New York Codes, Rules and Regulations › Title 10 - DEPARTMENT OF HEALTH › Chapter - APPENDICES › Appendix 5-B › Table 1 - Required Minimum Separation Distances to Protect Water Wells From Contamination

Current through Register Vol. 46, No. 28, July 10, 2024
Contaminant
								Source
Distance (Feet)
								1
Chemical storage sites not protected from the
								elements (e.g., salt and sand/salt storage)
								2
300
Landfill waste disposal area, or hazardous or
								radiological waste disposal area 2
300
Land surface application or subsurface injection of
								effluent or digested sludge from a municipal or public wastewater treatment
								facility
200
Land surface application or subsurface injection of
								septage waste
200
Land surface spreading or subsurface injection of
								liquid or solid manure 3
200
Storage areas for manure piles
								4
200
Barnyard, silo, barn gutters and animal pens
								5,6
100
Cesspools (i.e. pits with no septic tank
								pretreatment)
200
Wastewater treatment absorption systems located in
								coarse gravel or in the direct path of drainage to a well
200
Fertilizer and/or pesticide mixing and/or clean up
								areas
150
Seepage pit (following septic tank)
								5
150
Underground single walled chemical or petroleum
								storage vessels
150
Absorption field or bed
								5
100
Contained chemical storage sites protected from the
								elements (e.g., salt and sand/salt storage within covered structures)
								7
100
Septic system components (non-watertight)
								5
100
Intermittent sand filter without a watertight liner
								5
100
Sanitary privy pit
								5
100
Surface wastewater recharge absorption system
								constructed to discharge storm water from parking lots, roadways or driveways
								5
100
Cemeteries
100
Sanitary privy with a watertight vault
50
Septic tank, aerobic unit, watertight effluent line
								to distribution box
50
Sanitary sewer or combined sewer
50
Surface water recharge absorption system with no
								automotive-related wastes (e.g., clear-water basin, clear-water dry
								well)
50
Stream, lake, watercourse, drainage ditch, or
								wetland
25
All known sources of contamination otherwise not
								shown above
100
Notes for Table 1:
1 The listed water well separation
				  distances from contaminant sources shall be increased by 50% whenever aquifer
				  water enters the water well at less than 50 feet below grade. If a 50% increase
				  in separation distances can not be achieved, then the greatest possible
				  increase in separation distance shall be provided with such additional measures
				  as needed to prevent contamination. See also Note 6 to Table 2.
2 Water wells shall not be located
				  in a direct line of flow from these items, nor in any contaminant plume created
				  by these items, except with such additional measures (e.g., sentinel
				  groundwater monitoring, hydraulic containment, source water treatment) as
				  needed to prevent contamination.
3 Based upon on-site evaluations
				  of agricultural properties done per agricultural environmental management (AEM)
				  or comprehensive nutrient management plan (CNMP) programs by a certified
				  nutrient management planner or soil and water conservation district (SWCD)
				  official, water wells may be located a minimum of 100 feet from areas subject
				  to land spreading of manure.
4 Water wells may be located 100
				  feet from temporary (30 days or less) manure piles/staging areas that are
				  controlled to preclude contamination of surface or groundwater or 100 feet from
				  otherwise managed manure piles that are controlled pursuant to regulation in a
				  manner that prevents contamination of surface or groundwater.
5 When these contamination sources
				  are located in coarse gravel or are located upgrade and in the direct path of
				  drainage to a water well, the water well shall be located at least 200 feet
				  away from the closest part of these sources.
6 Animal pen does not include
				  small pet shelters or kennels housing 3 or fewer adult pets.
7 Chemical storage sites as used
				  in this entry do not include properly maintained storage areas of chemicals
				  used for water treatment nor areas of household quantities of commonly used
				  domestic chemicals.