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LakeQuality

Needham Lake

Essex Norfolk and Suffolk, EnglandView mapDirections

EA publishes the water-quality measurements for Needham Lake. Here is what has been measured.

Phosphorus
79 µg/L
Typical for England
Measured by EA
Chlorophyll-a
23 µg/L
More algae than most
Measured by EA
  • Limited data

Needham Lake in Essex Norfolk and Suffolk, England has official water-quality measurements, shown as reported. Phosphorus: 79 µg/L. Chlorophyll-a (algae): 23 µg/L.

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How Needham Lake is classified

Needham Lake in England 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 phosphorus and algae (chlorophyll-a), but not water clarity.

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

Monitoring: the Environment Agency (England).

Needham Lake is a lake in Essex Norfolk and Suffolk County, England.

Source: the Environment Agency (England) — not the EPA Water Quality Portal, last sampled 2026-07-09. 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 Needham Lake is safe to swim in today is a call for the Environment Agency (England) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Needham Lake

These are the measurements EA publishes for Needham Lake. More on the source.

No clarity data. Phosphorus 79 µg/L. Chlorophyll-a 23 µg/L. TSI 64.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)No reading

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus79µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)23µg/LMeasured, 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.64Eutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

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Frequently asked questions about Needham Lake

Where is Needham Lake?

Needham Lake is a lake in Essex Norfolk and Suffolk, England. This page reports official water-quality measurements, shown as reported.

What is the water quality of Needham Lake?

Needham Lake in Essex Norfolk and Suffolk, England has official water-quality measurements, shown as reported. Phosphorus: 79 µg/L. Chlorophyll-a (algae): 23 µg/L.

Measurements on this page ↑

Is Needham Lake safe to swim in?

Needham Lake 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.

Swimming on this page ↑

Where this data comes from

7 measurements from 1 monitoring station, 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-wqa7 samples · 2026
Monitoring station identifiers (1)
  • AN-LSN0410

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