You might already know about the concerning issue of microplastics in our oceans and rivers. These tiny pieces of plastic, measuring less than 5mm, have been causing havoc in the environment and raising concerns about their impact on human health. But did you know that microplastics can also find their way into our drinking water through groundwater sources? Surprisingly, this area of research is still relatively unexplored, leaving us with many unanswered questions about the potential risks they pose to our health.



At the Geological Society of America 2020 Annual Meeting, a P.hd candidate Teresa presented groundbreaking research on microplastics in groundwater within a unique karst aquifer.


Now, you might be wondering, what is the big deal with microplastics in groundwater? Well, these tiny plastic particles can wreak havoc on ecosystems and human health alike. One of the reasons they are so problematic is their durability; plastic takes ages to break down naturally, leading to long-term contamination. This becomes even more worrisome when we consider how microplastics can transport harmful chemicals. As they move through the food chain, these toxins can accumulate and cause harm to organisms, leading to organ dysfunction, genetic mutations, and even death.



Imagine a fragile cave ecosystem, home to unique organisms like salamanders and blind fish. Any contaminants introduced to this delicate environment could cause irreparable damage. That is why it is crucial to understand how microplastics find their way into groundwater and how they travel through aquifers.


To tackle this issue head-on, Teresa and her Ph.D. advisor have been diligently collecting groundwater samples from a cave in Missouri throughout the year. They not only study the chemistry of the water but also analyze the concentration of microplastics. Interestingly, they found that during flooding events, microplastic levels in groundwater do rise. But here is the twist – even after the flooding subsides, a second peak of microplastics appears. The reason behind this phenomenon lies in the two sources of microplastics: those already present in the subsurface and those freshly delivered from the surface.


Understanding the sources of microplastics in groundwater is crucial because it helps us develop ways to prevent future contamination and safeguard our precious water sources. Groundwater can linger in aquifers for decades, and with plastics persistence, the risk of accumulating toxins becomes all too real.


So, why is this research important for you? As students, you are the future protectors of our planet. Knowing about the hidden dangers lurking beneath the surface can empower you to take action. By spreading awareness and supporting initiatives to reduce plastic pollution, you can make a real difference.



Next time you sip from a glass of water, remember the journey it took to reach you. Lets work together to keep our groundwater clean and safe for generations to come. After all, small steps can lead to big changes!


Stay curious and keep exploring!!