Where is Rummu Järv?

Rummu Järv is a lake in Harju, Estonia. This page reports official water-quality measurements, shown as reported.

Is Rummu Järv safe to swim in?

Rummu Järv 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.

How deep is Rummu Järv?

Rummu Järv has a maximum depth of 45.6 feet. The lake covers 216.7 acres.

Rummu Järv

Harju, Estonia88 haView map Directions

KAUR publishes the water-quality measurements for Rummu Järv. Here is what has been measured.

Clarity

8.8 m

Clearer than most

Secchi · sampled 2024

Phosphorus

11 µg/L

Less phosphorus than most

Measured by KAUR

Chlorophyll-a

1 µg/L

Less algae than most

Measured by KAUR

Max depth

13.9 m

Bathymetric survey

Area

88 ha

Surface area

46 ft max depth
Limited data

See the measurements Directions Where to stay

Rummu Järv in Harju, Estonia has official water-quality measurements, shown as reported. Water clarity: 8.8 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 1 µg/L. Maximum depth: 45.6 ft. Surface area: 216.7 acres.

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How Rummu Järv is classified

Rummu Järv in Estonia 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 Estonian Environment Agency (Keskkonnaagentuur).

Rummu Järv is a 217-acre lake in Harju County, Estonia with a maximum depth of 46 feet.

Source: the Estonian Environment Agency (Keskkonnaagentuur) — not the EPA Water Quality Portal, last sampled 2024-09-18. Methodology: how these readings are compared.

What Rummu Järv is good for

From access and monitoring records, not editorial picks.

Clear water28.7 ft of visibility
Deep water45.6 ft surveyed max depth

Swimming conditions

No reading

Limited data

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

Whether Rummu Järv is safe to swim in today is a call for the Estonian Environment Agency (Keskkonnaagentuur) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Rummu Järv

These are the measurements KAUR publishes for Rummu Järv. More on the source.

Crystal clear, you can see 28.7 ft down. Phosphorus 11 µg/L. Chlorophyll-a 1 µg/L. TSI 33.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	8.75m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	11µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	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.	33	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Rummu Järv

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

Lake Details

Max depth

13.9 m

Surface area

88 ha

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Stays near Rummu Järv

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Fishing Rummu Järv

→ Rummu Järv fishing regulations (limits, seasons, special rules)

Frequently asked questions about Rummu Järv

Where is Rummu Järv?: Rummu Järv is a lake in Harju, Estonia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Rummu Järv?: Rummu Järv in Harju, Estonia has official water-quality measurements, shown as reported. Water clarity: 8.8 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 1 µg/L. Maximum depth: 45.6 ft. Surface area: 216.7 acres.
Is Rummu Järv safe to swim in?: Rummu Järv 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.
How deep is Rummu Järv?: Rummu Järv has a maximum depth of 45.6 feet. The lake covers 216.7 acres.

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Where this data comes from

12 measurements from 1 monitoring station, 2024. Retrieved from KESE / Estonian Environment Agency (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Estonian Environment Agency (Keskkonnaagentuur)kese-ee12 samples · 2024

Analytical methods

KESE I-level monitoring

Monitoring station identifiers (1)

SJA2964000

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