Hurricane Response Guide for Environmental Public Health Professionals
8. Allow the chlorine solution to remain in the well and plumbing system for 8 hours or overnight 9. Avoiding areas that drain into lakes or streams or onto plants, flush the entire system outdoors until the chlorine smell dissipates. 10. Flush the indoor faucets until the water runs clear. 11. Change water treatment filters and clean treatment devices per manufacturer’s instructions, then put them back into service. 12. Retest your water supply for bacteria at least 2 days after disinfection to ensure the process was successful. If the bacteria problem persists, consider installing a continuous disinfection system of consult a licensed well contractor or water treatment professional to assess potential issues with well construction or location.
Volume of water in well Volume (gallons) = Pi (3.14) x Radius ft 2 x depth of water in well (ft) x 7.48 gallons/ft 3 Amount of chlorine Amount of chlorine required = Parts of chlorine desired x Volume of water x 100 1,000,000 % Chlorine (whole number)
Resources National Guidance and Standards Drinking Water Advisory Communication Toolkit NEHA Water Quality Resources Planning for an Emergency Drinking Water Supply
Forms Emergency Repair Form
EPA WARN Water System Status Report Natural Disaster Incident Report Form Photolog Suggested Questions for Water/Wastewater Utilities Damage Assessment Form Water System Status Report Regulations CFR Part 141: National Primary Drinking Water Regulations CFR Part 142: National Primary Drinking Water Regulations Implementation CFR Part 143: National Secondary Drinking Water Regulations Regulation Timeline: Contaminants Regulated Under the Safe Water Drinking Act Sampling Groundwater Sampling Industrial Stormwater Monitoring and Sampling Guide National Field Manual for the Collection of Water-Quality Data, Collection of Water Samples - USGS, 2019 Potable Water Supply Sampling Surface Water Sampling Sampling Guidance for Unknown Contaminants in Drinking Water
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