Official records compared

Permitted overflows not found on the hub

The Environment Agency's public register lists every permit held by a water company to discharge storm sewage in England. The National Storm Overflow Hub lists the overflows the companies report on. We compare the two.

Active storm sewage permits

10,935

No hub overflow within 500 m

1,297

11.9%

What this does and does not show

The data shows a permitted storm sewage discharge point on the EA register with no overflow published on the hub within 500 m. It does not show that an overflow is unmonitored or that anything is wrong. Common reasons for a gap:

the permit's grid reference is approximate or marks the works, not the outfall;
one permit covers an overflow the hub lists under a different location;
the overflow is not published on the hub.

35 active permits have no usable grid reference on the register and are left out. Each row links to the EA register so it can be checked. England only: Welsh permits are held by Natural Resources Wales. Company names are as recorded on the register. Register last read 2026-09-20.

By company

Permit holder	Permits	Within 100 m	100 to 500 m	Over 500 m
Severn Trent Water Limited	1,989	977	626	386
Wessex Water Services Limited	874	442	262	170
Northumbrian Water Limited	1,330	817	373	140
United Utilities Water Limited	2,083	1,834	119	130
Yorkshire Water Services Limited	1,697	1,367	215	115
Southern Water Services Limited	708	470	124	114
Anglian Water Services Limited	995	683	208	104
South West Water Limited	904	544	265	95
Thames Water Utilities Limited	254	170	56	28
Dŵr Cymru Cyfyngedig	95	61	22	12
Ancala Water Services (Estates) Limited	3	0	1	2
Yorkshire Water Services Limited\|Northumbrian Water Limited	1	0	0	1
Severn Trent Water Limited\|Environmental Permits Severn Trent Water	1	1	0	0
Severn Trent Water Limited\|Yorkshire Water Services Limited	1	0	1	0

