How much does it cost to chlorinate a well?

Professional well chlorination typically costs $150-$500, depending on well depth, water volume, and whether additional services are needed. DIY shock chlorination costs $20-$50 in materials but requires proper knowledge and safety precautions.

How often should I chlorinate my well?

Most wells don't need routine chlorination. Shock chlorination is recommended after: positive bacteria tests, new well drilling or pump work, flooding events, extended periods of non-use, or when water develops odors or taste issues. Annual chlorination isn't necessary for properly constructed wells with clean water tests.

Can I chlorinate my well myself?

Yes, DIY shock chlorination is possible with proper preparation. You'll need unscented household bleach or well chlorination tablets, safety equipment, and knowledge of your well's specifications. However, professional chlorination ensures proper concentration, complete disinfection, and safe disposal of chlorinated water.

How long does well chlorination take?

The chlorination process itself takes 1-2 hours. However, the chlorine must sit in the system for 12-24 hours for effective disinfection. Then flushing the system takes 2-4 hours depending on well yield and plumbing extent. Total time from start to usable water is typically 24-48 hours.

What's the difference between shock chlorination and continuous chlorination?

Shock chlorination is a one-time treatment using high chlorine concentration to disinfect the entire system. Continuous chlorination uses an automated chlorine injection system for ongoing treatment—necessary for wells with persistent bacteria problems. Shock treatment costs $150-$500 once; continuous systems cost $800-$2,000 to install plus ongoing chemical costs.

Will chlorination fix my rotten egg smell?

Shock chlorination can eliminate hydrogen sulfide odor if caused by sulfur bacteria. However, if the smell is from sulfur in the groundwater itself (not bacteria), chlorination provides only temporary relief. Persistent sulfur odors may require ongoing treatment like chlorine injection, aeration, or specialized filtration.

Is chlorinated well water safe to drink?

After proper flushing, chlorinated well water is safe to drink. During shock chlorination, water is NOT safe and shouldn't be consumed. The flushing process removes chlorine to safe levels (below 4 ppm, similar to municipal water). Always test chlorine levels before resuming normal use.

Should I test my water after chlorination?

Yes, always retest for bacteria 7-14 days after chlorination. This waiting period allows any surviving bacteria to regrow to detectable levels. If bacteria returns, the source of contamination needs investigation—chlorination alone may not solve the underlying problem.