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Water Quality Solutions
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Municipal Water Quality Monitoring

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When water quality counts, Hach measures.

Be confident in your drinking water safety with industry-leading instrumentation.

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What is Jal Jeevan Mission (JJM)?

Jal Jeevan Mission (JJM), an initiative by the Government of India under the Ministry of Jal Shakti, that aims to provide Functional Household Tap Connections (FHTCs) to every rural household. The mission emphasizes source sustainability, community participation, and real-time water quality monitoring to ensure safe and sustainable drinking water supply.More than just infrastructure, the mission champions source sustainability, community ownership, and digital water quality monitoring to ensure long-term water security.
As of April 2025 (source: official website) , over 80.47% of India’s rural households are already connected—empowering communities, reducing disease, and driving progress under the banner of Har Ghar Jal.

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Why Water Quality Monitoring is Critical?

As JJM expands across remote and diverse geographies, ensuring water safety is as vital as delivering it. Two key quality parameters—Chlorine (for disinfection) and Turbidity (for clarity)—must be constantly monitored to ensure compliance with BIS 10500 standards for drinking water.

Key water quality challenges under JJM include:

  • Source Water Quality
  • Intermittent Water Supplies
  • Lack of laboratory infrastructure and field calibration
Why Water Quality Monitoring is Critical

 

The Challenge

Source Water

Source Water


  • Premature exhaustion of source (drying up of source)
  • Poor raw water quality
  • Pump assembly failure or insuffcient intake by pump
Water Treatment

Water Treatment


Insuffcient water output (quantity) or poor-quality water produced

Water Pipeline and Storage

Water Pipeline and Storage


  • Pump assembly failure
  • Overflowing/empty storage unit (e.g., ESR)
  • Frequent leakages and difficulty in detecting minor leakages; inadequate pressure in pipe
Water Distribution Network

Water Distribution Network


  • Inconsistent service delivery (outages, quality, low pressure, hours of supply)
  • Irresponsible/excess usage at household (HH) level; unauthorized connections resulting in high NRW

On-Site Challenges

On-Site Challenges

  • Drinking water schemes under JJM are typically having water supply for few hours in a day (typically 2 – 6 hours/day). This leaves no flow condition for several hours in day.
  • Ground Water Contaminations
  • Calibration of equipment’s related to WQMS and inadequate Laboratory Infra at scattered site locations.
  • Timeline Management.

Challenges in Monitoring Chlorine

  • As water supply is only for few hours in a day, no flow condition is significant challenge for Chlorine monitoring in amperometry method.
  • No flow condition will shorten Chlorine sensor life and needs early replacement of the sensor.
  • Also, Chlorine sensor requires warm up time when water supply restored during next day. Stabilization of readings will take at least 30-90 minutes.
  • As nature of Amperometry method, Chlorine monitoring has interference due to varying sample pH, Temperature, Flow and pressure. All these sample conditions will impact measurement.
Challenges in Monitoring chlorine

 

How Hach India Supports Jal Jeevan Mission

For decades, Hach has set the global standard in water analysis. We believe water quality monitoring is essential to delivering safe drinking water. Our mission is to support both rural and urban communities with accurate, low-maintenance, and digitally connected instruments designed to integrate seamlessly with the Jal Jeevan Mission’s centralized Water Quality Monitoring System (WQMS) offering solutions with reliable instruments, reasonable pricing, and dedicated support and service team.

Together, We are Turning Every Drop into Trust. Smarter, Safer Water Monitoring Made Easy.


 

Looking in to the JJM project application due to site challenges in terms of Solar power, intermittent water supply, water quality, pressure, flow, temperature etc., and compliance to BIS method to adhere IS10500 drinking water quality standard, we recommend DPD Chemistry based Colorimetry technology over Amperometry technology for these drinking water projects.

