Where is Ostra Ringsjon?

Ostra Ringsjon is a lake in Sweden. This page reports official water-quality measurements, shown as reported.

Is Ostra Ringsjon safe to swim in?

Ostra Ringsjon 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.

Ostra Ringsjon

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HaV publishes the water-quality measurements for Ostra Ringsjon. Here is what has been measured.

Clarity

2.2 m

Typical for Sweden

Secchi · sampled 2022

Phosphorus

36 µg/L

More phosphorus than most

Measured by HaV

Chlorophyll-a

12 µg/L

More algae than most

Measured by HaV

Limited data

See the measurements Directions Where to stay

Ostra Ringsjon in Sweden has official water-quality measurements, shown as reported. Water clarity: 2.2 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 12 µg/L.

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How Ostra Ringsjon is classified

Ostra Ringsjon in Sweden 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 Swedish Agency for Marine and Water Management, via UNEP GEMS/Water.

Ostra Ringsjon is a lake in Unknown County, Sweden.

Source: the Swedish Agency for Marine and Water Management, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2022-12-21. 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 Ostra Ringsjon is safe to swim in today is a call for the Swedish Agency for Marine and Water Management, 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 Ostra Ringsjon

These are the measurements HaV publishes for Ostra Ringsjon. More on the source.

Moderate clarity, visible to about 7.2 ft. Phosphorus 36 µg/L. Chlorophyll-a 12 µg/L. TSI 53.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.2m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	36µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	12µg/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.	53	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Ostra Ringsjon

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

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Stays near Ostra Ringsjon

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Fishing Ostra Ringsjon

→ Ostra Ringsjon fishing regulations (limits, seasons, special rules)

Frequently asked questions about Ostra Ringsjon

Where is Ostra Ringsjon?: Ostra Ringsjon is a lake in Sweden. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ostra Ringsjon?: Ostra Ringsjon in Sweden has official water-quality measurements, shown as reported. Water clarity: 2.2 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 12 µg/L.
Is Ostra Ringsjon safe to swim in?: Ostra Ringsjon 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

250 measurements from 1 monitoring station, 2016–2022. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

European Environment Agencyeuropeanenvironmentagenc250 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

SWE00079

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