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Is my chlorinator or chlorinated water going into a private septic system likely to harm the septic tank or drainfield? Do some septic systems require chlorine or other disinfectants? Will chlorine, bleach, or Clorox(TM) damage the septic tank or leach fields? This document explains how to extend the life of the septic system by being careful about what goes into it.

Citation of this article by reference to this website and brief quotation for the sole purpose of review are permitted. Use of this information at other websites, in books or pamphlets for sale is reserved to the author. Technical review, content suggestions, critique are welcomed and are listed at "References." This document is a chapter of Inspecting, Testing, & Maintaining Residential Septic Systems an online book on septic systems.

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CHLORINE IN DRINKING WATER - Water Chlorinators and Septic Systems

Using a chlorinator on well water: At homes where the water supply is not potable due to bacterial contamination, a common temporary solution is the installation of a chlorinator.

Often this consists of an injector which doses incoming water with chlorine, a holding tank to give the chlorine time to work, and a post-processing charcoal filter to remove the chlorine from the water. It's preferable to find and correct the source of contamination.

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WHAT CAN GO INTO TOILETS & DRAINS?
NEVER FLUSH INTO SEPTICS
BETTER NOT TO FLUSH
HOUSEHOLD CHEMICALS
OTHER CHEMICALS
CHLORINE IN DRINKING WATER
CHLORINE IN SEPTIC WASTEWATER
DISHWASHERS vs SEPTICS
DRUGS INTO the SEPTIC TANK?
GARBAGE GRINDERS vs SEPTICS
REVERSE OSMOSIS CONCENTRATE WASTE DISPOSAL
TOILET TISSUE?
TOILET TISSUE TEST
WATER SOFTENERS

• "Bacteria in Drinking Water" - "Chlorine," Karen Mancl, water quality specialist, Agricultural Engineering, Ohio State University Extension. Mancl explains factors affecting the effectiveness of chlorine in water as a means to destroy bacteria and other microorganisms. OSU reports as follows:

  Chlorine kills bacteria, including disease-causing organisms and the nuisance organism, iron bacteria. However, low levels of chlorine, normally used to disinfect water, are not an effective treatment for giardia cysts. A chlorine level of over 10 mg/1 must be maintained for at least 30 minutes to kill giardia cysts. -- http://ohioline.osu.edu/b795/index.html is the front page of this bulletin.

  Also see DRINKING WATER - EMERGENCY PURIFICATION.

More Information on Building Diagnostic Inspections and Repairs

• The Septic System Information Website home page for this topic


• Additives & Chemicals: Septic System Maintenance - Are they even needed? Are they even legal?
• Biomat Formation in the Septic System Drainfield Absorption System - what leads to drain field clogging and expensive drainfield repairs
• Buyer's Guide to Septic Systems - what to do when buying a home with a septic tank
• Cesspools Home Buyer's or Owner's Advice
• Cheating on Water Tests - (Chlorine in Wells and Septics) Testing Water for Real Estate Transactions - Water Test Cheating Warnings for Home Buyers and Home Inspectors
• Clogged Drain Diagnosis - is the problem the septic system or the Building drain system?
• Drywells Home Buyer's or Owner's Advice
• Contamination in Buildings how to test buildings for bacterial contamination from Sewage and Septic backup, remediation, & references
• Leach Field Inspection Procedure Septic Leach Fields - how to inspect and diagnose septic drainfield failures - what causes septic field failure?
• Maintenance: Ten Steps to Keeping a Septic System Working, suggestions from the U.S. EPA, edits and additions by DJF
• Septic Systems Inspection, Testing, & Maintenance Book - online textbook: how to inspect, maintain, repair septics
• Septic Tank Pumping Guide: When, Why, How to pump the septic tank
• Septic Tank Location - How to Find the Septic Tank, how deep will the cover be, how to document its location
• Sewage & Septic Backups and what to do about sewage spillage in buildings
• Tank Location - How to Find the Septic Tank, how deep will the cover be, how to document its location
• Tank Pumping Frequency Guide for Septic Tanks: When, How, What to Watch For when pumping or cleaning septic tanks
• Water Usage: Capacity: Determining Needed Septic Capacity - Typical residential water usage for people, appliances, and activities.
• What is a Septic System An Engineer's View & Septic System FAQ's

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