Are there any nitrates or pesticides in tap water?
A- Nitrate comes from fertilisers and oxidation of sewage effluents. Too much nitrate can be harmful to young babies (it may cause symptoms of blue baby syndrome). The standard for nitrate has been set to avoid this, and there has not been a case reported since 1972. Where necessary water companies are required to reduce nitrate levels in drinking water. Pesticides come from their use by farmers, gardeners, railways and highways authorities. The standard for individual pesticides is very stringent. Where necessary, water companies have installed additional treatment and, as a result, pesticides have been virtually eliminated from drinking water.
