. >> reporter: at wade smith's toledo home no one takes clean running water for granted. his family of five was among nearly half a million people who couldn't use the tap water over the weekend when toxins from a blue-green algae bloom contaminated the water supplies. >> you couldn't drink the water, do laundry or dishes. >> contact with the water could cause liver problems, vomiting and diarrhoea. the kids skipped bath time. >> the neighbours had a large pond worse case scenario we would have thrown them in there with a bar of soap. >>> scientists warn the source of the drinking water, lake erie, is still at risk. done? >> fish could die, plants in the bottom of the lake could die. we could kill the lake. >> reporter: of the great lakes, lake erie is the smallest by volume, and shallowest. it's surrounded by four states and canada. this is part of algae. >> yes. it's all algae growing, yes. some has the tox irk in it. >> yes. >> this environmental engineer says when it comes to the lake health, environmental problems goes deep. toledo. >> yes. all the water people drink

. >> at wade smith's home no one takes clean running water for granted. his family of five was among nearly a half million people who couldn't use the tap water over the weekend when toxins from a blue green algae bloom contaminated the water supply. >> you couldn't drink the water, couldn't do laundry, couldn't do dishes. >> city officials warned that contact with the water could cause liver problems vomiting and die re. his kids skipped bath time. >> our neighbors have a popped. worse case scenario we could have thrown them in with a bar of soap. >> lake erie is still at risk. >> what is the long term impact? >> fish could die, off the bottom, we could potentially kill the lake. >> of the great lakes, lake erie is the smallest by volume and shall owest, it's surrounded by four states and canada. >> this is part of what we've been calling algae? >> it's all algae growing. yes. >> some of these pieces of algae have the toxin in it. >> they would have the toxic in it. >> reporter: but when it comes to erie's financial health, they warn it has problems that

. >> reporter: at wade smith's toledo home, no one takes clean running water for granted.is family of five was among half a million who couldn't use the tap water over the weekend when toxins from a blue-green algae bloom contaminated the supply. >> you couldn't drink the water, do laundry or dishes. >> reporter: toxins are no longer a threat, but lake erie is still at risk. what is the impact if nothing is done? >> fish could die, plants in the bottom of the lake could start to die. we could potentially kill the lake. >> reporter: when it comes to erie's health, an environmental engineer warns it has beg problems. algae feeds off foss ferrous, a plant nutrient flowing into the lake from farms, run off. >> we are giving them a candy. >> excessive algae forms maps or blooms. in the 1960s, the lake was declared dead because oxigep was cut off to animals, choking the lake. >> this is a band-aid. fertilizing practices for our agricultural businesses and farmers - they need to adjust the type of fertiliser that uses less foss ferrous and nitrogen. >> i don't want anyone to be a

. >> at wade smith's toledo area home, no one takes clean running water for granted. his family of five was among nearly a half million people who couldn't use the tap water over the weekend, when toxins from an algae bloom contaminated the water supply. >> you couldn't drink the water, do laundry or dishes. >> the toxins no longer an immediate threat but design activities warn the source of the drinking water, lake erie, is still at risk. >> what is the potential long term impact? >> fish could die, the plants in the bottom of the lake could start dying, so we could potentially kill the lake. >> when it comes tier res future health, environmental engineer isabel escobar warns the problems could go deep. algae feeds off run off from chemicals and sewage. >> we are giving this man made candy for them and they are growing, multiplying. >> it forms blooms. it's nothing new. lake erie was declared dead in the 1960's because massive blooms choked the life out of the lake. >> are things going to continue to get worse? >> the treatment that the water facility is a bandaid to

wade. excuse me. that one was from a man named john smith. that name ought to be easy to remember. re is another one. they lost 25,000, from e.b. wade. this is one of the greatest names. hippolyte oladowski, i think is how you pronounce it, johnston's chief of ordnance. he wrote, saying johnston lost 25,000 men during the campaign. this is a funny letter, from general g.w. smith, commander of the georgia militia during the battle of atlanta. and he wrote a letter to hood. he was an older fellow. it goes on and says, i wonder if old joe, which is johnston, did intend to leave my little band in charge of atlanta as his three corps and cavalry were hunting for sherman. wouldn't that have been a kettle of fish. he writes in this letter, where joe johnston was claiming, i was never planning to abandon atlanta. smith says, he surely was. these are on the battle of -- the spring hill affair. some of you are aware of this. it is where hood flanked general schofield's army and caught them in the open on the road in the middle of the night, cut them off, had them surrounded. i'm trying to use