…By Lola Smith for TDPel Media.
A recent study conducted along the south coast has uncovered a concerning “cocktail of chemicals” present in the water.
Researchers focused on the region between Chichester and Langstone harbours near Portsmouth, collecting 228 samples from 22 sites.
Their analysis identified over 50 compounds, including pharmaceuticals, pesticides, and illegal drugs.
Furthermore, the study found E.coli levels in the water to be 760 times higher than the safety limit set by the European Bathing Water Directive.
The source of these chemical contaminants is believed to be sewage discharges and farming pollution.
Chemical Contaminants: Pharmaceuticals and Pesticides
The investigation was carried out by the Clean Harbours Partnership (CHP), a group of concerned residents aiming to address pollution issues.
The collected samples were analyzed by researchers from the University of Portsmouth and Brunel University London as part of Project Spotlight.
The study revealed the presence of various pesticides, such as simazine, propamocarb, imidacloprid, and clothianidin, along with recreational drugs like cocaine.
These pollutants were found in marine organisms like crabs and oysters, as well as coastal waters.
The research emphasized the potential threats posed by pharmaceuticals and farming practices, including biocides and fertilizers, to aquatic ecosystems.
Environmental Impact of Pharmaceuticals
Professor Alex Ford, from the University of Portsmouth’s School of Biological Sciences, highlighted the importance of addressing the release of pharmaceuticals into aquatic ecosystems.
Previous research by Prof Ford has shown that antidepressants in water can adversely affect the behavior, growth, reproduction, and even color of crustaceans and molluscs.
He emphasized the need to take the issue seriously, considering the significant quantity of prescription drugs reaching wastewater treatment plants and subsequently entering marine environments.
Elevated E.coli Levels and Health Risks
One sample taken by the CHP near an outflow pipe from Budds Farm treatment works near Langstone revealed alarming levels of E.coli.
The reading showed 380,000 colony forming units (cfu) per 100ml, significantly exceeding the safe threshold of 500cfu/100ml established for human health.
This finding raises concerns about the risks posed to individuals exposed to such contaminated water.
Public Concern and Future Research
The CHP, through community funding and support from organizations like the University of Portsmouth, aims to shed light on the extent of chemical pollution in coastal waters and identify its sources.
CHP cofounder Rob Bailey expressed worry about the presence of long-lasting pesticides and partially digested pharmaceuticals, including drugs for diabetes and bladder infections.
He highlighted the lack of knowledge regarding the impact of these pollutants on marine life.
The study’s findings have sparked public shock regarding the scale of sewage discharges and the perceived inadequacy of authorities in managing these environmental threats.
Project Spotlight, funded by concerned residents and community partners, aims to drive change by uncovering chemical contaminants impacting coastal environments and influencing policy decisions.
Conclusion:
The study conducted along the south coast revealed a concerning mixture of chemicals in coastal waters.
Pharmaceuticals, pesticides, and illegal drugs were detected in marine organisms and coastal areas.
The research underlines the need to address the release of pharmaceuticals into aquatic ecosystems and the potential threats they pose.
Elevated E.coli levels in certain areas raise health concerns.
The study has ignited public concern and prompted efforts to investigate and address chemical pollution in coastal waters, with the aim of influencing policy decisions and fostering change.