Water that comes straight from natural sources, dubbed “raw water,” is gaining popularity. Raw water advocates reject public ...

This leaves the people who drink it vulnerable to infectious microbes or potentially other toxic contaminants ... nutrients ...

This leaves the people who drink it vulnerable to infectious microbes or potentially other toxic contaminants ... excluded by the filtration process. Test kits can determine the mineral content ...

Nitrate is not toxic to plants or animals ... Phosphates can cause algae blooms, which like nitrogen, can lead to hypoxic conditions and dead zones. To test for phosphorous, you will need a phosphate ...

Masterton’s Henley Lake has been closed to recreational users due to high levels of toxic algae. The lake is home to waka ama, dragon boating, and motorised model boating, but all of this ...