Yorkshire Water Services Limited: 115 permits with no hub overflow within 500 m

Site (register name)	Area	Grid ref	Nearest hub overflow	Permit
ASHLEY PARK SSO	North Yorkshire	SE6355041950	6.6 km	NE/WADC16/001
BROADWAY 374 CSO	Doncaster	SE6500008231	3.8 km	NE/EPRRB3797AG/001
TUNSTALL SEWAGE PUMPING STATION	North Yorkshire	SE2700096100	3.5 km	NE/WADC438/002
BROADWAY 248 CSO	Doncaster	SE6496908772	3.3 km	NE/EPRRB3796WL/001
NEWPORT EMERGENCY OVERFLOWS	East Riding of Yorkshire	SE8648030790	3.1 km	NE/H168/001
BROADWAY 166 CSO	Doncaster	SE6498209160	2.9 km	NE/EPRRB3796VS/001
LECONFIELD SEWAGE	East Riding of Yorkshire	TA0150043750	2.7 km	NE/WRA6607/002
BROADWAY 134 CSO	Doncaster	SE6498709320	2.7 km	NE/EPRRB3796RJ/001
SOUTH DUFFIELD VILLAGE DRAIN	North Yorkshire	SE6800033700	2.7 km	NE/S/RD/141/001
FANGFOSS SEWAGE PUMPING STATION	York	SE7430054800	2.7 km	NE/WADC162/002
BEECHFIELD ROAD CSO	Doncaster	SE6499209471	2.6 km	NE/EPRRB3796NA/001
MIDDLETON GROVE CSO	Leeds	SE2982730473	2.5 km	NE/EPRSB3499RQ/001
BARMBY ON THE MARSH STW	East Riding of Yorkshire	SE6851028290	2.4 km	NE/QC.27/24/0009/001
FEARBY STW	North Yorkshire	SE1950081100	2.3 km	NE/S/RD/260/001
SCHOLES LANE - SCHOLES	Kirklees	SE1668425665	2.3 km	NE/YWUCD2/23/001
BROADWAY 62 CSO	Doncaster	SE6500109790	2.3 km	NE/EPRRB3796ET/001
BROADWAY 35 CSO	Doncaster	SE6500809985	2.1 km	NE/EPRRB3796AU/001
BROADWAY STATION ROAD CSO	Doncaster	SE6558210405	1.8 km	NE/EPREP3225GG/002
SLEIGHTS SPS	North Yorkshire	NZ5750008300	1.8 km	NE/WADC385/002
LEA ROAD	North Yorkshire	SE3537078360	1.7 km	NE/1828/001
REIGHTON SANDS HOLIDAY PARK	North Yorkshire	TA1417076060	1.6 km	NE/27/27/0099/001
FITZHUBERT ROAD	Sheffield	SK3843885427	1.5 km	NE/EPRRB3454TH/001
QUEEN MARY ROAD CSO	Sheffield	SK3855585461	1.5 km	NE/EPRRB3452TX/001
CHESTNUT AVENUE SPS	East Riding of Yorkshire	TA1800126301	1.5 km	NE/WADC212/002
HESSAY MAIN STREET CSO	North Yorkshire	SE5200053000	1.5 km	NE/WADC1519/003
HUNTER HOUSE FARM	Kirklees	SE1221610528	1.5 km	NE/2478/001
HELLIWELL SYKE CSO	Calderdale	SE2359026060	1.5 km	NE/WRA8430/001
WALTON LANE CSO	Wakefield	SE4348041830	1.5 km	NE/C4897/001
GREAT NORTH ROAD ADWICK CSO	Doncaster	SE5317208280	1.5 km	NE/EPRUP3223KQ/002
WESTLAND ROAD CSO	Leeds	SE2952830163	1.4 km	NE/EPRSB3499DT/001
HASTILAR ROAD CSO	Sheffield	SK3874485614	1.4 km	NE/EPRRB3352TM/001
TADCASTER ROAD CSO & BISHOPTHORPE	York	SE5913048610	1.4 km	NE/27/24/0245/001
FOSTON SEWAGE PUMPING STATION	York	SE6980063900	1.4 km	NE/WADC176/002
SPRINGFIELD AVENUE 2 CSO	East Riding of Yorkshire	TA1819066800	1.2 km	NE/WRA7343/005
OLD RUN ROAD CSO	Leeds	SE3068430710	1.2 km	NE/EPRZB3593EG/001
BESSINGBY ROAD CSO	East Riding of Yorkshire	TA1812066790	1.2 km	NE/WRA7345/004
HARBOROUGH AVENUE CSO	Sheffield	SK3873085871	1.2 km	NE/EPRRB3254TX/001
