WATER AND MCS (MULTIPLE CHEMICAL SENSITIVITY)

Overview

This document provides an overview of current concerns about drinking water quality and practical guidance for individuals with Multiple Chemical Sensitivity (MCS). It highlights recent research findings, explains available water options, and outlines methods to reduce chemical exposure.

Key Concerns About Water

Recent research has identified several issues affecting both bottled and tap water:

• Recycled plastic bottles may introduce additional chemicals into water due to the recycling process and contamination from prior use.
• Microplastics and nanoplastics have been found in bottled and tap water, raising concerns about long‑term health effects.
• PFAS (“forever chemicals”) have been detected in some water supplies, including bottled water. While current standards limit exposure, long‑term effects are still uncertain.
• Water purification technologies vary in effectiveness for removing these contaminants.

Water Options for People with MCS

1. Bottled Water

• Spring and natural mineral waters may be easier to tolerate for some individuals.
• Mineral content and pH levels can influence tolerance.
• Glass bottles or bottles made with new plastic are preferable due to concerns about recycled plastic.
• Not all bottled water is natural; some may be treated municipal water.

2. Tap Water and Purification

Tap water is treated with disinfectants such as chlorine and chloramines, which may cause sensitivity in some people. Additional chemicals may also be present depending on the source.

Water Purification Methods

Different purification systems remove different contaminants:

• Activated carbon filters
  • Effective for chlorine and some chemicals
  • Limited effectiveness for very small particles
• Reverse Osmosis (RO)
  • Highly effective for removing microplastics and PFAS
  • May not remove all chemicals (e.g. some VOCs)
  • Can waste significant amounts of water
• Distillation
  • Nearly 100% effective at contaminant removal
  • Removes beneficial minerals
• Combination systems
  • Use multiple filters to improve overall performance

Important considerations:

• Some individuals with MCS may react to filter materials
• Maintenance, cost, and replacement frequency vary by system
• Some systems remove beneficial minerals, though remineralisation may be available

Types of Water Filters

• Filtering jugs
  • Convenient but limited effectiveness
• Portable/tabletop units
  • Often include RO systems
• Under‑sink systems
  • More effective, may require installation
• Whole‑house systems
  • Treat all water entering the home

Additional Practical Suggestions

Supporting Detoxification

Certain nutrients may help the body cope with chlorine exposure:

• Vitamin C
• Iodine
• Taurine

Bath and Shower Exposure

• Use tap or shower filters where possible
• Add vitamin C to bath water to neutralise chlorine
• Ventilate bathrooms to reduce inhalation of chemicals

Additional Approaches

• Some people explore treatments such as immunotherapy or homeopathic methods under professional guidance

Important Note

This document provides general information only. Individuals with MCS may respond differently to water sources and treatment methods, so careful personal testing is recommended.