Quick Answer
Cistern water should be tested for contaminants every 6-12 months, or more frequently if there are signs of potential contamination, such as visible sediment, unusual odors, or changes in water clarity. Regular testing helps ensure the water remains safe for consumption. Testing should also occur after major rainfall events or when the cistern is refilled.
Understanding Cistern Water Quality
When it comes to buried concrete cisterns, regular testing is crucial to ensure the water remains safe for consumption. The frequency of testing depends on various factors, including the cistern’s age, usage, and surrounding environment. As a general rule, it’s recommended to test the water every 6-12 months, or more frequently if there are signs of potential contamination.
Testing Parameters and Methods
When testing cistern water, it’s essential to analyze for a range of parameters, including pH, turbidity, total dissolved solids (TDS), and bacteria such as E. coli and coliform. These tests can be conducted using standardized methods, such as the EPA’s 1600 and 1622 protocols. Additionally, testing for heavy metals like lead and copper may be necessary if the cistern is old or has been in contact with galvanized steel.
Maintenance and Upkeep
Regular maintenance is key to preventing contamination and ensuring the water remains safe. This includes inspecting the cistern for signs of damage or leaks, cleaning the intake and outflow pipes, and ensuring the cistern is properly sealed. It’s also essential to keep the surrounding area free of debris and contaminants, and to consider implementing additional treatment measures like sedimentation or filtration.
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