Tap Water, Bottled Water
The pH of the water is an indicator of the hydrogen ion concentration present in it. A pH of 0 means the solution is a strong acid; a pH of 14 means it is a strong base. If the pH is above 7.5, the water may have a poor taste.
High nitrate concentrations may be caused by leaking septic tanks, leaching from landfills, agricultural activity, or leaks from hazardous waste sites or underground storage facilities. Consumption of large amounts of nitrates may be hazardous to human health.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.