Where is Pernisko Jezero?

Pernisko Jezero is a lake in Slovenia. This page reports official water-quality measurements, shown as reported.

Is Pernisko Jezero safe to swim in?

Pernisko Jezero 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.

Pernisko Jezero

SloveniaView map Directions

ARSO publishes the water-quality measurements for Pernisko Jezero. Here is what has been measured.

Clarity

0.3 m

Secchi · sampled 2023

Phosphorus

193.5 µg/L

Measured by ARSO

Limited data

See the measurements Directions Where to stay

Pernisko Jezero in Slovenia has official water-quality measurements, shown as reported. Water clarity: 0.3 m visibility. Phosphorus: 193.5 µg/L.

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How Pernisko Jezero is classified

Pernisko Jezero in Slovenia 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 water clarity and phosphorus, but not algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.

Monitoring: the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water.

Pernisko Jezero is a lake in Unknown County, Slovenia.

Source: the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2023-11-02. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Pernisko Jezero is safe to swim in today is a call for the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Pernisko Jezero

These are the measurements ARSO publishes for Pernisko Jezero. More on the source.

Very murky, less than 1 ft of visibility. Phosphorus 193.5 µg/L. TSI 79.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.3m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	194µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)		No reading 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.	79	Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about Pernisko Jezero

Answers come straight from the public measurements and survey records on this page.

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Fishing Pernisko Jezero

→ Pernisko Jezero fishing regulations (limits, seasons, special rules)

Frequently asked questions about Pernisko Jezero

Where is Pernisko Jezero?: Pernisko Jezero is a lake in Slovenia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Pernisko Jezero?: Pernisko Jezero in Slovenia has official water-quality measurements, shown as reported. Water clarity: 0.3 m visibility. Phosphorus: 193.5 µg/L.
Is Pernisko Jezero safe to swim in?: Pernisko Jezero 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

16 measurements from 1 monitoring station, 2021–2023. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

European Environment Agencyeuropeanenvironmentagenc16 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

SVN00009

Authority classifications are shown as the authority published them. See where the data comes from and data sources.