurities in your commercial waste (for example. B organic matter that causes a high BSB) significantly increases their taxes on commercial waste, there may be opportunities to reduce these costs by reducing contamination.