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Sewer monitoring in the UK: continuous insight that prevents spills
Sewer networks are under unprecedented scrutiny. With 100% of storm overflows now fitted with Event Duration Monitoring (EDM) devices and 2023’s spill data elevating public attention, utilities need sewer monitoring that goes beyond occasional site checks—continuous level and CSO monitoring that spots blockages early, prevents pollution, and provides auditable evidence for PR24/AMP8. GOV.UK
At AQUAIOT, we deliver a deployable stack—robust level sensors, battery-efficient telemetry (cellular/LoRaWAN), anomaly detection and an operations-grade dashboard—already proven across UK wastewater assets, including thousands of vacuum sewer pots upgraded with our monitoring.
Why continuous sewer monitoring matters now
Compliance and transparency: EDM gives duration counts, but contextual level data helps explain why events occur and shows the impact of interventions across AMP8. GOV.UK
Blockages cost—and are avoidable: Studies show wet wipes are a leading cause of UK sewer blockages (≈93% of samples in one study), with more than 300,000 blockages a year costing ~£100m to address. Early level rise detection prevents spills and call-outs. Water UK
Storm Overflows Plan: Defra’s targets drive earlier action at sensitive locations (e.g., bathing and protected waters). Real-time monitoring is how you prove risk reduction. GOV.UK
The AQUAIOT sewer monitoring stack (what you actually get)
Sewer & CSO level sensors: ultrasonics/pressure for wet wells, rising mains, manholes and vacuum sewer pots—ruggedised, intrinsically safe options available.
Smart telemetry: LoRaWAN or cellular with multi-year battery life; encrypted payloads; remote configuration and firmware updates.
Events that matter: thresholds, rates-of-rise, and pattern-based alerts cut noise while catching genuine blockage signatures.
EDM context: ingest EDM activations and rainfall to correlate cause/effect at each overflow. Defra Data Services
Dashboard & reporting: live maps, trendlines, alarm history, and exports for regulators and internal governance.
Integrations: open APIs and RS485/Modbus options to share data with SCADA, AIMS/CAFM and analytics.
→ See our Sewer Monitoring Solution and Water Level Monitoring products.
Where sewer monitoring pays back quickly
CSO chambers & spill hotspots: detect pre-spill surcharging and reduce environmental incidents.
Vacuum networks: pot level trends reveal partial blockages and valve faults; fleet analytics reduce truck rolls. (See our Anglian Water upgrades.)
Foul & combined manholes: early warning of wipes/fats build-up; triage jetting crews by risk not rota.
Rising mains & wet wells: catch pump or control failures before alarms hit consent limits.
Gullies & inlets: storm screening and flood prevention with the same telemetry backbone.
How it maps to UK obligations
PR24/AMP8: Ofwat’s final determinations support substantial investment to improve river and bathing water quality. Continuous, auditable data demonstrates delivery against performance commitments. Ofwat
Storm Overflows Plan: monitor sensitive locations, show spill reductions over time, and evidence benefits of network upgrades. GOV.UK
EDM completeness: with every overflow monitored for duration, pairing EDM with level provides situational awareness your duty teams can act on. GOV.UK
What decision-makers gain
Fewer pollution incidents: faster, better-targeted response based on level-rise patterns—before a consent breach.
Lower OPEX: reduce unnecessary jetting visits; prioritise hotspots using evidence, not guesswork.
Defensible reporting: clear trendlines and audit trails for regulators, river trusts and the public.
Safer operations: fewer confined-space entries thanks to remote diagnostics.
Real results, not just dashboards
Our approach has already helped prevent overflows across 4,000+ vacuum sewer pots (Anglian Water), cutting disruption and improving response times. It’s the same playbook we use for combined and foul sewers—deploy fast, alarm on the right signals, and scale to catchment level.
Ready to scope a pilot? Talk to AQUAIOT → We’ll map sites, power/telemetry, and an AMP8-aligned rollout plan.
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