Find My DrainageAdd your business
← Back to Norwich
Harrison Civils & National Rivers Consortium

Harrison Civils & National Rivers Consortium

5.0(96 reviews)See reviews·Norwich
ConsultantWaste water and sewage treatment company
Harrison Civils & National Rivers Consortium — Customer photo
Harrison Civils & National Rivers Consortium — Customer photo
Harrison Civils & National Rivers Consortium — Customer photo
Harrison Civils & National Rivers Consortium — Customer photo
Harrison Civils & National Rivers Consortium — Customer photo
Harrison Civils & National Rivers Consortium — Customer photo

Reviews

Reviews are taken from publicly available sources.

AS
Andy Smith11 August 2026

I recently needed to replace our old septic tank with a new Sewage Treatment Plant + a new drainage field. I don’t live close to a river or pond, so didn’t benefit from the grants that others have mentioned meaning it was a sizable spend for me, but I was delighted with the work that Harrison Civils completed. The team had clearly done many of these before (several hundred I recall them saying!) and the work was done on schedule (only 2 ½ days), with no problems and the end cost was as per their original quote. The new system has worked perfectly since, so a big thank you to the team (Richard, Simon, Luke, Chas and Darren) for a very professional and high quality installation.

JH
Joanna Hanley26 May 2026

We had an excellent install from start to finish. John attended for the site survey and very informative. The install was well managed and the guys cleared up after they had finish. Then John came and did the commissioning check. Thanks to John, Andy, Simon and Rick. Would highly recommend.

AM
Adrian Morris8 April 2026

Harrison Civils and National Rivers Consortium has just completed an installation of an upgrade to the septic tank at our property in Kent. I was very impressed with their professionalism and skill in doing their job, and how impeccably tidy they left the site on completion. In particular, I would like to thank Deborah and Sophie in the Office; John who did the preliminary survey, and Andy, Simon, Rick and Harley, who did the installation , as well as Joss the electrician. Their interpersonal skills were excellent, and they functioned as a seamless and efficient team. Thank you very much.

MF
Michael Fernando13 March 2026

We have consistently worked with Norfolk rivers/harrisons civils for the past year now and they have always been so polite and accommodating. A very well put together company with experienced staff. Always a pleasure to be here on site.

AB
Adam Beard13 March 2026

We visit Harrison civil very frequently and the staff are always so kind and friendly. Cleanliness and presentation is next to none, this combined with the hospitality levels makes it a very pleasant visit.

EG
Emile Greenwood20 February 2026

We had our new treatment plant installed by Andy & John and they did a fantastic job. In and out in three days and all working fine on installation. The guy where friendly and professional and kept up to date and informed all throughout the process. Would highly recommend.

SC
Stuart Clay13 February 2026

I have got to compliment the team on the way in which our free Sewage Treatment Plant has been installed right from Sophie effortlessly organising the admin, Andy working sometimes single handedly to dig the trench & the drain to the ditch and creating a mountain of waste in excavating the hole for the tank to be sited. Together with John they worked sometimes with the machinery up to its axles in very wet clay ground but were able to make good at the conclusion. Joss followed by connecting up the electrics in a most professional manner and the system began functioning within 4 days of the start.

Septic tanks & sewage in Norwich compared

Ordered by rating, weighted by the number of reviews — businesses with only a handful of reviews do not jump to the top automatically. 5 businesses in this category in Norwich are compared.

RankProviderRatingReviewsOpen Sat.
1Harrison Civils & National Rivers Consortium (this page)★ 5,096No
2Ace Septic Tank Services★ 5,033No
3E.E. Bartlett Ltd★ 5,030Yes
4East Anglian Tankering Norfolk★ 4,929Yes
5Go Tankers Ltd★ 4,030No
Contact
+441328854549www.harrisoncivils.comClay Hall Industrial Estate, Heath Ln, Great Witchingham, Norwich NR9 5QL
Working hours
Monday07:00–16:00
Tuesday07:00–16:00
Wednesday07:00–16:00
Thursday07:00–16:00
Friday07:00–16:00
SaturdayClosed
SundayClosed