Delyn polluted by sewage 1,076 times in 2022 - lasting 4,662 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for Delyn in 2022
54 Sites polluted by Dwr Cymru Welsh Water
1,076 sewage dumps
4,662 h duration
That's 6.47 months. On average 2.9 times a day

Pollution Summary 2022

Here are all the reported sewage overflow totals for Delyn in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Pentre Ffwrdan Stream Flint Mountain SPS 73 976 100
Dwr Cymru Welsh Water River Dee MARSH FARM PUMPING STATION 42 516 99.7
Dwr Cymru Welsh Water Northop Brook Northop Wastewater Treatment Works Settled Storm 38 392 99.5
Dwr Cymru Welsh Water River Alyn Settled Storm Overflow at Mold Wastewater Treatment Works 47 368 99.9
Dwr Cymru Welsh Water River Alun Leeswood Transfer SPS 33 358 100
Dwr Cymru Welsh Water River Dee Estuary Settled Storm Sewage at Flint WwTW 39 266 100
Dwr Cymru Welsh Water River Alyn CSO at Mynydd Isa Wylfa Hill 54 148 100
Dwr Cymru Welsh Water Gutter Fawr LLANASA PS CSO / EO 21 146 100
Dwr Cymru Welsh Water River Alyn CSO Mynydd Isa Chambers Lane/Mercia Drive Nr 2 61 134 99.4
Dwr Cymru Welsh Water Sw System DISCHARGE B 14 FFORDD DDYFRDWY 11 120 99.4
Dwr Cymru Welsh Water River Dee PEN Y MAES PUMPING STATION 28 116 99.4
Dwr Cymru Welsh Water Holywell Stream GREENFIELD PARENT CSO HOLYWELL 70 110 97.7
Dwr Cymru Welsh Water Wheeler Nannerch SPS 25 109 97.5
Dwr Cymru Welsh Water Nant Y Flint PENTRE HALKYN SPS 12 104 100
Dwr Cymru Welsh Water Ffynnongroew Drain FFYNNON WEST PS 11 100 99
Dwr Cymru Welsh Water S W Sewer MYNYDD ISA WATS DYKE AVE PS 31 81 100
Dwr Cymru Welsh Water Dee Estuary BAGILLT WEST SPS BAGILLT 38 80 100
Dwr Cymru Welsh Water Unnamed W/C FLINT IN GARDEN 102 MAES GWYN 73 71 82.4
Dwr Cymru Welsh Water Surface Water System MYNYDD ISA MOLD ROAD/MERCIA DR CSO 38 58 97.5
Dwr Cymru Welsh Water Pentre Ffwrndan Drain Oakenholt Main SPS 9 53 99.8
Dwr Cymru Welsh Water Stream To River Dee BOOT & SHIP PS , , 8 43 99.5
Dwr Cymru Welsh Water Greenfield Valley CSO Adjacent A548 Road Bridge 25 40 100
Dwr Cymru Welsh Water Dee Estuary BAGILLT EAST SPS 11 28 100
Dwr Cymru Welsh Water Estuarial Waters Of River Dee GREENFIELD WWTW (STW) GREENFIELD 16 27 100
Dwr Cymru Welsh Water River Alyn CSO at Mold Committee's Sewerage System 33 26 100
Dwr Cymru Welsh Water Black Brook Mold Bryn Awelon - CSO 21 25 100
Dwr Cymru Welsh Water Tan Lan Drains CSO at Tanlan Bach Pumping Station 4 23 100
Dwr Cymru Welsh Water River Wheeler CROOKED HORN SPS NO 3 BRYNFORD 23 18 75.3
Dwr Cymru Welsh Water River Y Garth SWN Y DWR CSO 8 16 72.3
Dwr Cymru Welsh Water Llanerchymor Gutter MOSTYN NEAR FUN SHIP - SSO 8 13 56.5
