Who is fixing it

Reduction tracker

Is each overflow actually spilling less? The reduction plan won't tell you per overflow — so we measure it from the spill record.

What the regulator requires Gaps Reduction tracker The calendar

What the plan is, and what it leaves out

The Storm Overflows Discharge Reduction Plan is the government's plan — published in 2022 and expanded in September 2023 — to cut how often England's storm overflows discharge. It sets deadlines by category, not by overflow:

By 2035 — overflows near every designated bathing water, and 75% of those near high-priority nature sites, must be improved.
By 2045 — the remaining high-priority overflows.
By 2050 — every storm overflow, with discharges capped at around 10 spills a year regardless of location.

The targets are due to be reviewed in 2027 — a commitment in the plan, not a statutory duty. But the plan sets no target for any individual overflow and publishes no per-overflow progress — only these whole-category deadlines, and it doesn't even publish which specific overflows are high-priority. So there is no official way to ask “is this overflow on track?” This page builds that view from the Environment Agency's EDM record: each overflow's counted spills per year — the EA's own 12/24-hour block figure, the same basis the cap is written in — against its 2020 baseline and the 2050 cap of ~10, with the deadline its location implies.

Above the 2050 cap

of 47 tracked

Rising since baseline

trend is the wrong way

On a 2035 deadline

near a bathing water

Within the cap

≤10 spills in 2025

Every overflow against its cap

Ranked by the latest full year's spills. The deadline is derived from proximity to a designated site — indicative, not an official per-overflow target. The dotted line on each trajectory is the 10-spills cap.

