On this basis, you can find a higher-level product quality inspection office or health supervision office in the provincial capital city. The higher the city level, the more authoritative it is.
The environmental protection department's detection of this is also relatively reliable, but it is still lower than the above two departments in terms of authority.
If you want to test more accurately and quickly, you can go to some water conservancy universities for testing, and the research rooms of these universities are also more authoritative.
Environmental testing (EIA) is to monitor, monitor and determine various environmental elements (environmental pollutants) representing environmental pollution and environmental quality by means of modern science and technology. As a professional environmental testing organization, Engel can provide environmental testing services including water quality testing, air testing, soil testing, solid waste testing, biological testing, noise and vibration testing, electromagnetic radiation testing, radioactivity testing, thermal testing, light testing and health (pathogens, viruses, parasites, etc.) testing. ) according to various standards for testing, and issue a test report.
Reference materials? Water quality detection of Baidu encyclopedia entry