Winter
Freezing and Expansion[edit]
Freezing temperatures can cause problems with pipes and cisterns exposed above the frost penetration line[1]. This maybe a significant issue for rainwater harvesting systems, including residential rain barrels.
Salt and Snow[edit]
Salt accumulation can cause acute problems, killing off sensitive vegetation in just one winter season.
Snow off asphalt areas is a significant vector for salt, so areas where snow sill be stored should be selected with care.
Chlorine is an environmental contaminant .