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Understanding Auckland's Water Quality and What You Need to Know

Thursday 13 April 2023, 7:37AM

By Fabric Digital

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Auckland Harbour
Auckland Harbour Credit: Pexels

AUCKLAND

Water quality is an essential aspect of public health and well-being, and it plays a critical role in the daily lives of Auckland residents. From drinking water to maintaining the cleanliness of homes and gardens, understanding the local water quality is crucial. In this comprehensive guide, we will delve into the topic of water quality in Auckland, exploring its sources, common contaminants, the impacts of climate change, and the role of plumbers in ensuring safe drinking water.

Auckland's water supply comes from various sources, including surface water, groundwater, and rainwater harvesting. These sources are managed by Watercare, Auckland's water service provider. The majority of Auckland's water supply comes from surface water, which includes water from rivers, lakes, and reservoirs. The primary sources are the Waikato River, the Waitākere and Hūnua Ranges, and Lake Pupuke. Groundwater is extracted from underground aquifers through wells and boreholes and contributes a small percentage of Auckland's total water supply, primarily in rural areas. Some Auckland residents also collect rainwater through harvesting systems installed on their properties, which collect and store rainwater for later use, reducing the demand on the public water supply.

While Auckland's water is generally considered safe to drink, it can contain various contaminants that may affect its quality. Some of these contaminants include microorganisms, sediments and suspended solids, chemicals, nitrates, and phosphates. Microorganisms like bacteria, viruses, and protozoa can enter the water supply through faecal contamination from humans or animals. Watercare treats water to reduce the risk of waterborne diseases, but untreated water sources like rainwater tanks can still pose a risk. Soil erosion and runoff from urban and agricultural areas can introduce sediments and suspended solids into the water supply, affecting the water's taste, odour, and appearance. Industrial and agricultural activities can introduce chemicals into the water supply, including heavy metals, pesticides, and organic compounds, which can pose health risks if consumed in high concentrations. Fertilisers used in agriculture can leach into water sources, increasing nitrate and phosphate levels, which can lead to excessive algae growth, affecting water quality and aquatic life.

Climate change is posing new challenges to Auckland's water quality, as it affects the quantity and quality of available water sources. Key impacts include changes in rainfall patterns, rising sea levels, increased water temperatures, and strain on water resources. Climate change is causing shifts in rainfall patterns, leading to more intense rainfall events and longer dry periods. This can increase the risk of flooding and erosion, introducing more contaminants into the water supply. As sea levels rise due to climate change, saltwater intrusion into coastal aquifers can occur, affecting the quality of freshwater sources. Warmer water temperatures can lead to the growth of harmful algae, which can produce toxins and negatively impact water quality. Climate change can also lead to increased demand for water as populations grow and temperatures rise, placing pressure on existing water resources and potentially affecting water quality.

Homeowners can play a part in maintaining and improving Auckland's water quality by following several practices. Regularly maintaining and inspecting your plumbing system is essential; schedule routine plumbing maintenance to identify and fix potential issues before they become significant problems. Using water-saving devices and practices can also make a difference. Conserve water by using water-efficient appliances and fixtures, and practise water-saving habits like fixing leaks and collecting rainwater. Properly disposing of household chemicals and waste is crucial to prevent contamination of water sources. Dispose of chemicals, paints, and other hazardous materials at designated facilities. If you have concerns about the quality of your tap water, consider installing a water filter or treatment system to remove contaminants and improve taste and odour. Lastly, if you collect rainwater, regularly clean and maintain your rainwater tanks, gutters, and downspouts to ensure the water you collect is safe to use.

Understanding Auckland's water quality is crucial for the health and well-being of its residents. By learning about the sources of the city's water supply, the common contaminants that can affect its quality, the impacts of climate change, and the role of plumbers in ensuring safe drinking water, you can take steps to protect your household's drinking water. Remember to consult with trusted certified plumbers and drain layers for any plumbing-related concerns. A quality job is guaranteed when you work with experts who ensure a fantastic finish on every job.