The Invisible Threat in Our Water

Location

Thapar Institute, Patiala, Punjab

Introduction

The global proliferation of microplastics (MPs)—plastic particles smaller than 5 mm—has become a critical environmental and public health concern. Recent research across 42 countries highlights their ubiquitous presence in tap water, bottled water, and groundwater. These contaminants act as "Trojan horses," carrying heavy metals and persistent organic pollutants into the human body, potentially leading to severe health issues such as oxidative

stress, neurotoxicity, and even cancer.

Safeguarding Our Water from Microplastics

A Hidden Crisis:

While we often focus on visible plastic pollution in our oceans, a more insidious threat is flowing through our taps and sitting in our bottled water. Microplastics have been detected in drinking water worldwide, with average abundances of 62.38 particles per liter in tap water and 38.45 particles per liter in bottled water. In some regions, such as parts of Africa, inadequate waste management and open dumping allow vast quantities of plastic to degrade and enter vital freshwater systems.

Techniques For Solutions & Remediation

Electrocoagulation (EC) :

A highly effective method where electricity is used to clump microplastics into larger "flocs"

that can be easily filtered out. Studies show that a 30-minute treatment can remove up to 90% of microplastics from water.

Advanced Filtration : Drinking water treatment plants utilizing pulse clarifiers and membrane bioreactors have

shown high efficiency in removing these tiny particles before they reach consumers.

Emerging Technologies :

New solutions include the use of magnetic "nanocoils" to break down plastics and blockchain

technology to track the entire lifecycle of plastic products, ensuring better accountability and recycling.

Policy and Circulating :

Moving toward a circular economy— where 100% of plastics are reused or recycled—is the

ultimate long-term solution to prevent new plastics from entering the ecosystem.

What We Still Need to Learn

Standardized Methods :

There is currently no globally accepted standard for how to sample, identify, and report

microplastic concentrations, making it difficult to compare data across different countries.

Geographical Bias :

Most research is concentrated in Europe and Asia. There is an urgent need for more studies in Africa, South America, and Oceania to understand the full global scale of the problem. Long-Term Health Impact :

While we know microplastics are toxic, the exact long-term effects of chronic, low-level

exposure through drinking water on human health are still being determined.

Sub-10 µm Particles:

Most current detection limits are set at 10 µm, but particles smaller than this (nanoplastics) can

migrate from the intestines directly into the human circulatory system.

We must advocate for standardized global monitoring, invest in advanced water treatment infrastructure, and push for stricter plastic waste regulations. Protecting our water sources is not just an environmental goal; it is a fundamental necessity for human survival

Reference

• Nelisiwe Ngomane, Nombuso N. Themba, Linton F. Munyai, Sydney Moyo, Pule Mpopetsi, Collins Oduro, Naicheng Wu & Tatenda Dalu (07 Jan 2026): Water and sediment microplastic dynamics in African inland freshwater systems: a review, Chemistry and Ecology, DOI: 10.1080/02757540.2025.2611985
  

• Long Zhu, Wei Pan, Xiaoli Zhao, Feifei Wang, Chen Wang, Yulin Kang, Zhaomin Dong, Bing Shao, Fengchang Wu & Lihui AN (2024) Insights into human exposure to microplastics through drinking water: Current state of the science, Critical Reviews in Environmental Science and Technology, 54:24, 1875-1901, DOI: 10.1080/10643389.2024.2371622
  

• Johnson C. Agbasi, Johnbosco C. Egbueri, Chaitanya B. Pande, Mohd Yawar Ali Khan, Joshua O. Ighalo, Henry C. Uwajingba & Sani I. Abba (2025) Review of the Potential Effects and Remediation Strategies of Microplastic Pollutants in Drinking Water Sources, Analytical Letters, 58:5, 799-839, DOI: 10.1080/00032719.2024.2343366