Erosion Control: Cambridge vs Newton
How do erosion control rules compare between Cambridge, MA and Newton, MA?
Cambridge and Newton have similar restriction levels.
Cambridge, MA
Middlesex County
Cambridge construction sites must install erosion and sediment controls under the Stormwater Ordinance and state Wetlands Protection Act, with silt fencing, inlet protection, and stabilized entrances required.
View full Cambridge rules →Newton, MA
Middlesex County
Newton requires erosion and sediment controls for any land disturbance over 5,000 sq ft or on slopes over 15%. Silt fences, hay bales, and stabilized construction entrances are mandatory.
View full Newton rules →Key Facts Comparison
| Fact | Cambridge | Newton |
|---|---|---|
| Trigger | 1 acre disturbance | - |
| BMPs | Silt fence, inlet protection | - |
| Stabilization | Within 14 days | - |
| Wetlands law | MGL c.131 s.40 | - |
| Non-compliance | Stop-work order | - |
| Area Trigger | - | 5,000 sq ft |
| Slope Trigger | - | Over 15% |
| Temp Seeding | - | 14 days idle |
| Inspection Cycle | - | Weekly |
| Stabilization Goal | - | 70% cover |
Highlighted rows indicate differences between cities.
Cambridge FAQ
What BMPs are required for a Cambridge construction site?
Silt fencing, inlet protection, stabilized entrances, and prompt stabilization of exposed soils at minimum.
Does the Conservation Commission review projects?
Yes, projects within 100 feet of wetlands or 200 feet of the Charles require filing under the Wetlands Protection Act.
Newton FAQ
Do I need silt fence for a home addition?
If your addition disturbs 5,000 sq ft or more of soil, or is on a slope over 15%, yes. Smaller projects may still need inlet protection on downhill catch basins.
What happens if my erosion controls fail?
DPW can issue stop-work orders, require immediate remediation, and fine up to $300 per day per violation. Sediment that enters storm drains triggers additional clean-up costs.
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