Grey water would be ok for stuff like flushing toilets, but not so good for irrigation. Why? Most detergents are high in sodium, and sodium gradually renders soils "sodic", unhealthy for many plants, and can turn clays into a cement-like substance. Add to that the boron, chlorine, etc in grey water and it's just not so good for growing plants.
I had my well water analyzed and it's not potable (too high in nitrates, among other things) but it seems to work just fine for irrigation. It is hard water (creates a nice precipitate when mixed with washing soda) but the plants seem to like that. It sucks for washing cars or filling fish ponds, though.
The well must be deep, or the water table high, because I've never had it go dry, even after extended use. Free water, just for the cost of pumping it. There's a big reservoir in the hills above town, so I figure it's replenishing the aquifer continuously.
I had my well water analyzed and it's not potable (too high in nitrates, among other things) but it seems to work just fine for irrigation. It is hard water (creates a nice precipitate when mixed with washing soda) but the plants seem to like that. It sucks for washing cars or filling fish ponds, though.
The well must be deep, or the water table high, because I've never had it go dry, even after extended use. Free water, just for the cost of pumping it. There's a big reservoir in the hills above town, so I figure it's replenishing the aquifer continuously.