Why Monoclor® RCS Outperforms Traditional In Line Dosing

Traditionally water disinfection chemicals (Chlorine and Ammonia) have been dosed in-line to adjust pathogen fighting residual levels in the distribution network. The Monoclor RCS can be utilized to control these residual levels inside water storage tanks to allow a precise level of residual in the place where most of the water is held. This advancement gives operations teams all over the world better options for maintaining a residual at the desired level without the guesswork. See how these methods compare below.

1. It’s an intelligent closed-loop system

Monoclor RCS continuously analyzes tank water quality and automatically adjusts dosing based on real-time data.

• In-line dosing simply injects a fixed chemical amount without verifying whether the dose achieved the target residual.
• Monoclor RCS uses advanced sensors + algorithms to calculate the exact chlorine or chlorine/ammonia ratio needed.

Result: More accurate residual control, fewer operator interventions, and far less risk of over‑ or under‑dosing.

2. It mixes the entire tank—something in-line dosing cannot do

In-line systems inject chemicals into flowing water but do not ensure full tank homogenization. Monoclor RCS includes powerful tank mixing to:

• Eliminate thermal stratification
• Ensure disinfectant is evenly distributed
• Prevent pockets of low residual that trigger nitrification events

Result: Uniform chemistry throughout the tank, not just at the injection point.

3. It solves chloramine breakpoint chemistry challenges

Chloramine systems are notoriously complex—dosing the wrong ratio can cause nitrification. Monoclor RCS automatically determines whether to add:

• Chlorine only
• Ammonia only
• A precise chlorine-to-ammonia ratio based on the tank’s position on the breakpoint curve.

Result: Reliable chloramine boosting without destabilizing the system.

4. It dramatically reduces flushing and water waste

Utilities using in-line dosing often rely on flushing to correct low residuals. Monoclor RCS maintains stable residuals, allowing utilities to:

• Eliminate or greatly reduce flushing
• Avoid deep cycling
• Reduce water loss and operational costs

Result: Lower O&M costs and improved system reliability.

5. It provides remote monitoring, alarms, and data logging

In-line dosing systems typically lack integrated monitoring. Monoclor RCS includes:

• Real-time data logging
• Remote access
• Alarm redundancy and fail-safes
• Automated response to water quality upsets

Result: Operators gain visibility and control across the entire distribution system.

6. It’s a complete residual management platform—not just a chemical feed

Monoclor RCS integrates four functions:

• Mix – homogenize the tank
• Monitor – analyze water quality
• Intervene – dose chemicals precisely
• Maintain – automatically hold setpoints over time

In-line dosing performs only one of these steps.

Summary Table