WD3 9

2,547 people · median £430,000 · Three Rivers

Three Rivers Council · Liberal Democrat minority — no overall control 18/39 seats · 46% · OCD 2026

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Environment This postcode sector

NO₂

12.6

— WHO guide

PM2.5

7.6

— WHO guide

µg/m³ annual mean · DEFRA

Surface water 1-in-1002.7%

Flood zone12.3% of postcodes

Radonup to 1–3% of homes

Historic landfill33 sites within ~1 km

EA · UKHSA/BGS · Mining Remediation Authority — indicative, not a property search

Road & rail noise bands (≥55 / ≥65 dB Lden) are being added — not yet available for this area. They cover major sources only; "not mapped" ≠ "quiet".

Defra strategic noise mapping

Listed buildings9

Conservation areas0

Green belt85.9%

Green spaces194

Historic England · OS Open Greenspace

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