Water quality monitoring systems
· United Kingdom
Know exactly what's in
your water. Before it
becomes a problem.
your water. Before it
becomes a problem.
Real-time analytics, threshold alerts, and audit-ready records across every parameter that matters — from chlorine and pH to full-spectrum UV-Vis sensing.
UK-based engineering team
Retrofit-friendly deployment
Audit-ready records
Site Monitoring
Live
pH
7.24
Potential of Hydrogen
Turbidity
0.42
NTU
Free Cl₂
0.08
mg/L
Dissolved O₂
8.71
mg/L
Conductivity
342
µS/cm
Example readings for illustration purposes
What you can't see
is already costing you.
Reactive call-outs
Issues are flagged after damage is done, not before it starts. Every delayed alert is a cost you didn't have to carry.
Fragmented compliance
Manual records, missed checks, and audit gaps across sites. When an inspector asks for evidence, the scramble begins.
Hidden drift
pH, chlorine, or turbidity can shift for days or weeks before anyone notices. Without real-time monitoring, you're always reacting.
How it works
Continuous water quality monitoring sends instant alerts and keeps a full audit trail.
Three connected layers that turn raw sensor data into actionable intelligence, automatically.
1. Monitor
Connected sensors stream real-time data across all parameters, 24 hours a day. Cellular and LoRaWAN telemetry with encrypted payloads.
2. Alert
Threshold breaches trigger instant SMS, email, or app notifications. Escalation rules and role-based routing ensure the right person acts.
3. Respond
Cloud dashboards give your team the data, trendlines, and records they need, instantly. Every reading logged, every action auditable.
Full-spectrum capability
Water quality sensors for every parameter report into one system.
From standard chemistry to full-spectrum UV-Vis sensing, AQUAIOT covers every dimension of water quality your operation demands.
pH
SPS-pH Sensor
Continuous acidity and alkalinity monitoring. Detect corrosion risk, Legionella-risk conditions, and treatment performance drift.
Optimal drinking water pH: 6.5–9.5. Drift outside this range signals
treatment failure or infrastructure issues.
Turbidity & Suspended Solids
SPS-T-SC1 Sensor
Detect particulate contamination, filter breakthrough, and process upsets in real time.
Turbidity spikes are often the first indicator of pipe disturbance,
contamination ingress, or treatment failure.
Free Chlorine
SPS-CI-C Sensor
Continuous disinfection residual monitoring. Ensure treatment efficacy without manual sampling delays.
Chlorine residual below 0.1 mg/L creates microbial risk. Continuous
monitoring catches drops before they become incidents.
Dissolved Oxygen
SPS-DO Sensor
Monitor oxygen levels critical for biological process control, aeration efficiency, and environmental compliance.
Low DO in wastewater systems indicates biological stress; in
distribution it can indicate contamination ingress.
Conductivity
SPS-EC Sensor
Track dissolved mineral content and detect contamination events, cross-connections, or treatment changes in real time.
Sudden conductivity changes are a rapid indicator of intrusion, saline
ingress, or chemical contamination.
Full-Spectrum UV-Vis
SPS-F SpecSens Sensor
Specsens UV-Vis sensing at the edge. Detect organic load, humic substances, and complex contamination signatures beyond single-parameter sensors.
Full-spectrum sensing captures richer water quality signatures, ideal
for source water characterisation and treatment optimisation.
Colour
SPS-Color-C Sensor
Detect apparent and true colour changes that may indicate natural organic matter, iron, manganese, or treatment by-products.
Colour is a key aesthetic and compliance parameter, continuous
monitoring prevents visible discolouration events reaching consumers.
ORP
SPS-ORP Sensor
Oxidation-reduction potential monitoring for disinfection effectiveness, redox conditions, and process control in treatment and distribution.
ORP is a direct measure of disinfection power, falling ORP values
indicate that treatment residual is being depleted.
Want the full technical specifications for every sensor?
Download Datasheet
Parameters and sensors
Which water quality parameters can you monitor continuously?
