In many parts of Chennai, apartment residents are facing an unexpected and frustrating issue—no proper water or sewer connections, even years after construction.

The root cause? A major confusion between two similarly named but completely different charges collected by two separate authorities:

• Infrastructure & Amenities (I&A) Charges by Chennai Metropolitan Development Authority
• Infrastructure Development Charges (IDC) by Chennai Metropolitan Water Supply and Sewerage Board

Because both are commonly referred to as “infrastructure charges,” many residents—and even some officials—have misunderstood their purpose.

⚠️ Real Problem: Residents Paying Twice?

A striking case from Tiruvottiyur highlights the issue.

An apartment with over 237 families, built nearly 17 years ago, is still dependent on water tanker lorries and private sewage disposal.

The residents claim:

• Their builder already paid ₹1.05 crore as I&A charges to CMDA during planning approval
• Yet, Metro Water is demanding IDC at ₹320 per sq. ft. before giving connections

Naturally, residents are asking:
“If infrastructure charges were already paid, why should we pay again?”

🧩 The Core Confusion Explained

Let’s break it down clearly.

🏙️ What Are I&A Charges (CMDA)?

I&A charges are collected by CMDA during planning permission approval.

These funds are used for:

• Roads and flyovers
• Parks and public amenities
• Drainage and urban infrastructure

👉 These charges support city-level development, not individual building connections.

💧 What Are IDC Charges (Metro Water)?

IDC is collected by Metro Water when applying for:

• Water supply connection
• Sewer connection

These charges are used for:

• Laying pipelines
• Expanding sewer networks
• Enabling building-level connections

👉 These charges are specific to providing water and sewer access to your property.

🔍 Why This Has Become a Serious Issue

The confusion has led to multiple real-world problems:

❌ 1. Misinformation at Ground Level

In some cases, local engineers reportedly told residents that CMDA has not transferred funds to Metro Water, reinforcing the misunderstanding.

❌ 2. Delayed Water & Sewer Connections

Residents are stuck waiting because they assume no further payment is needed.

❌ 3. Financial Shock for Buyers

Unexpected IDC demands come years after purchase.

❌ 4. Dependence on Tankers

Without connections, buildings rely on:

• Private water tankers
• Costly sewage disposal services

🏢 Not Just One Case — A Citywide Pattern

This issue is not isolated.

In fast-developing areas like OMR:

• Many apartments were built during 2008–09
• At that time, water and sewer infrastructure was not fully developed

Now, residents are facing the consequences:

• Buildings exist
• People live there
• But infrastructure approvals and connections are still incomplete

🧠 Official Clarification (What Authorities Say)

A senior CMDA official clarified:

• I&A charges cannot be transferred to Metro Water
• They are meant for general urban development, not utility connections

Metro Water officials have also acknowledged:

• There is confusion among junior staff and residents
• Awareness needs to be improved

🏠 What Property Buyers Must Learn From This

This situation exposes a major gap in real estate awareness.

Before buying an apartment in Chennai, always verify:

✔️ Whether Metro Water connection is approved
✔️ Whether IDC has been paid
✔️ Availability of sewer network in the area
✔️ Completion Certificate and utility readiness
✔️ Not just CMDA approval—but actual service connections

⚡ The Bigger Insight

Planning approval does NOT guarantee water connection.

Just because a builder paid charges to CMDA doesn’t mean your home will automatically get Metro Water supply.

This gap between approval and actual infrastructure delivery is what’s affecting thousands of residents today.

🔎 How to Stay Safe

To avoid such issues:

• Verify utility connections before purchase
• Don’t rely only on builder claims
• Cross-check approvals with both CMDA and Metro Water
• Use professional due diligence tools and services

🧾 Final Takeaway

The confusion between I&A and IDC charges may sound technical—but its impact is very real.

Families are living without basic water access, despite owning approved apartments.

Until awareness improves and processes become clearer, buyers must take responsibility to verify every layer of approval—not just paperwork, but actual infrastructure readiness.