HILDERTHORPE ROAD CSO	East Riding of Yorkshire	TA1776366723	1.1 km	NE/EPRBB3194WR/002
THE WELLINGTON CSO	Leeds	SE3140331628	1.1 km	NE/EPRSB3499WM/001
SWINNOW VIEW CSO	Leeds	SE2342734390	1.1 km	NE/2467/002
BILTON PUMPING STATIONS	East Riding of Yorkshire	TA1633032870	1.1 km	NE/H23/002
CLOVERLEY CLOSE SPS	York	SE7095045820	1.1 km	NE/WADC95/002
ELLAND LOWFIELDS SPS	Calderdale	SE1200021000	1.1 km	NE/3111/003
THE GROVE CSO	Doncaster	SE5975205100	1.1 km	NE/WADC1424/003
FIELD 7500 CSO	York	SE4400057000	1.1 km	NE/WADC921/003
HARLINGTON ROAD CSO	Doncaster	SE4792300564	1.0 km	NE/EPRCB3598AN/001
LEVEN PUMPING STATIONS	East Riding of Yorkshire	TA1142045400	1.0 km	NE/H140/001
STATION ROAD NO. 1 CSO	Bradford	SE1748043996	1.0 km	NE/EPRZB3391EQ/001
SHAW LANE SSO	Leeds	SE2038041960	1.0 km	NE/WADC611/001
NETTLETON HILL CSO	Kirklees	SE0942016640	1.0 km	NE/WRA8609/002
ECCUP RESERVOIR WORKS	Leeds	SE3090041800	1.0 km	NE/S/CB/97/001
HEBBLE BROOK CSO	Calderdale	SE0645029000	1.0 km	NE/555/003
RAVENCARR ROAD CSO	Sheffield	SK3874586102	1.0 km	NE/EPRRB3791NK/001
SWINTON KILNHURST-WENTWORTH SPS	Rotherham	SK4575097190	1.0 km	NE/WRA7668/001
HAMBLETON ROAD CSO	North Yorkshire	SE3127056320	0.9 km	NE/QC.27/21/0050/002
EASTMOOR CSO	Wakefield	SE3510021300	0.9 km	NE/WADC1082/003
BOUNDARY AVENUE CSO	Doncaster	SE6015905340	0.9 km	NE/EPRHB3892EW/001
GROSVENOR TERRACE SSO	York	SE5997052840	0.9 km	NE/WADC976/001
5 CSO AT BORRAGE BRIDGE	North Yorkshire	SE3010071100	0.9 km	NE/2749/002
COMPTON PLACE CSO	Leeds	SE3186434345	0.8 km	NE/EPRRB3790EY/001
BEAUMONT ROAD CSO	Sheffield	SK3883586350	0.8 km	NE/EPRRB3354TK/001
GREASBROUGH CSO	Rotherham	SK4150095410	0.8 km	NE/3670/003
LONG SANDALL SSO	Doncaster	SE6035006750	0.8 km	NE/WADC602/001
CARNABY MOOR LANE SPS	East Riding of Yorkshire	TA1495564835	0.8 km	NE/WRA8753/005
NEWHILL PARK CSO	Rotherham	SE4313000200	0.8 km	NE/EPRUP3224XN/002
WIDE LANE MORLEY CSO	Leeds	SE2719027460	0.8 km	NE/WRA7407/003
GREENLAND ROAD CSO	Sheffield	SK3892298263	0.8 km	NE/WRA8156/002
RED DOLES ROAD CSO	Kirklees	SE1524018420	0.7 km	NE/2623/002
THORNHILL PARK AVENUE CSO	Kirklees	SE2508719787	0.7 km	NE/YWUCD2/30/001
CLAYTON HILL CSO	Wakefield	SE3210020200	0.7 km	NE/WADC1029/003
CSO AT VALLEY RD/APPLEGARTH/	North Yorkshire	SE3740093900	0.7 km	NE/S/UD/126/001
CHESTERFIELD ROAD CSO	Chesterfield	SK4294074040	0.7 km	NE/WADC627/003
WOODHALL WAY	East Riding of Yorkshire	TA0295040550	0.7 km	NE/3793(SS)/001
CARLISLE STREET CSO	Rotherham	SK4598798434	0.7 km	NE/3232/002
SICKLINGHALL CSO	North Yorkshire	SE3600048000	0.7 km	NE/4/004
LADY ANN ROAD	Kirklees	SE2507824714	0.7 km	NE/2634/001
WOODHEAD ROAD CSO	Kirklees	SE1206006704	0.7 km	NE/YWUCD2/55/001
VILLAGE GREEN CSO	North Yorkshire	SE2680158900	0.7 km	NE/S/RD/275/002
WATER END, LODGE LN, ROMANBY GRN PS	North Yorkshire	SE3700094600	0.7 km	NE/2218/001
