11.   Clean Harbors, a Quincy, Mass. firm, has to gather up and treat the water that remains.

12.   Companies would no longer be required to treat waste water before piping it to a municipal plant.

13.   Filtering the household water can be an effective way to treat tainted water.

14.   For the first time, urine and wash water will be treated together.

15.   Generally, enough chlorine is used to treat the water all the way from the plant to your home.

16.   GUC crews shuttled by boat to the water plant while trying Wednesday to dry out the facility and reactivate water pumps that treat water from the Tar River.

17.   If the green system treats the water naturally to meet the new standards, the savings to the company would be clear.

18.   If the water is not properly treated, it can pollute the wells.

19.   If the source is a municipal supply, the water should be treated by distillation or reverse osmosis, the agencies said.

20.   If standards are too tough, treating the water could get expensive, which would discourage cities, counties and utilities from recycling it.