Dwr Cymru Welsh Water Dee Estuary FLINT BARDYN PS , , 32 13 98.1
Dwr Cymru Welsh Water Dee FLINT DEE COTTAGES PS 14 11 100
Dwr Cymru Welsh Water Unnamed W/C HOLYWELL PEN Y MAES RD/PEN Y M 29 11 99.7
Dwr Cymru Welsh Water New Drain STATION ROAD PS TALACRE 2 10 92.7
Dwr Cymru Welsh Water River Alyn CSO at Mold Gladstone St/Glan Yr Afon Rd 22 6 99.9
Dwr Cymru Welsh Water Marsiandwr TAI TREVOR PS LLANNERCHYMOR 4 5 100
Dwr Cymru Welsh Water River Dee GREENFIELD IND EST NO 1 HOLYWELL 4 3 100
Dwr Cymru Welsh Water Unnamed W/C BAGILLT STATION ROAD - SSO 5 3 100
Dwr Cymru Welsh Water Unnamed W/C BAGILLT GREENACRE DRIVE - SSO 11 3 99.6
Dwr Cymru Welsh Water Swinchiard Brook FLINT STW (THE MEADOWS) , , 3 3 100
Dwr Cymru Welsh Water River Dee Estuary DISCHARGE A 14 FFORDD DDYFRDWY 9 3 94.5
Dwr Cymru Welsh Water Unnamed W/C PEN Y FFORDD ADJ PEN Y FFORDD 5 2 90.4
Dwr Cymru Welsh Water River Alyn Mold Old St Davids Lane/Bridge St CSO 2 1 100
Dwr Cymru Welsh Water River Wheeler YSCEIFIOG CSO 2 1 99.9
Dwr Cymru Welsh Water Wepre Brook Northop Hall SPS 2 1 99.5
Dwr Cymru Welsh Water Nant Y Flint Lygan-Y-Wern Pentre Halkyn SPS 3 1 99.5
Dwr Cymru Welsh Water Unnamed W/C GREENFIELD A548 NR ABBEY MILL 3 0 100
Dwr Cymru Welsh Water River Alyn Mold Gas Lane CSO 3 0 99.9
Dwr Cymru Welsh Water River Alyn Mold Football Club Drice CSO 2 0 100
Dwr Cymru Welsh Water Unnamed Watercourse Bagillt verge off Manor Drive CSO 2 0 89
Dwr Cymru Welsh Water Culverted Of Dee MOSTYN DOCKS CAR PARK - SSO 1 0 18.6
Dwr Cymru Welsh Water River Alun Mynydd Isa Chambers lane/Mercia Drive CSO 2 0 100
Dwr Cymru Welsh Water River Alyn Bridge Inn Pumping Station 2 0 99.6
Dwr Cymru Welsh Water Unnamed W/C BAGILLT TYDDYN MESHAM LANE - SSO 1 0 32.3
Dwr Cymru Welsh Water Nant Brook Via A Ditch Leeswood Bethania SPS 0 0 100
Dwr Cymru Welsh Water River Alyn Mold Argoed CSO 0 0 99.4
Dwr Cymru Welsh Water River Alyn Mold Bryn Coch Lane/Lon Y Parc CSO 0 0 99.8
Dwr Cymru Welsh Water Gutter Fawr ARGOED PS 0 0 100
Dwr Cymru Welsh Water Unnamed W/C GWESPYR OLD STW - SSO 0 0 100
Dwr Cymru Welsh Water Surface Water Sewer Northop Hall CSO 0 0 7.1
Dwr Cymru Welsh Water Unnamed Watercourse MERLLYN LANE BAGILLT 0 0 99.2
Dwr Cymru Welsh Water Unnamed W/C HOLYWELL STRAND WALK NR STRAND 0 0 100
Dwr Cymru Welsh Water Maescoed Drain TALACRE STATION ROAD PS 0 0 0
Dwr Cymru Welsh Water River Alyn PONTBLYDDYN NO 1 PUMPING STATION 0 0 99.5
Dwr Cymru Welsh Water Culverted Of Dee MOSTYN ARMS PS MOSTYN 0 0 99
Dwr Cymru Welsh Water Dolfechlas Brook Rhydymwyn Wastewater Treatment Works Storm Overflow 0 0 100

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.