Septic Tank Holding Tank Pump Chamber Treatment Unit Grease Traps | Soil Absorption System | |
Property Line | 10[5] | 10[5] |
Cellar or Crawl Space Wall, Swimming Pool (inground), foundation drain | 10 | 20 |
Slab Foundation | 10 | 10 |
Water Supply Line (pressure) | 10[1] | 10[1] |
Surface Waters (except wetlands) | 25 | 50 |
Bordering Vegetated Wetland (BVW), Salt Marshes, Inland and Coastal Banks | 25 | 50 |
Surface Water Supply - | ||
Reservoirs and Impoundments | 400 | 400 |
Tributaries to Surface | ||
Water Supplies | 200 | 200 |
Wetlands bordering Surface Water Supply | ||
or Tributary thereto | 100 | 100 |
Certified Vernal Pools | 50 | 100[2] |
Private Water Supply Well or Suction Line | 50 | 100 |
Public Water Supply Well | (2) | (2) |
Irrigation Well | 10 | 25 |
Open, Surface or Subsurface Drains which discharge to Surface Water Supplies or tributaries thereto | 50 | 100 |
Other Open, Surface or Subsurface Drains (excluding foundation drains) which intercept seasonal high groundwater table [3] | 25 | 50 |
Other Open, Surface or Subsurface Drains (excluding foundation drains) | 5 | 10 |
Leaching Catch Basins & Dry Wells | 10 | 25 |
Downhill Slope | not applicable | 15[4] |
310 CMR, § 15.211