Landfill Check

Historic landfill sites in Radlett, Hertfordshire

The Environment Agency records 42 historic landfill sites in and around Radlett, Hertfordshire. covering roughly 329 hectares in total. The largest is Riverside Farm at 34.52 ha. Recorded waste ranges up to special (hazardous) waste. Data: October 2025 revision.

Recorded landfill boundaries around Radlett (indicative, digitised at 1:10,000).

All recorded sites, largest first

SiteAreaLast inputWaste types
Riverside Farm34.52 ha1989Inert
Moor Mill28.91 ha1976Liquid / sludgeIndustrialHouseholdCommercial
Old Parkbury21.85 ha1983HouseholdCommercialInert
Bell Lane19.86 ha—HouseholdInert
Bell Lane19.77 ha—HouseholdCommercialInert
Old Gravel Pit12.88 ha1985Inert
Smug Oak Lane12.85 ha1976IndustrialHouseholdCommercial
Moor Mill12.21 ha1978IndustrialHouseholdCommercial
Lafarge Harper Lane, Radlett11.85 ha—Waste types not recorded
Harper Lane Quarry11.26 ha1991Inert
Bell Lane11.03 ha1980HouseholdCommercialInert
Harper Lane Quarry10.59 ha1986IndustrialInert
Harper Lane Quarry9.8 ha1989IndustrialInert
Harper Lane Quarry9.38 ha1989IndustrialCommercialInert
Smug Oak Lane9.37 ha1968IndustrialHouseholdCommercial
Bell Lane9.02 ha—HouseholdCommercialInert
Harper Lane Quarry8.91 ha1990IndustrialCommercial
Napsbury8.04 ha1981HouseholdCommercialInert
Moor Mill6.9 ha—Waste types not recorded
Smug Oak Lane6.6 ha—Waste types not recorded
Harper Lane Quarry5.76 ha1989IndustrialCommercialInert
Broad Colney Gravel Pits No.45.08 ha—HouseholdCommercialInert
Bell Lane5.08 ha—Inert
Bell Lane4.91 ha—Waste types not recorded
Warrenfields4.47 ha1984Inert
Harper Lane Quarry4.19 ha1986IndustrialInert
Broad Colney Gravel Pits No.33.55 ha—HouseholdCommercialInert
Harper Lane Quarry3.23 ha1989IndustrialInert
Smug Oak Lane2.75 ha1976IndustrialHouseholdCommercial
Broad Colney Gravel Pits No.12.42 ha—HouseholdCommercialInert
Mill Moor2.26 ha1986Inert
Harper Lane Quarry2.17 ha1989IndustrialInert
Harper Lane Quarry1.6 ha1989IndustrialCommercialInert
Broad Colney Gravel Pits No.21.45 ha—HouseholdCommercialInert
Moor Mill1.42 ha1986Inert
Blackbirds Farm0.57 ha1987Inert
Pages Farm0.55 ha1982Inert
Scrubbits Square0.4 ha1976Inert
Model Farm0.32 ha1991Inert
Model Farm0.3 ha1991Inert
Hill Farm0.27 ha1985Inert
Shenley Hospital0.15 ha—Special

What this data does — and doesn't — cover

  • Licensed-era records only. Waste licensing began in 1974. Older tips — especially small pre-war ones — are incompletely recorded, so absence from this data does not mean no landfill ever existed here.
  • Not the contaminated-land register. Councils hold a separate register of land determined as contaminated. A historic landfill entry is not a contamination determination, and vice versa.
  • Boundaries are indicative. Digitised at 1:10,000 scale; some are buffers around a point rather than surveyed edges.
  • Not a substitute for a formal environmental search. If you're buying, your conveyancer's environmental search checks this and several other sources.

EA Historic Landfill dataset, October 2025 revision. More on the methodology page.

Common questions

How many former landfill sites are there in Radlett?
42 historic (closed) landfill sites are recorded within about 15km of Radlett town centre in the Environment Agency's Historic Landfill dataset (October 2025 revision). Pre-1974 sites are incompletely recorded, so the true historical number is likely higher.
How do I check a specific address in Radlett?
Search the postcode on Landfill Check — you'll see every recorded site within 1km, with distance, direction and waste types, measured to the site boundary.

Nearby areas

Worth reading: buying a house near a former landfill and what the waste types mean.