Pahajärvi
Orimattila, FinlandView mapDirections
Syke publishes the water-quality measurements for Pahajärvi. Here is what has been measured.
- Limited data
Pahajärvi in Orimattila, Finland has official water-quality measurements, shown as reported. Phosphorus: 15 µg/L. Chlorophyll-a (algae): 4.7 µg/L.
How Pahajärvi is classified
Pahajärvi in Finland is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Finnish Environment Institute (Syke) and the ELY Centres.
Pahajärvi is a lake in Orimattila County, Finland.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-06-24. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Pahajärvi is safe to swim in today is a call for the Finnish Environment Institute (Syke) and the ELY Centres and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Pahajärvi
These are the measurements Syke publishes for Pahajärvi. More on the source.
No clarity data. Phosphorus 15 µg/L. Chlorophyll-a 4.7 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 15µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4.7µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Frequently asked questions about Pahajärvi
Where is Pahajärvi?
- Pahajärvi is a lake in Orimattila, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Pahajärvi?
- Pahajärvi in Orimattila, Finland has official water-quality measurements, shown as reported. Phosphorus: 15 µg/L. Chlorophyll-a (algae): 4.7 µg/L.
Is Pahajärvi safe to swim in?
- Pahajärvi has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
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Where this data comes from
2 measurements from 1 monitoring station, 2026. Retrieved from Syke VESLA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Finnish Environment Institute (Syke) and ELY Centres
syke-vesla2 samples · 2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
98714
Authority classifications are shown as the authority published them. See where the data comes from and data sources.