As technology advances and living standards gradually improve, people’s awareness of environmental protection has also grown. Water quality has long remained a focal public concern. Although China faces severe water scarcity, its status as a large country with a massive population and extensive agriculture generates enormous water demand. Therefore, our top priority is to stop water pollution from growing worse. Water pollution severely disrupts the survival of aquatic organisms and inflicts cascading harm on surrounding flora, fauna, soil and water sources alike. It is thus critical for us to halt the worsening of water pollution.

Nevertheless, environmental protection awareness remains insufficient across society. Unregulated discharge of untreated industrial wastewater and domestic sewage by some parties has triggered severe environmental contamination. To fully safeguard water safety, regulatory authorities have mandated stricter environmental monitoring. Water quality detectors serve as effective tools for regulators to supervise enterprises, preventing further deterioration of water pollution.

What Hazardous Substances Are Covered in Water Quality Testing?

The types of harmful substances contained in wastewater vary by industry and disinfection methods. Targeted testing and treatment solutions should be adopted accordingly.

Hangzhou Modi is a manufacturer specializing in independent R&D of online water quality monitors. Its products apply to a wide range of scenarios requiring water quality analysis, including large, medium and small water plants, rural water supply systems, environmental pollution source monitoring sites, industrial aquaculture facilities, swimming pool water operation management, industrial recycled water reuse, circulating cooling water systems and more. The devices display real-time water quality data to judge whether water meets national discharge standards.

A set of universal indicators including COD, ammonia nitrogen, total phosphorus, total nitrogen and chromatic are required for water testing across nearly all industries.

Additional specialized indicators are tested based on specific industrial scenarios: biological toxicity is a key testing parameter for domestic water; coliform bacteria testing is mandatory for hospital wastewater. Moreover, water disinfection methods introduce unique monitoring parameters that cannot be overlooked. For example, water disinfected via chlorine dosing requires continuous monitoring of total residual chlorine to avoid excessive chlorine levels in water.