ISO (International Organization for Standards) standards provide manufacturing, testing, and administrative guidelines that are standardized and repeatable. Standards may also involve different safety aspects. ISO standards are developed by international committees, with representation from different countries from government, the private sector, and universities. A manufacturer may chose to follow an ISO standard to help market their product. They may be required to comply with a standard because their client or a regulatory body requires it. You can't "violate" an ISO standard unless you claim you are adhering to it and you don't. What can happen is that a regulatory body, a government agency, or a private company may require a supplier to manufacture, test, or document an item or process to one or more specific ISO standards (or any other standards body, such as the SAE, IEC, or ANSI). If the manufacturer, contractor, consultant, or whoever fails to follow the contract requirements, there may be legal ramifications. If a company is required by contract to follow ISO Standard X123-1994 for the test and certification of their widgets and they do not, they may be sued for being in breach of contract, charged with safety violations, or whatever else may be appropriate to the specific circumstances. If you know of someone or some organization that claims to be following an industry standard and is not doing so, they are committing a violation of ethics at the very least. If it is a safety issue, for example with a parts manufacturer in the automotive industry, the violator should be reported to the vehicle safety regulatory body where you live. If it involves aircraft parts, the aviation authority should be informed. There is no one specific body to report such problems to, because a standard in of itself is not a regulation backed by an enforcement agency.