Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

How to Make 0.1% Chlorine Solution to Disinfect Surfaces in Non-Healthcare Settings

How to Make 0.1% Chlorine Solution to Disinfect Surfaces in Non-Healthcare Settings
Updated Feb. 9, 2021

Use 0.1% (1,000 ppm) chlorine solution to disinfect frequently touched surfaces and items. Make new 0.1% chlorine solution every day. Safely dispose of any leftover solution in a latrine or toilet/drain connected to a septic system or sewer.

  1. Make sure to wear rubber gloves, a thick apron, closed toe shoes, a face mask and eye protection such as safety glasses to avoid splashes
  2. Proceed with only one of the following: 2a or 2b or 2c

    2a From Liquid Bleach (5%)
    Pour 400mL of 5% liquid bleach into a clean 20-L bucket, then fill bucket with water (or 1 part liquid bleach and 49 parts water for any volume)


    2b From HTH (70%)
    Add TWO tablespoons (30g) of high-test
    hypochlorite (HTH) (70%) to 20-L of water in a bucket.


    2c From Chlorine Powder (35%)
    Add FOUR tablespoons (60g) of chlorine powder (35%) to 20-L of water in a bucket.

  3. Stir well with stick for 10 seconds, or until chlorine powder/granules have dissolved.
  4. Label bucket “NOT FOR DRINKING OR HANDWASHING/BATHING. 0.1% Chlorine Solution – Disinfecting.
  5. Tightly cover bucket with lid.
  6. Do not store in direct sunlight. Store supplies in a secured location, out of reach of children and away from fire/flames

Supplies needed

  • Tablespoon
  • Graduated 1-L bottle or measuring cup
  • Bucket with lid
  • Water
  • 5% Liquid bleach OR 70% HTH OR 35% chlorine powder
  • Stick for stirring
  • Label

Do NOT mix chlorine solution with other cleaning products or chemicals.

Do NOT put chlorine solution in mouth or eyes.

Seek medical attention if chlorine is ingested or breathing becomes difficult due to exposure