Abstract: A wastewater diagnostic system provides a housing that holds equipment to perform contaminant diagnostics in bilge water including shipboard bilge water. The wastewater diagnostic system utilizes a plurality of receptacles to house glass containers and reagents. The wastewater diagnostic system of the preferred embodiment includes shock-absorbing materials in the compartments to prevent movement and securely house glass containers and reagents. The wastewater diagnostic system further utilizes a flat work surface portion providing a test bed to conduct tests in non-laboratory environments. The system also provides methods to conduct tests to determine contaminants while utilizing the system.