Sewage release data goes live

Anglian water today published their new on-line map showing, in near real time, the status of each of their “storm overflow” outlets from the sewage system.

Anglain Water’s sewage map (click to see the live map)

The map links to details of sewage releases from those outlets that are fitted with automatic reporting equipment. Not all outlets have monitors fitted and releases from those outlets remain unrecorded.

The storm overflows along the Gaywood river showing in the map comprise the outlet at the Grimston Sewage treatment works (or as AW prefer to call it “Water Recycling”) and one near where the river goes under Morrisons and the station before emerging into The Walks.

As well as not covering other outlets, discharges from drains, manholes and other parts of the infrastructure including all the discharge points that have been so active this spring in Grimston , Pott Row and Roydon will continue to discharge without any form of measurement and they will be unrecorded unless local people continue to report issues to the Environment Agency.

Anglian Water says that they have made improvements to the way they operate and reduce storm overflows.   “Central to this has been the introduction of Event Duration Monitors (EDMs), which measure how often and for how long storm overflows discharge into the environment. EDMs ensure we have the data and insight needed to address and reduce storm overflows discharging across our network.”

Concern remains that the monitors only report event how long the discharge went on, and not how much sewage was allowed to run into our rivers and sea.

To be fair, this map data is a positive step forward on the road to eliminate sewage spills but it certainly doesn’t’t solve the problem. As ever Anglian Water and all the other water companies talk about their plans rather than their action.


Sewage release data goes live Read More »

Gaywood River sewage dumping data released

Sewage was dumped into the Gaywood River 118 times last year for a total of 288 hours.

According to figures published by The Environment Agency, by far the worst offender on the river was the sewage treatment works at Pott Row Where untreated sewage was deliberately released into the Gaywood River 16 times last year for a reported total of over 180 hours. This is in addition to the treated sewage water which is continuously released into the river all year round.

Treated sewage release at Pott Row

Untreated sewage is also released from. Outfalls at Highgate and from a number of locations around the Millfleet although that data is incomplete since Anglian Water don’t yet monitor sewage releases at all locations.

The data gives a partial picture but the number of releases and the duration of those releases only tell part of the story. Unfortunately, there is no way of knowing the actual volume of untreated sewage released as no data is given about flow rates.

Rivers Trust Map

The Rivers Trust have an interactive map of outfalls at

These are the recorded releases and do not include the accidental spillages such as those that saw raw sewage flowing down Watery Lane at Grimston, directly into the source spring seven times last year due to pump and pipeline failures and during rainfall.


Gaywood River sewage dumping data released Read More »

Scroll to Top