Where is Jasień Pn.?

Jasień Pn. is a lake in LW21009, Poland. This page reports official water-quality measurements, shown as reported.

Is Jasień Pn. safe to swim in?

Jasień Pn. 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.

Jasień Pn.

LW21009, PolandView map Directions

GIOŚ publishes the water-quality measurements for Jasień Pn.. Here is what has been measured.

Clarity

3 m

Clearer than most

Secchi · sampled 2026

Phosphorus

51 µg/L

Typical for Poland

Measured by GIOŚ

Chlorophyll-a

7.1 µg/L

Less algae than most

Measured by GIOŚ

Limited data

See the measurements Directions Where to stay

Jasień Pn. in LW21009, Poland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 51 µg/L. Chlorophyll-a (algae): 7.1 µg/L.

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How Jasień Pn. is classified

Jasień Pn. in Poland 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, phosphorus and algae (chlorophyll-a).

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

Monitoring: the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska).

Jasień Pn. is a lake in LW21009 County, Poland.

Source: the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska) — not the EPA Water Quality Portal, last sampled 2026-06-02. Methodology: how these readings are compared.

What Jasień Pn. is good for

From access and monitoring records, not editorial picks.

Clear water9.8 ft of visibility

Swimming conditions

No reading

Limited data

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

Whether Jasień Pn. is safe to swim in today is a call for the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Jasień Pn.

These are the measurements GIOŚ publishes for Jasień Pn.. More on the source.

Moderate clarity, visible to about 9.8 ft. Phosphorus 51 µg/L. Chlorophyll-a 7.1 µg/L. TSI 52.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	51µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	7.1µg/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.	52	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Jasień Pn.

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

Stays via Stay22

Stays near Jasień Pn.

Compare lakeside cabins, hotels, and vacation rentals near Jasień Pn. in LW21009, Poland — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Jasień Pn.

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Fishing Jasień Pn.

→ Jasień Pn. fishing regulations (limits, seasons, special rules)

Frequently asked questions about Jasień Pn.

Where is Jasień Pn.?: Jasień Pn. is a lake in LW21009, Poland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Jasień Pn.?: Jasień Pn. in LW21009, Poland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 51 µg/L. Chlorophyll-a (algae): 7.1 µg/L.
Is Jasień Pn. safe to swim in?: Jasień Pn. 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.

Explore Jasień Pn. across LakeQuality

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EU bathing ratings and named-lake measurements

Where this data comes from

43 measurements from 1 monitoring station, 2024–2026. Retrieved from GIOŚ lake monitoring (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Główny Inspektorat Ochrony Środowiskagios-pjwp43 samples · —

Analytical methods

GIOŚ PJWP lake monitoring

Monitoring station identifiers (1)

PL01S0202_0061

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