A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

H2O Chemicals Ltd, Leeds, LS14 1AB - Tel: 0113 3060 400
email address: sales@h2ochemicals.co.uk ; web address:www.h2ochemicals.co.uk
A,B,C,D,E,F,G,H,I,L,M,O,Y(ISO 9001:2000)

H2O Environmental Services Ltd, Redditch, B98 0BG - Tel: 01709 817 074
email address: admin.h2o@btconnect.com ; web address:www.h2oenvironmental.co.uk
A,B,H,I,K,L,R,

H2O Nationwide Ltd, Essex, SS2 5ED - Tel: 01702 460 800
email address: info@h2onationwide.co.uk ; web address:www.h2onationwide.co.uk
A,H,I,M,O,Y(ISO 9001:2000)

Healthy Buildings International Ltd, Berkshire, RG7 1BU - Tel: 0118 988 9999
email address; info@hbi.co.uk : web address; www.hbi.co.uk
A,H,I,K,L,Y(ISO 9001:2001)

Healthy Buildings International Ltd (Northern Ireland), Belfast, BT6 8AW - Tel: 02890 738 777
email address; sales@hbi.ie : web address; www.hbi.ie
A,H,I,K,L,Y(ISO 9001:2000)

Henderson Green Ltd, Southampton, SO15 2EW - Tel: 0238 022 5900
email address; grahambrookbanks@hgce.co.uk : web address; www.hendersongreen.co.uk
A,

Henley Water Ltd, Buckinghamshire, HP7 0PQ - Tel: 01494 727 300
email address : sales@henleywater.co.uk ; web address : www.henleywater.co.uk
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,Q,S,T

Hertel Services, Hereford, HR2 8JJ - Tel: 01981 54 00 20
email address: gavinhartley@hertel.co.uk ; web address: www.hertel.co.uk
A,H,I,J,K,L,M,O,Y(ISO 9001:2008)

Houseman Water Hygiene Specialists Ltd, Essex, RM13 8EU - Tel: 0845 272 0881
email address;lazpaul@housemanwatertreatment.com : web address;www.housemanwatertreatment.com
A,B,C,D,E,F,G,H,I,L,M,N,O,Q,R,T,

Howlett Associates Water Treatment Ltd, Surrey, KT4 7JZ - Tel: 020 8337 3516
email address;info@hawtl.co.uk : web address;www.howlettassociates.co.uk
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P(solids analysis, test kits and reagents),Q,R,T,Y(ISO 9001:2000)

Hydraclean Ltd, Skelmersdale, WN8 9SX - Tel: 01695 727 391
email address; rburgess@hydraclean.co.uk : web address;www.hydracleanltd.co.uk
A,B,C,D,F,G,H,I,J,Q,R,Y(ISO 9001:2000)

Hydro Environmental Services Ltd, Plymouth, PL3 5NJ - Tel: 01752 662 280
email address; info@hydroenv.co.uk : web address; www.hydroenv.co.uk
A,B,C,D,F,G,H,I,L,M,N,O,Y(ISO 9000:2000)

Hydrocert Ltd, Herts, SG12 8QE - Tel: 0800 756 5270
email address;info@hydrocert.com : web address; www.hydrocert.com
A,B,C,F,G,H,I,J,K,L,M,N,O,

Hydrop Environmental Consultancy Services, West Midlands, B72 1RT - Tel: 0121 354 2030
email address; info@hydrop.com : web address ; www.hydrop.com
A,K,L,Y(ISO 9001:2000)

Hydro-Tech Environmental Services Ltd, Worcestershire, DY10 1HH - Tel: 01562 750 650
email address: hydrotech.services@virgin.net ; web address
A,B,C,D,E,F,G,H,I,J,Y(ISO9001:2000)

Hydroviron Ltd, Warwickshire, CV47 0JL - Tel: 0870 874 2587
email address;john@hydroviron.com : web address;www.hydroviron.com
A,B,G,H,K,L,

Hydro-X Water Treatment Ltd, Sheffield, S25 3QT - Tel: 01909 565 133
email address; office@hydro-x.co.uk : web address; www.hydro-x.co.uk
A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,Q,R,S,T,U(softeners/RO/demin),Y(ISO 9000:2000)