A continuous water quality monitoring system can measure pH, dissolved oxygen, turbidity, conductivity, chlorine, ORP, ammonia and temperature, plus organic load such as COD and TOC through UV-Vis sensing. AQUAIOT supplies a sensor for each of these, and the iSPS-X instrument carries up to four sensors at one site.
| Parameter | What it tells you | AQUAIOT sensor |
|---|---|---|
| pH | How acidic or alkaline the water is, which drives treatment and discharge decisions | SPS-pH |
| Dissolved oxygen | Whether the water can support aquatic life. Levels fall after a polluting discharge | SPS-DO |
| Turbidity and suspended solids | Cloudiness and particles, an early sign of runoff or a treatment problem | SPS-T-SC1; SPS-T-SC3 for treated water |
| Conductivity | Dissolved salts, which reveal mixing, intrusion or a process change | SPS-EC |
| Free and total chlorine | The disinfectant left in treated and distributed water | SPS-CI-C; SPS-Cl; SPA-Chlorine analyser |
| ORP | Oxidising or reducing conditions, linked to how strongly the water is disinfected | SPS-ORP |
| COD, TOC and nitrate | Organic and nutrient load, read from UV-Vis absorbance without reagents | SPS-F full spectrum; SPS-M-Lxx |
| Ammonia and temperature | Ammonia nitrogen and water temperature, two of the Environment Act parameters | iSPS-X multi-parameter instrument |
| Colour | Visible colour, used in drinking water and process monitoring | SPS-Color-C |
What the Environment Act asks of sewerage undertakers
Section 82 of the Environment Act 2021 makes continuous water quality monitoring a legal duty upstream and downstream of storm overflows and sewage works. The Environment Agency's provisional guidance names dissolved oxygen, temperature, pH, turbidity and ammonia. Readings must be taken at least every 15 minutes at high-risk times and hourly otherwise, with every statutory asset monitored by 2035. The guidance accepts ammonium, combined with temperature and pH, as a proxy for ammonia.
Source: Environment Agency, Continuous water quality monitoring programme: provisional technical guidance for sewerage undertakers (April 2023).
Read more: Water quality parameters explained · What is ammonia monitoring? · COD and BOD in wastewater · What is a sonde?
Integrated systems
We supply complete IoT water quality monitoring systems as well as sensors.
AQUAIOT combines connected sensors, cloud visibility, and engineering support into end-to-end deployments built around your infrastructure.
iSPA-T
Multi-parameter Online Monitoring System
Integrated online monitoring system combining multiple sensing modalities, cloud telemetry, and dashboard connectivity in a single deployable unit.
View product
iSPS-X
Multi-parameter Measurement Instrument
Versatile multi-parameter instrument supporting simultaneous measurement across key water quality indicators with flexible sensor configuration.
View product
SPA Chlorine Analyzer
Free & Total Chlorine Water Quality Analyser
Dedicated chlorine analysis with continuous free and total chlorine measurement, built for treatment, distribution, and compliance-relevant applications.
View productFrom sensor edge to
operations dashboard
Every AQUAIOT deployment is built for the operational realities of UK water and estates teams, retrofit-friendly, open to your existing systems, and supported by engineers who understand what you're monitoring and why.
- Cellular + LoRaWAN telemetry with encrypted payloads
- Over-the-air configuration & firmware management
- RS485/Modbus · APIs for SCADA, AIMS/CAFM & analytics
- Role-based dashboards, trendlines, alarms & exports
- Exportable, audit-ready compliance records
Cloud platform
One dashboard holds every reading, alert and record.
Your monitoring data consolidated into a single cloud platform, built for operations, not just engineers.
pH Current
7.24
↑ +0.02 vs 1hr ago
Free Cl₂
0.08
⚠ Low threshold
Turbidity
0.42
NTU · Normal
Free Chlorine — 24hr trend (mg/L)
Free Cl₂ approaching low threshold — Site A, Zone 3
14 mins ago
Daily compliance report generated — exported to CAFM
2 hrs ago
pH normalised after overnight treatment — all parameters within
range
6 hrs ago
Real-time dashboards
Role-based cloud views with trendlines, threshold alarms, and multi-site visibility. Export data directly to your analytics stack.
Compliance records
Audit-ready trails generated automatically. Exportable logs and API integration with BMS, CAFM, and compliance platforms.
Intelligent alerts
SMS, email, and app notifications with escalation rules and role-based routing. Your team is notified before issues escalate.
