E03B1/00	7	Methods or layout of installations for water supply (E03B3/00, E03B9/00 take precedence)	E03B1/00	E03B1/00		561
E03B1/02	8	for public or like main supply {for industrial use}	E03B1/02	E03B1/02		1118
E03B1/04	8	for domestic or like local supply	E03B1/04	E03B1/04		1340
E03B1/041	9	{Greywater supply systems}	E03B1/04	E03B1/04		1421
E03B1/042	10	{Details thereof, e.g. valves or pumps}	E03B1/04	E03B1/04		802
E03B1/044	11	{Switch valves in waste pipes}	E03B1/04	E03B1/04		168
E03B2001/045	10	{using household water}	E03B1/04	E03B1/04		1467
E03B2001/047	10	{using rainwater}	E03B1/04	E03B1/04		956
E03B1/048	9	{Systems for collecting not used fresh water}	E03B1/04	E03B1/04		233
E03B3/00	7	Methods or installations for obtaining or collecting drinking water or tap water (treatment of water C02F)	E03B3/00	E03B3/00		320
E03B3/02	8	from rain-water	E03B3/02	E03B3/02		10415
E03B3/03	9	Special vessels for collecting or storing rain-water for use in the household, e.g. water-butts {(containers for storage, in general, B65D)}	E03B3/03	E03B3/03		1399
E03B3/04	8	from surface water {(barrages E02B7/00)}	E03B3/04	E03B3/04		1183
E03B3/06	8	from underground {(consolidating foundation soil by draining, e.g. by lowering the water level E02D3/00; subsoil filtering E21B43/02)}	E03B3/06	E03B3/06		412
E03B3/08	9	Obtaining and confining water by means of wells (applicable to a combination of water and other liquids or to other liquids only E21B43/00)	E03B3/08	E03B3/08		245
E03B3/10	10	by means of pit wells	E03B3/10	E03B3/10		167
E03B3/11	11	in combination with tubes, e.g. perforated, extending horizontally, or upwardly inclined, exterior to the pits	E03B3/11	E03B3/11		268
E03B3/12	10	by means of vertical pipe wells	E03B3/12	E03B3/12		333
E03B3/14	10	by means of horizontal or oblique wells	E03B3/14	E03B3/14		58
E03B3/15	10	Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers (with artificial enrichment E03B3/32{; cleaning, in general B08B})	E03B3/15	E03B3/15		546
E03B3/16	10	Component parts of wells	E03B3/16	E03B3/16		263
E03B3/18	11	Well filters (filters in general B01D24/00&#160;-&#160;B01D35/00)	E03B3/18	E03B3/18		223
E03B3/20	12	of elements of special shape	E03B3/20	E03B3/20		242
E03B3/22	13	Selection of specified materials {(not used, documents in E03B3/20)}	E03B3/22	E03B3/22		6
E03B3/24	12	formed of loose materials, e.g. gravel	E03B3/24	E03B3/24		56
E03B3/26	13	with packed filtering material	E03B3/26	E03B3/26		44
E03B3/28	8	from humid air (condensing of vapours in general B01D5/00; dehumidification of air for air-conditioning F24F3/14)	E03B3/28	E03B3/28		2443
E03B3/30	8	from snow or ice	E03B3/30	E03B3/30		162
E03B3/32	8	with artificial enrichment, e.g. by adding water from a pond or a river {(consolidating foundation soil by draining, e.g. by lowering the water level E02D3/00)}	E03B3/32	E03B3/32		84
E03B3/34	9	of underground water	E03B3/34	E03B3/34		258
E03B3/36	9	of surface water	E03B3/36	E03B3/36		84
E03B3/38	8	Curbs for springs	E03B3/38	E03B3/38		13
E03B3/40	8	Other devices for confining, e.g. trenches, drainage	E03B3/40	E03B3/40		128
E03B5/00	7	Use of pumping plants or installations; Layouts thereof (pumps; pumping plants or installations per seF04)	E03B5/00	E03B5/00		1528
E03B5/02	8	arranged in buildings	E03B5/02	E03B5/02		297
E03B5/025	9	{with surface tanks}	E03B5/02	E03B5/02		132
E03B5/04	8	arranged in wells	E03B5/04	E03B5/04		223
E03B5/045	9	{with surface tanks}	E03B5/04	E03B5/04		41
E03B5/06	9	Special equipment {, e.g. well seals and connections for well casings or the like}	E03B5/06	E03B5/06		216
E03B7/00	7	Water main or service pipe systems (pipes or tubes in general F16L)	E03B7/00	E03B7/00		582
E03B7/003	8	{Arrangement for testing of watertightness of water supply conduits}	E03B7/00	E03B7/00		315
E03B7/006	8	{Arrangements or methods for cleaning or refurbishing water conduits}	E03B7/00	E03B7/00		612
E03B7/02	8	Public or like main pipe systems	E03B7/02	E03B7/02		817
