At the end of each definition in this Glossary there is a number in brackets. This indicates the number of the Study Session where the term is first used in this OpenWASH module.
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
group of toxic chemical pollutants that persist in the environment i.e. they do not break down by natural processes e.g. mercury, lead, cadmium, nickel, chromium and others (4)