BananaTrifleViolin

That is not correct - the surface drainage system should be regarded as separate from the sewage system, even though both run under the roads. There is the surface water system and the foul water system. It's true that in some places surface drainage may go into the sewage system but that is the exception rather than the rule. Surface drainage is usually designed to move as rapidly as possible into nearby fresh water to prevent flooding.

Surface drainage water is allowed to drain freely into water courses, rivers and lakes, completely untreated. The sewage system is for contaminated water (from toilets and sinks etc) and is designed to go to treatments plants where it SHOULD be treated. It is true that that treatment is not happening, and when there are storms the sewage system can be overrun with water companies currently getting away with dumping contaminated sewage into the rivers which is a scandal.

Yes, it is contaminated water and should not be poured into the surface drainage system. It doesn't connect to the sewers, it is separate and drains freely into rivers, lakes etc.

That is incorrect - there are 2 water drainage systems in the UK. Surface water / rain goes into the surface system and that flows freely into the water table untreated (rivers, lakes etc). It is not designed for dirty water.

The sewage system is totally separate - that is for contaminated water (toilets, sinks) and that goes to sewage treatment plants. It should be treated before it is released into the freshwater system.

So yes, it IS polluting the fresh water by putting things into the rain drainage system.

This story is really poor and badly reported, as it doesn't explain WHY the Environmental Protection Act 1990 has these fines in place and why what this women did was wrong. Instead it's a clickbait story that implies the woman is a victim.

In the UK (and like many places) there are 2 systems of water drainage in urban areas - the surface water drainage (which is for rainwater) and the sewage system (which is dirty and drains toilets, home sinks, etc).

The surface water drainage runs eventually into fresh water such as lakes, rivers, and the sea, untreated. So if you pour coffee down a rain drain, it is contaminating the fresh water. It may seem ridiculous to fine someone for the dregs of one coffee, but if everyone were putting waste water in the rainwater drains / gutters it would have a detrimental impact on the ecosystem. It's already a huge problem as people DO put contaminated water into these drains, probably due to widespread ignorance.

The sewage system is for contaminated waste; that water is collected and treated and either reused for drinking water or then released back into the fresh water system. Finish your coffee OR take it with you to a place where you can dispose of it into the sewage system.

She needs to pay her fine, educate herself and understand she is not a victim here. She did something wrong.