Get a Sigg water bottle or other aluminium water bottle or a glass water bottle and fill it with tap water. I purchased a Sigg water bottle a few years ago to carry water for my walk to and from the train everyday (it is getting warmer now so I get pretty thirsty). These water-bottles are generally more expensive than a plastic water bottle but for your health you should not drink out a plastic water bottle. I also just purchased a glass water bottle at Starbucks that I LOVE! I can actually see how much water I have left in the bottle.
Sigg (http://www.mysigg.com/) is the hip water bottle and the prices range from $15 to $30. They used to be hard to find but now you can get them at Target, Whole Foods, Walmart…etc.!
Make sure you fill it will tap water. If you are worried about what is in your tap water you can get it tested. You can get the Silverlake Research’s Watersafe All-in-One Kit at watersafetestkits.com. It measures levels of bacteria, chlorine, lead, nitrates, and pesticides (all calibrated to EPA standards). The home test kit starts at $19.95 but you could go all out and mail them a water sample for $149.95. To be honest you probably spend more on bottled water in a year anyway so if you really are worried it is worth it.
If you do not want to test you water but you are concerned about it you could get a Brita water filter to further ‘clean’ your water. Remember Dasani and Aquafina are only filtered tap water from the bottling plant but they happen to be in plastic bottles!
So grab a water bottle, fill it up with tap water… save the environment and your wallet!
Reminder on why plastic is bad for you read my post here.