ESHOLT STW	Bradford	SE1898038750	0.6 km	NE/WRA6925/011
OSSETT SPA SPS	Wakefield	SE2990019250	0.6 km	NE/WA6348/005
SNAITH SOUTH PUMPING STATION CSO	East Riding of Yorkshire	SE6398221832	0.6 km	NE/EPRQB3697NW/001
DENHOLME WHALLEY LANE SEW PMPG STN	Bradford	SE0744034860	0.6 km	NE/WRA7667/002
WESTBOURNE DRIVE NO. 2 CSO	Bradford	SE1692144372	0.6 km	NE/EPRZB3390EY/001
SPRING AVENUE CSO	Bradford	SE0745440936	0.6 km	NE/WRA7984/002
WESTBOURNE DRIVE NO. 1 CSO	Bradford	SE1699444355	0.6 km	NE/EPRZB3390VN/001
FIR COTTAGE CSO	Kirklees	SE2167019940	0.6 km	NE/WADC929/003
OXFORD ROAD CSO	Kirklees	SE2051827030	0.6 km	NE/YWUCD2/8/001
SUSSEX AVENUE CSO	Leeds	SE3158931139	0.6 km	NE/EPRSB3499VL/001
HOLDING NO 4	North Yorkshire	SE8730082100	0.6 km	NE/1122/001
VALLEY ROAD NORTH CSO	Rotherham	SK4519093700	0.6 km	NE/WA6003/002
BARWICK IN ELMETE SPS	Leeds	SE3978037740	0.6 km	NE/WRA8778/001
BELGRAVE ROAD BRIDGE CSO	East Riding of Yorkshire	TA1800466199	0.6 km	NE/EPRAB3895RU/002
WIGGINTON ROAD SSO	York	SE6034052920	0.6 km	NE/WADC1489/003
PRESTON (MANOR PARK) EMERGENGY SEW	East Riding of Yorkshire	TA1908030470	0.6 km	NE/YWUCD1/75/001
BEIGHTON STW	Sheffield	SK4300084300	0.6 km	NE/WADC709/003
ALTOFTS CHURCH ROAD CSO	Wakefield	SE3829324189	0.6 km	NE/WRA8136/002
WOODHOUSE LANE CSO	Calderdale	SE1529221978	0.6 km	NE/2479/002
HARROWDEN CSO	Doncaster	SE5878704635	0.6 km	NE/EPRUP3225XV/002
MARKET ST ECKINGTON CSO	North East Derbyshire	SK4303079420	0.6 km	NE/NPSWQD000393/004
HARROGATE ROAD CSO	North Yorkshire	SE3050070500	0.6 km	NE/WADC733/003
SNAYGILL SPS	North Yorkshire	SD9915049650	0.6 km	NE/WA5913/001
TICKHILLSTREET	Doncaster	SK4992899493	0.6 km	NE/S/UD/5/001
BLACK SWAN CSO	North Yorkshire	SE2950051000	0.6 km	NE/WADC722/003
BRANDSBY ROAD NO. 2 CSO	North Yorkshire	SE5630470701	0.6 km	NE/EPRHB3892RX/001
51 ST MARYS WALK	North Yorkshire	SE2950054500	0.6 km	NE/WADC644/001
BRANDSBY ROAD NO. 1 CSO	York	SE5630370711	0.5 km	NE/WADC744/003
WOODHOUSE SEWER NETWORK - 3 CSOS	Sheffield	SK4192585270	0.5 km	NE/S/CB/132/001
ASKERN SEWAGE PUMPING STATION	Doncaster	SE5675014863	0.5 km	NE/3817/003
LITTLEMOOR NEWBOLD CSO	Chesterfield	SK3691073830	0.5 km	NE/3778/003
LEEMING BAR CSO	North Yorkshire	SE2883089930	0.5 km	NE/WADC1071/003
BRUNSWICK PRIMARY SCHOOL CSO	Sheffield	SK4245084900	0.5 km	NE/3655/003
PONTEFRACT ROAD CSO	Wakefield	SE4276019990	0.5 km	NE/2481/005
BARNSLEY ROAD CSO	Sheffield	SK3622492168	0.5 km	NE/YWUCD2/97/001
16 CSO'S ALDWARK STEEL WORKS	Rotherham	SK4477094882	0.5 km	NE/S/CB/67/003

Sources: Environment Agency public register, Discharges to Water and Groundwater (Environment Agency Conditional Licence); National Storm Overflow Hub. The register is read weekly and every download is archived with a SHA-256 fingerprint (see how we keep the record).