State health agencies generally regulate the water quality from home wells. As an example, Table 4.6.6 presents a list of recommended water tests for home wells in New Jersey. The list of tests is designed to ensure maximum water supply safety while keeping the cost of testing at a minimum.
As an absolute minimum, testing should include the co-liform test for bacteriological safety. Additional chemical testing is warranted:
1. if the home is located in a heavily industrialized area; near service stations, machine shops, or dry cleaners
2. if the home is near a hazardous waste source or a landfill
3. if the home is near houses that have reported problems
4. if the water has an unusual chemical taste, odor, or color
Testing for specific organic chemicals is usually expensive. For accurate and reliable results, tests should be performed in a state-certified laboratory.
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