E03B7/04	8	Domestic or like local pipe systems (domestic plumbing E03C1/02)	E03B7/04	E03B7/04		862
E03B7/045	9	{diverting initially cold water in warm water supply}	E03B7/04	E03B7/04		365
E03B7/07	8	Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems	E03B7/07	E03B7/07		2641
E03B7/071	9	{Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off}	E03B7/07	E03B7/07		916
E03B7/072	9	{Arrangement of flowmeters}	E03B7/07	E03B7/07		1316
E03B7/074	9	{Arrangement of water treatment devices}	E03B7/07	E03B7/07		1642
E03B7/075	9	{Arrangement of devices for control of pressure or flow rate}	E03B7/07	E03B7/07		1955
E03B7/077	9	{Arrangement of backflow preventing devices}	E03B7/07	E03B7/07		591
E03B7/078	9	{Combined units with different devices; Arrangement of different devices with respect to each other}	E03B7/07	E03B7/07		1644
E03B7/08	9	Arrangement of draining devices, {e.g. manual shut-off valves}(draining devices in general F16K, F16L)	E03B7/08	E03B7/08		1098
E03B7/09	8	Component parts or accessories (tools for cleaning pipes B08B9/02; devices for preventing contamination of drinking water pipes for domestic use E03C1/10; devices for preventing damage in case of bursts of pipes F16L; heating or cooling of pipes or pipe systems F16L53/00)	E03B7/09	E03B7/09		1193
E03B7/095	9	{Component holders or housings, e.g. boundary boxes}	E03B7/09	E03B7/09		1113
E03B7/10	9	Devices preventing bursting of pipes by freezing (devices preventing bursting of pipes in general F16L55/00)	E03B7/10	E03B7/10		661
E03B7/12	10	by preventing freezing	E03B7/12	E03B7/12		1657
E03B7/14	9	Devices for thawing frozen pipes	E03B7/14	E03B7/14		191
E03B9/00	7	Methods or installations for drawing-off water (domestic water-drawing devices E03C; taps or valves per seF16K)	E03B9/00	E03B9/00		188
E03B9/02	8	Hydrants; Arrangements of valves therein; Keys for hydrants	E03B9/02	E03B9/02		1302
E03B2009/022	9	{Hydrants with a tubular valve seat}	E03B9/02	E03B9/02		71
E03B9/025	9	{Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks}	E03B9/02	E03B9/02		257
E03B9/027	10	{with features preventing frost damage}	E03B9/02	E03B9/02		283
E03B9/04	9	Column hydrants	E03B9/04	E03B9/04		680
E03B9/06	10	Covers	E03B9/06	E03B9/06		303
E03B9/08	9	Underground hydrants	E03B9/08	E03B9/08		650
E03B9/10	10	Protective plates or covers	E03B9/10	E03B9/10		827
E03B9/12	10	Stand-pipes	E03B9/12	E03B9/12		136
E03B9/14	9	Draining devices for hydrants	E03B9/14	E03B9/14		685
E03B9/16	9	Devices for retaining foreign matter, e.g. sand	E03B9/16	E03B9/16		121
E03B9/18	9	Cleaning tools for hydrants	E03B9/18	E03B9/18		52
E03B9/20	9	Pillar fountains or like apparatus for dispensing drinking water	E03B9/20	E03B9/20		1091
E03B11/00	7	Arrangements or adaptations of tanks for water supply (water-butts E03B3/03; storage aspects B65D, B65G, F17B, F17C; foundations E02D27/38; construction or assembling of bulk storage containers employing civil engineering techniques E04H7/00; tower aspects E04H12/00)	E03B11/00	E03B11/00		2538
E03B2011/005	8	{Tanks with two or more separate compartments divided by, e.g. a flexible membrane}	E03B11/00	E03B11/00		263
E03B11/02	8	for domestic or like local water supply	E03B11/02	E03B11/02		1253
E03B11/04	9	without air regulators {, i.e. without air inlet or outlet valves; water tanks provided with flexible walls}	E03B11/04	E03B11/04		154
E03B11/06	9	with air regulators {(air receivers for water conduits F16L55/04; pressure control devices for fluids G05D)}	E03B11/06	E03B11/06		452
E03B11/08	10	Air regulators	E03B11/08	E03B11/08		201
E03B11/10	8	for public or like main water supply	E03B11/10	E03B11/10		1418
E03B11/12	9	of high-level tanks	E03B11/12	E03B11/12		400
E03B11/14	9	of underground tanks	E03B11/14	E03B11/14		476
E03B11/16	9	Adaptations of devices for putting pumping plants in and out of operation, e.g. automatic control devices {(not used, documents in F04)}	E03B11/16	E03B11/16		129