Remote configuration
Over-the-air firmware updates and remote sensor configuration. Reduce site visits and keep systems current without disruption.
Engineering credibility
Our engineers design, install and support every monitoring system.
AQUAIOT brings years of engineering experience alongside cutting-edge technology, so your deployment doesn't end at the sensor.
End-to-end delivery
Site survey, installation, commissioning, dashboard setup, training, and post-installation support. We see it through.
Retrofit-friendly
Clamp-on ultrasonic flow meters and non-invasive sensors. No pipework cutting, no service shutdown, no disruption to live systems.
Open & interoperable
RS485/Modbus, APIs, SCADA, AIMS/CAFM integration. Built to connect, not to lock you in to a closed ecosystem.
UK engineering support
Hampshire-based team offering on-site and remote technical support. Real engineers, available when it matters.
Built for operational teams
who need to know.
Water quality monitoring isn't one-size-fits-all. AQUAIOT deploys across the full range of UK water and estates operations.
Water Utilities
Distribution monitoring, treatment compliance, and network resilience
Councils & Local Authorities
Public infrastructure monitoring, drainage, and environmental oversight
NHS & Public-Sector Estates
Legionella compliance, Legionella-risk monitoring, and audit-ready records
Housing Providers
Large-scale Legionella and water quality monitoring across housing stock
Facilities & Asset Managers
Estate-wide visibility with minimal manual intervention
Commercial Estates
Water quality assurance, compliance support, and operational reporting
Water quality enquiry
Tell us about your site.
Share your site and monitoring needs. A UK engineer will follow up to scope the right approach.
Your details go straight to our UK team at info@aquaiot.co.uk.
- Response
- One working day
- Engineering
- Survey, install, dashboards, training
- Phone
- 023 9223 3611
Water quality monitoring questions
Operators ask us these questions about water quality monitoring.
Which water quality parameters can AQUAIOT monitor?
pH, free and total chlorine, conductivity, dissolved oxygen, ORP, turbidity and suspended solids, colour and full-spectrum UV-Vis signatures, using single-parameter sensors or multi-parameter systems such as iSPA-T and iSPS-X.
How does the data reach the dashboard?
Sensors send readings over secure cellular or LoRaWAN telemetry with encrypted payloads. Configuration and firmware updates happen over the air, so nobody has to visit site to change a setting.
Can the system connect to SCADA or our existing platforms?
Yes. It supports RS485/Modbus on site and APIs for SCADA, AIMS/CAFM and analytics platforms.
What happens when a reading goes out of range?
Threshold alarms alert your team in real time, and every reading is stored with trendlines and exports for audits and reports.
Do you install and support the water quality monitoring system?
Yes. We handle the site survey, installation, commissioning, dashboard setup and training, then support the system after it goes live.
What does the Environment Act require for continuous water quality monitoring?
Section 82 of the Environment Act 2021 requires sewerage undertakers in England to monitor water quality continuously upstream and downstream of storm overflows and sewage works. The Environment Agency's provisional guidance names dissolved oxygen, temperature, pH, turbidity and ammonia, sampled at least every 15 minutes at high-risk times, with full rollout by 2035.
Which AQUAIOT sensor measures ammonia?
The iSPS-X multi-parameter instrument measures ammonia nitrogen alongside pH, dissolved oxygen, turbidity and temperature, with up to four sensors fitted at once. The Environment Agency accepts ammonium, combined with temperature and pH, as a proxy for ammonia in the storm overflow programme.
Get in touch
Ready to monitor your
water quality properly?
Speak to an AQUAIOT engineer about your site, monitoring needs, and deployment approach. No commitment required.
Hampshire-based · UK-wide deployment
UK engineering team. Responses within 1 business day.
Your data is handled in accordance with our
Privacy
Policy.
Message received.
Our engineering team will be in touch shortly. In the meantime, download the full datasheet below.
Download DatasheetReady to talk water quality? Speak to the AQUAIOT engineering team.
Smart water quality monitoring
Monitor every parameter that matters, continuously
Real-time chlorine, pH, turbidity, dissolved oxygen, conductivity, ORP and full-spectrum UV-Vis sensing, with threshold alerts and audit-ready records across your sites.
Explore water quality monitoring