Water
When it rains, some of these products can seep into the soil or wash into waterways.
Using herbicides or other chemicals to “clean” streets and pavements can affect health, water, animals, and biodiversity.
In many places, chemicals are still used to remove plants from streets, pavements, and road edges.
This is often seen as a cleaning practice. But it is not just aesthetic: it has environmental consequences.
It is also a topic that can be raised simply with parish councils and municipalities. Sharing this website or the PDF by email can help start a more informed conversation about alternatives.
When it rains, some of these products can seep into the soil or wash into waterways.
Spontaneous vegetation can support insects and pollinators. When it is systematically removed, public space becomes poorer in biodiversity and also loses some of its ability to help cool the local environment.
Children and animals may touch treated surfaces without knowing they were sprayed.
In practice, it means eliminating plant life with chemicals and leaving residues in public spaces.
Being allowed does not mean it is the best option for frequent use near people, animals, and water.
A street without plants may look cleaner, but it can also mean less biodiversity and more chemical exposure.
Hand weeding, brushes, and other physical methods can control vegetation without spraying chemicals in public space.
Planning maintenance with ecological criteria helps distinguish between areas that need intervention and areas where vegetation can be safely integrated.
Not all spontaneous vegetation is a problem. In many places, a moderate presence can remain compatible with safety, cleanliness, and biodiversity.
More frequent, lighter interventions can avoid harsher treatments and reduce the build-up of vegetation that becomes harder to manage later.
Official documentation and technical sources that help frame the issue: EU rules, the Portuguese regulatory context, environmental monitoring, and practical examples of lower-chemical management.
EU legal text establishing the framework for risk reduction, protection of water, and limits on pesticide use in sensitive areas, including spaces used by the public.
View source: eur-lex.europa.euOfficial Commission overview of the directive, national action plans, risk indicators, and the role of non-chemical and integrated approaches.
View source: food.ec.europa.euPortuguese public-service page describing the authorisation required to apply plant protection products in urban and public-space settings.
View source: gov.ptOfficial clarification aimed at public and private entities, including municipalities and parish councils, on legal duties and prior authorisation.
View source: dgav.ptEuropean monitoring indicator showing pesticide detections above effect or quality thresholds in surface water and groundwater bodies.
View source: eea.europa.euPlain-language summary of EFSA's revised scientific guidance for assessing risk to honey bees, bumble bees, and solitary bees.
View source: efsa.europa.euMunicipal example of phasing out chemical products in parks and public spaces, with a public explanation of the change.
View source: paris.frThis project aims to help local communities question old practices and promote safer alternatives. The website and PDF can be shared with neighbours, parish councils, or municipalities to support a calm and well-informed request.
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