Peipsi Järv
Peipsi Järv in Ida-Viru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.2 m visibility. Phosphorus: 46 µg/L. Chlorophyll-a (algae): 19.9 µg/L. Maximum depth: 50.2 ft. Surface area: 875594.3 acres.
- Clarity
- 1.2 m
- Max depth
- 15.3 m
- Area
- 3,543 km²
Why Peipsi Järv has no A–F grade
Peipsi Järv in Estonia is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Estonian Environment Agency (Keskkonnaagentuur).
Peipsi Järv is a 875,594-acre lake in Ida-Viru County, Estonia with a maximum depth of 50 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-10-15. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Peipsi Järv
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 3.9 ft. Phosphorus level: 46 µg/L. Chlorophyll-a: 19.9 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 m | Not graded |
| Phosphorus | 46 µg/L | Not graded |
| Chlorophyll-a (Algae) | 19.9 µg/L | Not graded |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 15.3 m |
| Surface Area | 3,543 km² |
Where to stay near Peipsi Järv
Compare lakeside cabins, hotels, and vacation rentals near Peipsi Järv in Ida-Viru, Estonia — 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.
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Fishing Peipsi Järv
Frequently asked questions about Peipsi Järv
What is the water quality of Peipsi Järv?
- Peipsi Järv in Ida-Viru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.2 m visibility. Phosphorus: 46 µg/L. Chlorophyll-a (algae): 19.9 µg/L. Maximum depth: 50.2 ft. Surface area: 875594.3 acres.
Is Peipsi Järv safe to swim in?
- Peipsi 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 Peipsi Järv?
- Peipsi Järv has a maximum depth of 50.2 feet. The lake covers 875594.3 acres.
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Where this data comes from
2,501 measurements from 31 monitoring stations, 2016–2025. 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-ee2,501 samples · 2016–2025
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (31)
SJA1143000SJA5720000SJA1802000SJA8471000SJA1167000SJA7235000SJA1399000SJA0039000SJA0411000SJB0880000SJA0931000SJA5114000SJA8959000SJA6581000SJA9531000SJA7650000SJA1588000SJA0199000SJA0478000SJA3087000SJA4879000SJA9063000SJA2109000SJA0160000SJA4498000- +6 more
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2025-10-15
Monitoring stations: 31