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The primary objective is to quantify discolouration risk return rates through collaborative input from project members by tracking and simulating the long term turbidity behaviour across multiple sites. To achieve this each project member will provide data from one primary study site with periodic flow conditioning such that pipe wall mobilisisation is observed.
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CompanySite InformationTrial dates and details (flow increase, response observed, etc.)VCDM
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ContactSite Name
*Pipe Ø (mm)
*Pipe Length (m)
Notes (material, roughness, source, treatment, disinfectant etc.)
Baseline Conditioning
DetailsTrial 1DetailsTrial 2DetailsTrial 3DetailsTrial 4DetailsMobilisationAccumulation
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Anglian WaterStuart KnottThropston (Elmswell Tower DZ)1882135 (N) & 4742 (S)SI, A looping main that usually has low flow and can reverse but, for Jan, Feb & Mar each year has spot loading and the "draw point" from the north only. Borehole Source. IX then NaClO disinfection. Boosted from tower.
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Affinity WaterSam Giddingshorsley cross
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Dwr Cymru Welsh WaterTrystan DaviesSwansea4507.5DICL, chlorine
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Northern Ireland Water600mm DI20 miles (?)
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Northumbrian WaterJames BurnettBedlington & Skelton6100AC/DI/DIEL. upland res and river source from 2 different WTW, RGF and DAF with chlorine disinfection. Conditioned every monthUnder review
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Scottish WaterCaitlinGarbethill760755133” ST main from Carron Valley WTW to Braeface. Main Continues towards Grangemouth. 21” ST branch from Braeface toward Garbethill and Carrickstone DSRs.60 l/sJune 2022 flow event & widespread discolouration23/01/2023 to 09/02/2023150 l/s multiple steps16/05/233 step (92, 112 & 121 l/s)0.00082.5
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Southern WaterTom Rownhams
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South Staffs WaterOwen LewisHampden Lode - Sedgley22/05/23 & 1/06/23
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South West Water
Tony Bowen, Tom Martin
Hillerston600 / 3006900Weekly conditioning (or 1/month?). Extra nlengths being included.
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Thames WaterOliver BeaumontBeacon hill to Brasenose transfer24" main1400new pipework to be installed to velocity flush 24" main. Heyford PRV to have new valve fitted for extra control into the system. Both pieces of work due to be completed by 01.01.2023. once complete we will be able to control the flow via VSD'd or flow control gravity valve.60L/sWBS set to full flow every 7 days.happens every 7 days for 1hour at sa time.flow goes from 60L/s to 160L/s. Turbidity increase seen normaly sees an increase of around 0.15NTU19/09/2023 request sent for frequency to be changed from 7days to 14 days.2x flow increases - 1- flow goes from 60L/s to 180L/s. Turbidity increase seen was 0.55NTU. 2 - flow goes from 60L/s to 160L/s. Turbidity increase seen was 0.24NTU2 years of dataActuatorv valve; 2 boosters
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United UtilitiesReinar LokkMitchells1200CIProgressing
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Wessex WaterKen WongBowden3506.3DI, Ks = 3.5mm, 2 x borehole, chlorine10th April 202317 l/s - 23 l/s11th July17 l/s - 23 l/s 1 NTU response (higher than expecetd)8th sept17 l/s - 23 l/s >1 NTU response (higher than expecetd)
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Yorkshire WaterManar Al-Saffar1- Eccup to Harlow Hill 2- Hoober to Monkwood SRE, 3- Rusby Wood SRE to Shepley SRE1- 450mm 2- 15" 3- 500mm1- 14750m 2- 2080 m 3- 3574m1- DI 2- DI 3- DI3- 110 l/s
3- Flow is increase to 145 l/s every 2 weeks
1- 24/25 April1- 1 x pump 160 l/s to 180 l/stbc
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