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The Watersafe All-In-One Drinking Water Test kit lets you easily and cheaply test your water for several common contaminants or conditions: bacteria, lead, two pesticides (atrazine and simazine), nitrate and nitrite, total chlorine, pH, and total hardness. We bought 14 of the kits online and from three different stores (we paid an average of about $18), then bought or prepared water samples with certified levels of the relevant contaminants, from completely clean through slightly contaminated to nasty. Then we put the kits to work.
Test results. The kits demonstrated an impressive ability to detect very low levels of most contaminants in 10 minutes or less, and all provided correct readings for hardness. Water tested for bacteria is supposed to turn purple (indicating clean water) or yellow (bacteria). Ten kits ...