Greece paid €3.5 million over nitrates. The water did not change that day.

On 27 February 2020 the Court of Justice of the European Union ordered Greece to pay a lump sum of €3.5 million. The case, C-298/19, was about nitrates: specifically, about Greece taking too long to do what it had already been ordered to do five years earlier.

The sequence matters more than the number. In April 2015 the Court found that Greece had failed to designate certain areas as vulnerable to agricultural nitrate pollution, and had failed to draw up the action programmes that designation requires — among them the plain of Thessaly and the area of the river Evros, both serious farming regions. Greece then designated twelve new vulnerable zones but did not produce the action programmes for them. In April 2019 the Commission went back to the Court and asked for money.

What it asked for is instructive. The Commission wanted a daily penalty of €23,753.25 for every day of non-compliance, running until Greece complied — the kind of figure designed to make delay more expensive than action. It worked before it was awarded: Greece adopted the necessary interministerial decree that same month, and the Commission dropped the daily penalty and pursued only the lump sum for the years already lost. The Court awarded €3.5 million for the delay itself.

It is easy to read that as a story with an ending. It is not, for a reason that has nothing to do with Greece and everything to do with what the law can reach.

The Nitrates Directive regulates farming practice. It obliges member states to identify the waters at risk, designate the land draining into them, and impose rules on how and when fertiliser and manure may be spread. Those are the right levers — nitrate in drinking water is overwhelmingly agricultural in origin, and nothing downstream fixes a problem that keeps being created upstream.

But groundwater is slow. Nitrate that has already soaked through soil into an aquifer can take years, in some places decades, to work through. A rule adopted in 2019 changes what is applied to a field this season. It does not change what is already in the water beneath it. This is why nitrate concentrations across Europe have proved so stubborn even where the farming rules have genuinely tightened, and why a court judgment and a working tap are separated by a great deal of time.

The practical consequence for anyone responsible for children is simple. A compliance case being closed in Luxembourg tells you that a member state has adopted the required programme. It does not tell you what is in the water at a particular address in an agricultural area this year. Only the analysis for that supply tells you that.

We think both facts deserve saying at once, because they usually are not. Greece was slow, was taken to court twice, and paid. Greek water is also, in the overwhelming majority of places, within the legal limits. Neither of those cancels the other, and a family deciding whether to worry needs both.

Sources: Court of Justice of the European Union, Case C-298/19, judgment of 27 February 2020; European Commission referral of 11 April 2019 (IP/19/1482); Council Directive 91/676/EEC (the Nitrates Directive).