Real-time visibility into disinfectant residuals — 

without routine reagents, grab sampling, or high-maintenance field instruments.


Metrics Water Solutions is developing next-generation chlorine monitoring technology for municipal drinking water systems. Our goal is to help utilities continuously monitor chlorine residuals across the distribution network, identify low-residual zones earlier, and improve confidence in water quality from the treatment plant to the end user.


The Problem

Distribution systems need better chlorine visibility...


Maintaining disinfectant residual in drinking water distribution systems is essential for microbial protection and regulatory confidence. EPA drinking-water rules recognize residual disinfectants as necessary for controlling microbial contaminants, while also setting maximum residual disinfectant levels for safety. 

Today, many utilities still rely heavily on periodic grab samples, handheld colorimeters, or centralized monitoring points. These methods are useful, but they leave gaps in time and location — especially in long distribution systems, storage tanks, dead-end mains, warm-weather conditions, and areas with changing water age.


MWS closes those visibility gaps.

The MWS Solution

A remote sensor platform for continuous chlorine residual monitoring

Metrics Water Solutions is developing a compact, field-deployable chlorine sensing platform designed for drinking water distribution networks. The system is intended to provide remote, real-time monitoring of chlorine residual trends without the operational burden of reagent-based analyzers.

 

Designed for:

  • Municipal drinking water utilities
  • Distribution system monitoring
  • Storage tanks and remote network points
  • Pilot deployments and field validation
  • Long-term water quality trend analysis

Technology goals:

  • Reagent-free operation
  • Remote data access
  • Low-maintenance field deployment
  • Continuous trend monitoring
  • Utility-scale monitoring across multiple points


Why It Matters

Better data enables better decisions


Residual chlorine can decay as water moves through the distribution system. Low residuals may indicate water age, high chlorine demand, biofilm activity, hydraulic issues, or operational changes. EPA guidance on maintaining disinfectant residuals specifically highlights the value of historical water-quality data and identifying locations or times where residuals are below thresholds.

 


By giving utilities more frequent and distributed chlorine data, MWS can support:

  • Faster detection of residual loss
  • Better flushing and booster-chlorination decisions
  • Improved understanding of water age and chlorine demand
  • Reduced reliance on manual sampling alone
  • Stronger documentation of distribution system performance