Environmental water quality

Water quality starts in the environment, long before it reaches a treatment works or a tap. Discharges, land use and incidents shape what everyone downstream has to deal with, and the expectations attached to them keep rising.

Permits are getting more specific, and more monitored

Most discharges to a watercourse sit under an environmental permit carrying numeric limits, sampling requirements and reporting obligations. The Environment Agency regulates in England, Natural Resources Wales in Wales and SEPA in Scotland, and the direction of travel in all three is tighter limits and more frequent monitoring.

Where you monitor your own discharge, the data generally has to be produced to MCERTS standards. That covers the instrument, the method and the competence of the people operating it, not simply the number that appears at the end.

Storm overflows changed the level of scrutiny

Continuous monitoring upstream and downstream of storm overflows, and the publication of what that monitoring shows, has moved discharge quality from a regulatory matter to a public one. Data that used to be read by a regulator is now read by campaigners, journalists and local residents.

That raises the standard for the data itself. Siting, calibration, instrument drift, validation and how you treat gaps in a record all become arguable points, and in our experience they do get argued. Monitoring that was adequate for an internal report is not always adequate once it is published.

What we monitor and assess

Field monitoring, laboratory analysis and the interpretation that makes either of them useful.

Discharge compliance – Permit parameters, sampling regimes and the reporting that goes with them.

Receiving water – Upstream and downstream assessment of what the discharge actually does.

Pollution incidents – Investigation, source apportionment and evidence that stands up later.

Continuous monitoring – Installation, validation and interpretation of deployed instruments.

Ecological and chemical status – Assessment against Water Framework Directive classifications.

Trend analysis – Long records read as a record, rather than sample by sample.

An incident is an evidence problem before it is anything else

What determines how a pollution incident ends is usually what was collected in the first few hours: samples from the right points, taken in the right order, with the chain of custody intact and a defensible picture of conditions upstream of the suspected source.

That is difficult to arrange at short notice and almost impossible to reconstruct afterwards. Knowing in advance who samples, where, and with what, is the cheapest insurance available to anyone holding a discharge permit.

Sampling and analysis

How we support environmental work

For operators, landowners, consultants and regulators.

Environmental monitoring – Programmes designed around the question you actually need answered.

Discharge and receiving water – Assessment of both sides of the outfall.

Pollution risk and investigation – Before the event, and after it.

Sampling and analysis – UKAS-accredited analysis with field sampling to match.

Data and modelling – Trend analysis, interpretation and predictive work.

Permitting and reporting – Environmental permitting support and regulatory returns.

Evidence from the water, not the assumption.

Talk to us about permit monitoring, receiving water assessment, or an incident investigation.

For any enquiries or questions please call: 01707 527 069