Some of the main species of fish in Lake Ontario are walleye, trout and salmon. The Lake Ontario food web has been damaged by over-fishing, fluctuation in nutrient levels, industrial chemicals, agricultural fertilizers, untreated sewage, phosphates from laundry detergents, and pesticides. Some pollutant chemicals that have been found in the lake include DDT, benzopyrene, PCBs, chromium, lead, mercury, and carbon tetrachloride. Conclusion Future research into Lake Ontario’s aquatic health could be to study how the pollution has changed the ways we treat the water from the lake before human consumption. Over the years the water treatment methods have changed to adapt to poorer water conditions and by tracking these changes we may be able to further understand the negative impact that we are placing on the fresh water
Water is a critical source used all around the world to keep our way of life flowing. The use of water goes from regular house needs to creating energy in many ways. Around the world drinkable water starting to run low and the water stored is being contaminated by pollutants causing sickness and death. Countries are going through droughts which affects the water supply needed to maintain irrigation, and public supply. Water pollution is defined as the presence in groundwater of toxic chemicals and biological agents that exceed what is naturally found in the water and may pose a threat to human health and/or the environment.
Bailey McTigue Professor Wick ENC 1102 Writing and Rhetoric 13 February 2018 Water Pollution An Annotated Bibliography Critical Preface The problem that I care to research about is water pollution. As an environmentalist and someone who cares about the environment, I understand that water pollution is a big deal. I have always loved to research things that humans do to damage the environment. A cause of water pollution is oil spills from big oil tankers. Oil gets into the water and kills the marine life.
Atmospheric pollution is caused by pollutants such as smoke from factories entering the atmosphere and being carried to waterways. Industrial waste can also create polluted runoff that collects in rivers and lakes. Another reason for water pollution is chemically treated sewage. This water carries harmful chemicals and high amounts of bacteria, which can potentially lead to serious diseases. Runoff from fields can contain chemical fertilizers and pesticides which can pollute
Water contamination is one the world wide problems, which is directly affecting living organisms. There are several variety causes water pollutants like synthetic dyes used for textile dyeing, paper, plastics, leather, food, cosmetic industry, and other printing industries that causes severe ecological problems, because of their unacceptable color, biological degradation, toxicity, and carcinogenic properties, they are of great concern.. In order to solve this problem, many of researchers have developed some methods to degrading harmful dye from contaminated water like adsorption, flocculation, electrolyte decomposition, ion exchange method, biological methods, etc. These conventional methods are not suitable at large scale due to high
A study conducted by Marti et al (2013) found that the spread of antibacterial resistance genes came from wastewater treatment plant contaminants into the environment. Antibacterial genes were found more prevalent in downstream samples compared to upstream samples of bacterial communities. Antibiotic resistant genes have contaminated the public source water through the water supply system that allows antibiotics to thrive in the environment. To understand the mechanisms behind ARG, Cirz et al (2005) tested how inhibiting the pathway of a protease will affect E coli to gain resistance. Their findings showed that by inhibiting the mutation, it could be one of the possible ways of preventing bacteria from becoming resistant in the environment.
Nutrient pollution coming from agricultural runoff and other fertilizers allows for the growth of species that upset the balance of the ecosystem such as Cattail, harmful algae bloom, and duckweed. The sulfur in the agricultural fertilizers leads to accumulation of toxic mercury in fish, birds, and mammals. Also, exotic animals or invasive species displaced native and threatens to disrupt the ecosystem balance. The purpose of this experiment is to determine how the water quality affects the Everglades ecosystem and how water pollution impacts different species. Urbanization is a big threat that contributes to poor water quality in water pollution.
Generally those regions belong to South Asia, Central America, Africa and Southeast Asia. This arsenic contamination provides a multiple layered threat to further contamination on food chain. With crops, the contamination of arsenic is through intake from the soil itself and then compounded with contaminated water that is used for irrigation. When it reaches the population, in arsenic contaminated region, the threat is also increased not only from the crops but also from contaminated water used for drinking and cooking
aquatic organisms and disturb the integrity of the ecosystem (Mester and Tien 2000; Puvaneswari et al., 2006) by alters the pH, increases the biochemical oxygen demand (BOD) and chemical oxygen demand (COD).Dyes industries have also a serious role in environmental pollution. Dyes mainly used in paper, textile and leather industries. Pollutant released from these dyes industries cause water and soil pollution. Water and land pollution by dyes industries affect large numbers of people and environment. These pollutants affects in many forms.
This impacts our well being because, according to the website: The Mekong River- Survival for Millions, the water from rivers are the source of most of our drinking water. Eutrophication causes an abundance of bacteria to form in the river. If there is too much bacteria in the water, it will cause sicknesses and negatively impacts our health. However, if there is too much manure in the water, it will contaminate the water and negatively affect our health as well. This is why we should use animal manure in moderation.