Bar Mere
Gtr Mancs Mersey and Ches, EnglandView mapDirections
EA publishes the water-quality measurements for Bar Mere. Here is what has been measured.
- Limited data
Bar Mere in Gtr Mancs Mersey and Ches, England has official water-quality measurements, shown as reported. Phosphorus: 150 µg/L. Chlorophyll-a (algae): 14.6 µg/L.
How Bar Mere is classified
Bar Mere 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).
Bar Mere is a lake in Gtr Mancs Mersey and Ches County, England.
Source: the Environment Agency (England) — not the EPA Water Quality Portal, last sampled 2023-03-02. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Bar Mere 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.
Water quality measurements for Bar Mere
These are the measurements EA publishes for Bar Mere. More on the source.
No clarity data. Phosphorus 150 µg/L. Chlorophyll-a 14.6 µg/L. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 150µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 14.6µg/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. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about Bar Mere
Where is Bar Mere?
- Bar Mere is a lake in Gtr Mancs Mersey and Ches, England. This page reports official water-quality measurements, shown as reported.
What is the water quality of Bar Mere?
- Bar Mere in Gtr Mancs Mersey and Ches, England has official water-quality measurements, shown as reported. Phosphorus: 150 µg/L. Chlorophyll-a (algae): 14.6 µg/L.
Is Bar Mere safe to swim in?
- Bar Mere 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
73 measurements from 1 monitoring station, 2016–2023. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa73 samples · 2016–2023
Monitoring station identifiers (1)
NW-88020443
Authority classifications are shown as the authority published them. See where the data comes from and data sources.