Can using too much chlorine create health issues in well water?

Water Chlorination Shock

Water chlorination shock occurs when too much chlorine is added to the water supply, causing a sudden and significant increase in chlorine levels. This can happen when a well is first chlorinated or when the chlorine dosage is too high. The American Water Works Association recommends a maximum residual chlorine of 1.0 mg/L after 30 minutes of contact time. If the chlorine level exceeds 2.0 mg/L, it can cause irritation to the eyes, nose, and throat.

Health Risks and Effects

Prolonged exposure to high levels of chlorine can lead to more severe health issues, such as bronchitis, asthma, and other respiratory problems. Chlorine can also cause skin irritation, including redness, itching, and blistering. In extreme cases, high chlorine levels can cause liver and kidney damage. The Environmental Protection Agency (EPA) has set a maximum allowable chlorine level of 4.0 mg/L in drinking water. However, it’s essential to note that this is a maximum allowable level, and it’s recommended to keep chlorine levels as low as possible.

Treatment and Removal

To prevent water chlorination shock and reduce the risk of health issues, it’s essential to use the correct dosage of chlorine and to provide adequate contact time. The recommended dosage for chlorinating well water ranges from 1 to 5 pounds of chlorine per million gallons of water, depending on the water quality and treatment requirements. After chlorination, it’s recommended to test the water regularly to ensure that the chlorine levels are within the recommended range. If the chlorine levels are too high, it may be necessary to install a chlorine removal system, such as an activated carbon filter or a UV treatment system.