Urban Drinking Water Safety Monitoring Solution

Urban Drinking Water Safety Monitoring Solution: Building an Intelligent Protection Network from Source to Tap

Industry Pain Points and the Necessity of Online Monitoring

Urban drinking water safety is the most basic red line for maintaining urban operation and citizens' health. Although water treatment plants generally meet effluent standards, water quality safety faces severe challenges during long-distance pipe network transportation and complex secondary water supply processes.

Industry Problems

Secondary pollution caused by aging pipe networks: Urban water transmission networks are complex. Some old pipelines suffer from corrosion, scaling, or leakage, easily introducing sediment, rust, and external pollutants.
Blind spots in high-rise secondary water supply supervision: If secondary water supply facilities such as community reservoirs and high-level water tanks are poorly managed, they can easily breed bacteria and red worms, or experience events where residual chlorine is completely depleted leading to excessive bacteria.
Extremely poor timeliness of traditional manual testing: Relying on periodic manual sampling by disease control centers or water supply units, testing is usually done every few days or weeks. It is impossible to respond promptly to sudden events such as pipe bursts or deliberate contamination of reservoirs.

Why Online Monitoring is Needed?

Drinking water safety allows no room for post-event response. Monitoring points must be moved forward to water consumption terminals such as residential communities, schools, and hospitals. Through 24-hour uninterrupted online monitoring, management departments can take shut-off and diversion measures at the first moment of abnormal water quality indicators, preventing contaminated water from entering households and eliminating hazards at the budding stage.

What Our System Can Solve

The urban drinking water safety online monitoring system designed by YEXsensor uses high-precision, reagent-free sensor combinations to lock key indicators in the water production and supply process in real time. The system can identify turbidity spikes caused by pipe bursts or residual chlorine depletion due to prolonged water storage in tanks within seconds, achieving a leap from "blind extensive management" to "precise digital IoT" and comprehensively improving urban water supply safety levels.

Urban Drinking Water Safety Monitoring Solution Application Scenarios

Key nodes of tap water pipe network: Deployed at main urban pipe networks, pressure conversion stations, and intermediate booster pump stations to fully grasp water quality changes during transportation.
Residential community secondary water supply tanks: Installed at the outlet of underground reservoirs or high-level water tanks in high-rise residential buildings to strictly prevent secondary pollution.
Water terminals in public sensitive places: Core areas with high water quality requirements such as schools, hospitals, large commercial complexes, and high-tech parks.
Direct drinking water and water vending terminals: Pre-monitoring for campus direct drinking water systems and community intelligent automatic water vending machines.

Urban Drinking Water Safety Monitoring Solution System Components

The system adopts highly integrated and modular design to meet installation needs in various complex environments such as indoor pump rooms and outdoor pipe network monitoring wells.

Core Monitoring Parameters and Hardware Selection

Monitoring Indicator	Sensor Model	Measurement Principle & Application Value
Turbidity	YEX-S1-ZS	90° scattered light principle: Used to detect suspended solids, sediment and rust. Sudden turbidity changes usually indicate pipe bursts, water theft or valve operations causing detachment of pipe wall deposits.
Residual Chlorine	YEX-S1-CL	Constant voltage electrode principle (reagent-free): Monitors residual disinfectant concentration. Low residual chlorine leads to rapid bacterial growth; high levels affect taste and may produce carcinogenic by-products. No expensive chemical reagents required.
pH Value	YEX-S1-PH	Glass electrode method: Monitors acid-base balance. Dramatic pH fluctuations usually indicate external acid-alkali chemical pollution or severe leaching from pipe materials.
Conductivity (EC)	YEX-S1-EC	Two/four-electrode principle: Monitors changes in total dissolved solids. Sudden sharp increase in EC directly indicates intrusion of unknown external sewage or industrial wastewater.

Key Features

Pure physical green detection, zero secondary pollution
Integrated wall-mounted design, plug and play
Edge intelligent linkage with false alarm prevention mechanism
Extremely low daily maintenance rate

System Architecture

The overall data topology clearly presents the business closed loop from water supply terminal to monitoring center:

[Urban Water Supply Terminal Perception Layer] → [Edge Processing & Transmission Layer] → [Cloud Application Decision Layer]

YEX-S1-ZS Turbidity, YEX-S1-CL Residual Chlorine, YEX-S1-PH pH, YEX-S1-EC Conductivity → YEXsensor Online Monitoring Terminal (with local LCD screen) → YEXsensor Water Quality Cloud Platform (via 4G/LoRa)

Customer Value and Benefits

Comprehensively avoid public health risks
Significantly improve complaint handling efficiency
Drive smart water affairs transformation

Project Cases

Case 1: Secondary Water Supply Tank Safety Renovation Project in a Prefecture-level City in East China

Background: Dense high-rise residential buildings with frequent complaints about odor and yellow water.

Solution: Installed integrated drinking water online monitoring cabinets in 120 high-rise residential communities, monitoring residual chlorine, turbidity, pH and conductivity with data transmitted to the municipal water affairs bureau platform.

Results: Completely eliminated "yellow water" blind spots and successfully identified 3 low residual chlorine risk points in summer 2025, reducing water quality complaints by 85%.

FAQ

Q1: Does your residual chlorine sensor (YEX-S1-CL) require regular addition of reagents like traditional equipment?
Answer: No. YEXsensor uses constant voltage electrode measurement principle and does not use any chemical reagents, truly zero consumables and maintenance-free.

Q2: Drinking water turbidity requirements are very low (below 1 NTU). Can your turbidity sensor (YEX-S1-ZS) achieve the required accuracy?
Answer: Yes. The sensor is designed for low turbidity water bodies with resolution up to 0.01 NTU and excellent linearity in the 0-10 NTU range.

Q3: Why is conductivity included in the monitoring parameters? What significance does it have for drinking water safety?
Answer: Sudden sharp changes in conductivity usually indicate intrusion of external high-concentration wastewater or serious chemical leaching from pipe materials, serving as a frontline sentinel for sudden external pollution.

Q4: Air bubbles are often present in water supply networks. Will they affect the accuracy of the turbidity sensor?
Answer: The system is equipped with a patented physical defoaming flow cell at the inlet to separate bubbles, ensuring measurement accuracy.

Q5: How often do sensors need on-site maintenance and calibration?
Answer: Due to the high cleanliness of tap water, maintenance is recommended every 3 to 6 months. Single maintenance takes no more than 15 minutes.

Q6: Does the system support data docking with our local water affairs or environmental protection bureau platforms?
Answer: Yes, it fully supports standard Modbus-RTU, MQTT, and HTTP protocols.

Contact Us

Choosing YEXsensor means choosing technological protection for every glass of drinking water for millions of urban families. Welcome to contact our senior project managers for detailed selection plans, installation drawings or quotations.

Technical Consultation: +8615111147890

Email: sales@yexsensor.com

SOLUTION