Orton Water
Orton Water in Lincs and Northants, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 74 µg/L. Chlorophyll-a (algae): 9.6 µg/L.
Why Orton Water has no A–F grade
Orton Water in England 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 phosphorus and algae (chlorophyll-a), but not water clarity.
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 Environment Agency (England).
Orton Water is a lake in Lincs and Northants County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-07-08. 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 Orton Water
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 74 µg/L. Chlorophyll-a: 9.6 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 74 µg/L | Not graded |
| Chlorophyll-a (Algae) | 9.6 µg/L | Not graded |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Orton Water
Compare lakeside cabins, hotels, and vacation rentals near Orton Water in Lincs and Northants, England — 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 Orton Water
Frequently asked questions about Orton Water
What is the water quality of Orton Water?
- Orton Water in Lincs and Northants, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 74 µg/L. Chlorophyll-a (algae): 9.6 µg/L.
Is Orton Water safe to swim in?
- Orton Water 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 Orton Water across LakeGrade
More lakes in England
Where this data comes from
53 measurements from 1 monitoring station, 2024–2026. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa53 samples · 2024–2026
Monitoring station identifiers (1)
AN-LSN0006
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: 2026-07-08
Monitoring stations: 1