Pollution Control Department Corrects Water Quality Data Following Fish Deaths in Prachinburi

Key summary

The Pollution Control Department (PCD) has issued a correction regarding water quality test results for the fish mortality incident in Prachinburi province. After reviewing previous data, the PCD acknowledged errors in reporting ammonia and aluminum concentration levels. Corrected figures show ammonia levels between 0.22–0.48 mg/L and aluminum levels between 0.559–3.547 mg/L, while most heavy metals were below 0.01 mg/L. Dissolved oxygen (DO) levels ranged from 2.5–7.5 mg/L across 9 sampling points in the Prachinburi River and its tributaries collected between October 12, 2026, and October 16, 2027. The PCD apologized for the reporting error and plans to collect sediment samples from the river and tributaries once flood conditions normalize, focusing on areas near industrial plants, communities, and agricultural zones to assess pollutant accumulation.