Trichloromethane Levels in Kunshan City Drinking Water (2016–2022)
Author Information
Author(s): Liang Xiaojun, Qian Guohua, Wang Yihan, Chen Mengyao, Liu Yang, Zhao Ping, Li Junling, Wang Yuan, Liu Yuyan, Motta Oriana
Primary Institution: Center for Disease Control and Prevention of Kunshan
Hypothesis
This study aimed to evaluate the annual pollution characteristics of trichloromethane (TCM) in Kunshan City’s tap water from 2016 to 2022.
Conclusion
The overall carcinogenic risk from multiple exposure pathways was slightly above the ideal level, while the non-carcinogenic risk was within an acceptable range.
Supporting Evidence
- The study found a 100% compliance rate with the TCM limit (0.06 mg/L).
- Median annual concentrations ranged from 0.1 to 6.4 μg/L.
- Significant inter-annual variations were observed with the lowest levels in 2019 and the highest in 2020.
- Quarterly analysis revealed significant seasonal differences, peaking in the third quarter.
- TCM concentrations showed significant correlations with annual and quarterly trends, turbidity, and chlorides.
Takeaway
The study found that trichloromethane levels in drinking water are mostly safe, but there are some health risks that need to be monitored.
Methodology
The study analyzed 566 tap water samples using non-parametric tests and Spearman’s correlation analysis.
Limitations
The study's findings may be influenced by variations in sampling periods and sample sizes across different years.
Participant Demographics
Households in Kunshan, China.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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