Overflow	Deadline	Baseline	Latest	Since baseline	vs cap	Trajectory	Verdict
Scorriton STWSO SBB01058	2050	35 ·21	141 168 events	+303%	14.1×		Rising
Totnes STWSSO SBB01264	2045	127	123 1,165 events	-3%	12.3×		Falling — behind
Harbertonford STWSSO SBB00537	2050	65	120 29 events	+85%	12×		Rising
Holne STWSO SBB00581	2050	128	117 115 events	-9%	11.7×		Falling — behind
Harberton STWSSO SBB00536	2050	232	116 121 events	-50%	11.6×		Falling — behind
Rattery STWSO SBB01016	2050	140 ·22	107 74 events	-24%	10.7×		Falling — behind
Kilbury STW, BuckfastleighSO SBB00179	2045	114	93 141 events	-18%	9.3×		Falling — behind
Kilbury STW, BuckfastleighSSO SBB00178	2045	126	90 97 events	-29%	9×		Falling — behind
Totnes Town pumping stationPS-CSO/EO SBB01265	2035	134	90 66 events	-33%	9×		Behind for 2035
Smith St, DartmouthCSO SBB01095	2035	102	85 158 events	-17%	8.5×		Behind for 2035
Cornworthy STW, DartmouthSSO SBB00309	2050	150	74 78 events	-51%	7.4×		Falling — behind
Ferry Boat pumping station, DittishamPS-CSO/EO SBB00446	2035	78	73 169 events	-6%	7.3×		Behind for 2035
Broadhempston STWSSO SBB00165	2050	303 ·21	57 25 events	-81%	5.7×		Falling — behind
Pear Tree Cross, AshburtonCSO SBB00917	2045	13 ·22	57 220 events	+338%	5.7×		Rising
Textile Mill, DartingtonCSO SBB01219	2050	11	52 67 events	+373%	5.2×		Rising
Harberton STWSO SBB00535	2050	189	52 82 events	-72%	5.2×		Falling — behind
Scout Hut, Stoke GabrielCSO SBB01060	2050	26	51 29 events	+96%	5.1×		Rising
Dittisham Main STWSO SBB00365	2035	74	46 159 events	-38%	4.6×		Behind for 2035
Mayors Avenue pumping station, DartmouthPS-CSO SBB00755	2050	106	46 26 events	-57%	4.6×		Falling — behind
31 Fore Street, TotnesCSO SBB00025	2035	38	46 50 events	+21%	4.6×		Rising
Dartington Sch TwoCSO SBB00349	2050	61	45 38 events	-26%	4.5×		Falling — behind
Lower Ferry pumping station, KingswearPS-CSO/EO SBB00712	2035	69	44 63 events	-36%	4.4×		Behind for 2035
Bridgetown Steamer Quay, TotnesCSO SBB01167	2035	50	39 65 events	-22%	3.9×		Behind for 2035
Stonepark Crescent, AshburtonCSO SBB01186	2045	53	39 59 events	-26%	3.9×		Falling — behind
Darthaven Marina pumping station, KingswearPS-CSO/EO SBB00348	2050	57	33 7 events	-42%	3.3×		Falling — behind
Dartington CCSO SBB00350	2050	15	33 39 events	+120%	3.3×		Rising
Opp 26 Market Street, BuckfastleighCSO SBB01408	2045	18 ·24	32 30 events	+78%	3.2×		Rising
Swallowfields, TotnesCSO SBB01196	2045	28	28 33 events	0%	2.8×		Falling — behind
Furzegood pumping station, MarldonPS-CSO/EO SBB00481	2045	40	26 24 events	-35%	2.6×		Falling — behind
Townstal Tank, DartmouthCSO SBB01269	2050	30	25 23 events	-17%	2.5×		Falling — behind
Staverton STWSSO SBB01166	2050	31	24 20 events	-23%	2.4×		Falling — behind
St Lukes Church, BuckfastleighCSO SBB01145	2045	23	23 7 events	0%	2.3×		Falling — behind
Quarry Close, TotnesCSO SBB00995	2050	16	23 27 events	+44%	2.3×		Rising
Stoke Gabriel pumping station, TotnesPS-CSO/EO SBB01178	2035	28	20 15 events	-29%	2×		Behind for 2035
St Johns Terrace, TotnesCSO SBB01138	2050	15	20 6 events	+33%	2×		Rising
Ashprington STWSSO SBB00053	2045	118	19 26 events	-84%	1.9×		Falling — behind
Shinners Bridge, DartingtonCSO SBB01082	2050	57	18 14 events	-68%	1.8×		Falling — behind
Old Woollen Mill, BuckfastleighCSO SBB00885	2045	3	17 12 events	+467%	1.7×		Rising
St Katherines Way, TotnesCSO SBB01140	2035	11	17 13 events	+55%	1.7×		Rising
Mill Creek pumping station, DittishamPS-CSO/EO SBB00776	2035	28	15 14 events	-46%	1.5×		Behind for 2035
Widecombe STW, Widecombe in the MoorSO SBB01359	2050	1 ·22	14 13 events	+1300%	1.4×		Rising
New Park Garden, WidecombeCSO SBB00830	2050	5 ·22	6 1 events	+20%	0.6×		Within the cap
Warfleet Creek pumping station, DartmouthPS-CSO/EO SBB01316	2035	4	6 7 events	+50%	0.6×		Within the cap
Priory Slip pumping station, KingswearPS-CSO/EO SBB00987	2035	5 ·21	5 3 events	0%	0.5×		Within the cap
Yarrow Bank pumping station, KingswearPS-CSO/EO SBB01385	2035	8 ·24	0 0 events	-100%	0×	—	Within the cap
Lower Collapark, TotnesCSO SBB00711	2050	1	0 0 events	-100%	0×		Within the cap
Ashprington STWSO SBB00052	2045	97	0 0 events	-100%	0×		Within the cap

What this is — and what it is not

This is River Hub's measurement, not the plan's. The reduction plan publishes no target for an individual overflow and no per-overflow progress — so we compare each outlet's counted spills to its 2020 baseline and the 10/year cap. Counted spills use the Environment Agency's 12/24-hour block method — the figure the cap is actually written in — taken from the published annual return where we have it and computed the same way for the current year; the smaller “events” figure beneath each is River Hub's count of discrete discharges over 15 minutes, shown for context. The deadline shown is derived by proximity to a designated site, not an official determination, and the plan is a policy commitment rather than a statutory duty. A falling trend is progress, but only ≤10 by the deadline is compliance. Where 2020 data is thin the baseline falls back to the earliest year on record, shown beside it. How the two counts differ →