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Case study

Yorkshire Water clears two blocked sewage pumps

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Yorkshire Water · Sewage pump blockage

SAM4 first detected a blockage on one pump. When the second pump began to block, Yorkshire Water sent a team to clear both pumps before the station could overflow.

Follow the response
Plan an inspectionAttend urgently
The measured outcomeTwo pumps / blockage scores
Both pumps’ blockage scores returned towards healthy levels after the maintenance team removed the obstructions. Green: pump 1. Pink: pump 2.
Station
Two co-located pumps
Initial response
Monitor for 48 hours
Urgency changed when
Both pumps were affected
After intervention
Both pumps back in service

How the team responded

The second blockage changed the response.

01

Detect and monitor

Pump 1 could handle the incoming flow

SAM4 detected signs of partial blockage on pump 2. Pump 1 could handle the incoming flow, so immediate attendance was not required.

Samotics advised monitoring for 48 hours to see whether the blockage would clear itself.

02
48 hours later

The blockage had not cleared after 48 hours

With no improvement, Samotics advised Yorkshire Water to schedule an inspection. The advice allowed the work to be planned for the following week while the other pump supported station operation.

03
A week later

A blockage on pump 1 required an urgent visit

SAM4 then detected developing blockage on pump 1. With both pumps affected, the risk of a pollution incident increased. An urgent red alert called for immediate attendance.

Yorkshire Water sent a maintenance team, lifted both pumps and found obstructions in each.

04

After maintenance

The team cleared both pumps

The team removed the obstructions and put both pumps back into service. Their blockage scores then fell, confirming that the maintenance had resolved the problem.

Yorkshire Water confirmed that the intervention prevented a potential pollution event.

The operational result

The team removed the blockages during the site visit

Both pumps went back into service. Yorkshire Water confirmed that the intervention prevented a potential pollution event.

Verified by Yorkshire Water

Estimated costs avoided

€190,000

Yorkshire Water verified the estimate of €40,000 in avoided maintenance costs and €150,000 for a potential pollution fine.

Cost breakdown

Avoided maintenance costs
€40,000
Potential pollution fine
€150,000
Total estimated costs avoided
€190,000
How the estimate is calculated

€40,000 + €150,000 = €190,000

The estimate covers the maintenance costs and potential pollution fine avoided by clearing the pumps in time. Yorkshire Water verified both amounts.

For your pumping stations

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Discuss your pump configurations and the information your maintenance team needs to prioritise its response.

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Both pumps after blockage removal

Published blockage scores for both pumps. Pump 2 remains high, pump 1 develops signs of blockage, and scores fall after maintenance.

Green: pump 1. Pink: pump 2. The published chart shows both pumps’ scores returning towards healthy levels after the blockages were removed. These are blockage scores, not measurements of sewage flow.