2000000 depending costeffective 2000 100000 ponds 50000 depending maintenance compliance larger tanks capacity 500l cost range 100000 sustainable future regulations ensuring provide reliable irrigation infrastructure labor design professional installation smaller homes existing infrastructure urban areas involved location pump installation typically starts carbon filters sand filters installation ranging expensive due affordable ranging harvested type open areas storage complexity complex systems agricultural systems system adheres process water move water system type design systems based diverters installation cost rainwater collection system site conditions installation irrigation additional costs land requirements filtration system requires pumps improve water quality allegiance water management budget quality components incur higher costs involve additional costs