---
title: "Landslip Runoff Paralyzes Pazhassi Treatment Plant as Turbidity Spikes"
url: https://projectchintan.com/article/landslip-runoff-paralyzes-pazhassi-treatment-plant-as-turbidity-spikes-k6qum
publisher: Project Chintan
author: Project Chintan Newsroom
section: India
published: 2026-08-02T19:05:34.000Z
modified: 2026-08-02T22:00:34.401Z
language: en-IN
---

# Landslip Runoff Paralyzes Pazhassi Treatment Plant as Turbidity Spikes

Massive silt inflow from upper catchment landslides has forced the Kerala Water Authority to halt water production for Kannur. Supply lines remain dry as engineers wait for raw water cloudiness to drop below critical thresholds.

## Key takeaways

- Pazhassi treatment plant suspended operations on August 2, 2026, after turbidity reached 125 NTU, well above the 50 NTU treatment threshold.
- Landslides in the Karnataka upper catchment areas are responsible for the massive silt and mud inflow into the Pazhassi reservoir.
- The 30 MLD supply to Kannur town, Chirakkal, and Valapattanam remains disrupted until raw water clarity improves.
- Engineers are monitoring water quality hourly to resume pumping as soon as suspended particle levels decline to manageable limits.

## Turbidity Levels Breach Filtration Capacity

Drinking water production at the Pazhassi dam facility ground to a halt on Sunday, August 2, 2026, following a surge in raw water turbidity. Technical evaluations conducted the previous night, August 1, revealed that the mud content in the incoming water had reached 125 Nephelometric Turbidity Units (NTU). This measurement, which tracks how suspended particles scatter light, far exceeds the 50 NTU limit required for the plant's filtration systems to function efficiently.

Kerala Water Authority (KWA) engineers clarified that the shutdown stems from physical operational limits rather than chemical contamination. When NTU levels spike to this degree, filter beds clog almost immediately, causing a sharp decline in overall treatment capacity. Staff are currently conducting hourly quality tests to determine when pumping can safely resume.

## Landslides and Forest Runoff Drive Supply Crisis

The sudden influx of silt is linked to severe weather conditions in the forested upper catchments, reportedly located in Karnataka. Heavy rainfall triggered landslides and intense runoff, carrying massive volumes of debris into the Pazhassi reservoir. The plant serves as a vital utility for the region, typically processing 30 million litres a day (MLD) for consumers in Kannur town and neighboring areas like Valapattanam and Chirakkal.

### Operational Outlook and Consumer Impact

Supply disruptions are expected to persist as long as heavy rainfall continues to wash soil into the dam's feeder streams. KWA officials noted that the timeline for recovery depends entirely on the raw water clearing naturally. Residents in the affected zones have been advised to conserve their current water stocks until the turbidity levels subside and the filtration process stabilizes.
- Total capacity affected: 30 million litres per day.
- Primary cause: Landslides in Karnataka catchments.
- Technical hurdle: Turbidity measured at 125 NTU against a 50 NTU operational ceiling.

Source: The Hindu — National

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Canonical: https://projectchintan.com/article/landslip-runoff-paralyzes-pazhassi-treatment-plant-as-turbidity-spikes-k6qum
Reported from: The Hindu — National