Chlorination & Safe Water Dispensers¶

Chlorine Dispenser

Chlorination is the most widely verified, cost-effective water treatment intervention globally, validated by decades of randomized controlled trials (cRCTs) and endorsed by GiveWell.

Dispensers for Safe Water (Evidence Action)¶

Point-of-Collection Hardware: A durable 5-liter UV-resistant chlorine tank mounted directly beside community water points (wells, boreholes, taps).
Volumetric Dosing Valve: Users turn a rotary valve that dispenses exactly 3 mL of dilute sodium hypochlorite (NaOCl) into a standard 20-liter jerrican.
Residual Protection: Unlike filters, chlorine leaves a Free Residual Chlorine (FRC) of 0.2–0.5 mg/L that prevents re-contamination during transport, hand contact, and household storage for up to 48 hours.
Cost-Effectiveness: ~$1.50 USD per person per year including supply chain delivery and community promoters.

Official CAWST Chlorination Training Toolkits & Workshop Resources¶

All materials below are open-access, licensed under Creative Commons, and directly downloadable for field training:

1. Workshop Facilitator Toolkits¶

📄 Safe Chlorination for Drinking Water Trainer Manual: Download Trainer Guide — Complete session-by-session training guide for organizing community chlorination workshops, explaining chlorine demand, pH effects, contact times, and jar testing.
📄 Participant Workbook (Chlorination for Safe Drinking Water): Download Printable Trainee Workbook — Trainee workbook designed to be printed for water committee members and community chlorination promoters.

2. Interactive Training Aids & Field Dosing Tools¶

🃏 CAWST Chlorination Card Game: Download Educational Game Cards — Hands-on card game used in village workshops to help participants master how turbidity, pH, and contact time affect chlorine disinfection efficacy.
📄 Safe Chlorination Workshop Resource Collection: Explore Full Chlorination Collection — Access localized case studies, dosing charts for calcium hypochlorite (HTH) powder and liquid sodium hypochlorite, and pool tester / DPD-1 comparator instructions.
📄 Chlorine Disinfectant Spray & Surface Solution Guide: School & Clinic Hygiene Guidelines — Technical recipe for preparing chlorine cleaning solutions for health clinics and kitchen surfaces.