Hach Colorimetric Chlorine Analyzer Amperometric Chlorine Analyzer
Complies to IS3025-Part 26 BIS method.
Approved by CPHEEO		 Non-compliant to BIS method IS3025-Part 26.
Approved by CPHEEO
DPD Chemistry offers comparable results with Lab DPD measurements Different Method and will have large variations with lab DPD measurements.
Calibration is not required as it is preprogrammed sensor using Hach made reagents. Frequent calibration required against Lab DPD method.
No interferences due to pH, temperature, flow, pressure, chloride, hardness etc. Has significant interferences due to pH, temperature, flow, pressure, chloride, hardness etc.
Best for intermittent water supply schemes. No polarization time required. Built-in flow meter cuts-off reagent addition and stops analyzer operation. Intermittent water supply requires sensor polarization typically 30 to 360 minutes. Also this condition shortens sensor life and will cause early replacement of Chlorine sensor.
Predictive diagnostics through Modbus helps easy maintenance for remote operations. No predictive diagnostics. Unscheduled maintenance like frequent calibrations, reference electrolyte filling, membrane replacement, pH calibration, pH sensor replacement, Chlorine electrode cleaning and Chlorine electrode replacement.
Low on long term O&M High on long term O&M
Reliable monitoring offers peace of mind. Unreliable and high on maintenance.

 

Looking in to the JJM project application due to site challenges in terms of intermittent water supply, water quality, pressure, flow, temperature etc., we recommend DPD Chemistry based Colorimetry technology over Amperometry technology for these drinking water projects.

 


Solitax HS-line

Solitax HS-line sc – Immersion Turbidity & Suspended Solids Sensor

Relevant Applications:

  • Turbidity monitoring at distribution tanks, ESRs, and reservoirs
  • Reliable even in low-flow, high-particulate rural environments
  • Integrated auto wiper prevents fouling, critical for dusty, unmanned rural setups
  • Wide range: 0.001–4000 NTU
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SC200 Universal Controller

Key Applications:

  • Central hub for managing multiple sensors (chlorine, turbidity, pH)
  • Supports both digital and analog outputs for easy RTU/WQMS integration
  • User-friendly display & alerts, ideal for local Gram Panchayat operators

Why it's ideal for JJM: Unifies all water quality data in one place, making it easy to transmit results to state dashboards, flag issues, and ensure compliance even with minimal training and oversight.

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SC200 Universal Controller

 

TU5 Series Turbidimeters

TU5 Series Turbidimeters

The TU5 Series was built so you can be sure that a change in your turbidity reading is a change in your water.

  • Groundbreaking 360° x 90° DetectionTM Technology
  • Matching lab and online results
  • Everything about turbidity – faster
  • No Surprises
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PC1R1A sensor for Clean Water

Cost effective pH and ORP sensors for mild to aggressive water conditions with durable chemical resistant design optional temperature compensation and versatile mounting compatible with plug and play Hach SC controllers for real time monitoring in JJM projects

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PC1R1A sensor for Clean Water

 

 

The Solution

The initiative emphasizes public access to water quality data and alerts local authorities for prompt remedial action, ensuring effective policy implementation for assured service delivery. Chlorine and Turbidity are vital parameters for ensuring water safety before distribution. These parameters are monitored through online analyzers, which control Chlorine dosing and transmit data to the cloud via RTU for centralized management. To ensure a decade of reliable operation, it's crucial to choose online analyzers from reputable manufacturers with established facilities and high-quality standards.

The Results

Hach provides the right instruments for water quality testing, offering low maintenance and high reliability for remote operation.

 


Frequently Asked Questions

What is Jal Jeevan Mission?

It’s a government initiative to provide tap water to all rural households with a focus on sustainability, water quality, and community ownership.

Why is chlorine monitoring important in JJM?

Chlorine ensures disinfection. However, due to irregular supply and flow, it's critical to use analyzers that can adapt to rural site conditions.

Which Hach products are best for rural JJM sites?

Cl17sc for chlorine, TU5 turbidimeter, and portable colorimeters for field testing are ideal due to reliability and minimal maintenance.

How can I integrate Hach sensors with RTU/WQMS?

All major Hach analyzers support digital output protocols and can be easily integrated into JJM RTUs and dashboards.