Coimbra
Unnamed stream
Very unhealthy
This water is badly degraded. Based on what neighbours noticed — we are fairly sure.
10 reports from 10 people
Includes demonstration reports while the pilot collects real ones.
One Health
Is it safe for people and animals nearby?
In the last 30 days, residents reported sewage smell (100% of 6 reports, 6 people), algae or scum (50% of 6 reports, 3 people), chemical smell or foam (62% of 6 reports, 4 people), dead fish (33% of 6 reports, 2 people), heavy litter (100% of 6 reports, 6 people).
People and children
Avoid contact with the water
Nearby: Park (Parque Geriátrico de Antanhol) 6 m
- Avoid touching the water and wash hands after being near it, especially children.
- Keep children out of the water and away from scum at the edge.
- Avoid skin contact and do not use the water for watering food plants.
- Do not touch dead fish or eat fish caught here until the cause is known.
- Watch for glass or sharp objects on the banks.
Dogs
Avoid contact with the water
Nearby: Park (Parque Geriátrico de Antanhol) 6 m
- Keep dogs from drinking or swimming here.
- Keep dogs out of the water: some algal blooms are toxic to dogs even in small amounts.
- Keep dogs out of the water and rinse them if they go in.
- Keep dogs away from dead fish.
- Watch for sharp litter on the banks.
Fish and wildlife
Take care
The stream itself is their home.
- Sewage lowers oxygen in the water, which fish and insect larvae need.
- Algal growth can strip oxygen from the water at night.
- Chemicals can harm fish, amphibians and the insects birds feed on.
- Dead fish can signal acute pollution or low oxygen — worth reporting to the local environment authority.
- Litter can entangle or be swallowed by birds and other animals.
How we work this out
Concern combines hazard — warning signs in residents' reports from the last 30 days, weighted by each observer's trust and each report's quality — with exposure: playgrounds, schools, parks, bathing and fishing spots and allotments from OpenStreetMap within 150 m. A sign is possible from 20% of reports and likely from 50% reported by at least 2 different people. All of these thresholds are uncalibrated priors.
This is an early prompt to take care, based on what people can see and smell. It is not a medical or public health assessment and not an official bathing-water classification — follow your local health and environment authorities.
How it has changed
What neighbours saw
15 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Green algae or scum, A lot of litter
16 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Dead fish, A lot of litter
19 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Foam on the surface, A lot of litter
21 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Foam on the surface, Green algae or scum, A lot of litter
29 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Foam on the surface, Green algae or scum, A lot of litter
29 days ago · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Foam on the surface, Dead fish, A lot of litter
6 Sept 2026 · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Green algae or scum, A lot of litter
2 Sept 2026 · Anonymous · demo data
- Cloudy
- Barely moving
Sewage or rotten eggs, Dead fish, A lot of litter
Seen from space
Citizen and satellite
No usable satellite pass in the last 30 days — cloud cover or too few water pixels. This is shown as unavailable, never as agreement.
For scientists: the numbers behind this
Indicative status (WFD class names)
Bad100% likely
Posterior mean 0.040 (90% CrI 0.002–0.118)
Data confidence 78%
Citizen and satellite
No usable satellite pass in the last 30 days — cloud cover or too few water pixels. This is shown as unavailable, never as agreement.