The U.S. Army Corps of Engineers will begin using ammonia next month to treat drinking water in the District and Virginia, a move that officials believe will reduce the risk of cancer linked to a lifetime of drinking chlorinated water.
The new treatment, which is to be announced today, also is expected to make drinking water smell less like a swimming pool when customers tilt a glass of it to their noses.
But the addition of a new treatment chemical will require some special precautions for people who own fish tanks and patients who need kidney dialysis treatment.