G/TBT/N/BDI/397, G/TBT/N/KEN/1492  
G/TBT/N/RWA/921, G/TBT/N/TZA/1025  
G/TBT/N/UGA/1832  
11 September 2023  
(23-6013) Page: 1/3 
Committee on Technical Barriers to Trade  Original: English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  BURUNDI, KENYA, RWANDA, TANZANIA, UGANDA  
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Rwanda Standards Board (RSB)  
KK 15 Rd, 49  
P.O.BOX 7099, Kigali, Rwanda  
Tel: +250 788303492  
Email: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [  ], 5.6.2 [  ], 5.7.1 [  ], 3.2 [  ], 7.2 [  ], 
other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Sewage 
water (ICS code(s): 13.060.30)  
5. Title, number of pages and language(s) of the notified document:  DEAS 1172: 
2023, Wastewater discharged on land and into water bodies — Specification; (18 page(s), 
in English)  
6. Description of content:  This draft east African standard specifies the requirements of 
wastewa ter discharged on land and into water bodies from municipal and industrial 
activities. The standard does not cover requirements for hazardous effluents that are 
classified as restricted substances which should be evaluated under relevant international 
agreements, conventions and protocols.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Consumer information, labelling; Prevention of deceptive practices and 
consumer protection; Protection of human health or safety; Protection of animal or plant 
life or health; Protection of the environment; Quality requirements; Harmonization; 
Reducing trade barriers and facilitating trade; Cost saving and productivity enhancement  G/TBT/N/BDI/397 • G/TBT/N/KEN/1492 • G/TBT/N/RWA/921 • G/TBT/N/TZA/1025 • 
G/TBT/N/UGA/1832  
 
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  8. Relevant documents:   
1. ISO 6107, Water qual ity — Vocabulary  
2. ISO 5815 -2:2003, Water quality — Determination of biochemical oxygen demand 
after n days (BODn) — Part 2: Method of undiluted samples  
3. ISO 11923:1997, Water quality — Determination of suspended solids by filtration 
through glass-fibre filters  
4. ISO 7027 -1, Water quality — Determination of turbidity — Part 1: Quantitative 
methods  
5. ISO 10301:1997, Water quality — Determination of highly volatile halogenated 
hydrocarbons — Gaschromatographic methods  
6. ISO 6468:1996, Water quality — Determination of certain organochlorine 
insecticides, polychlorinated biphenyls and chlorobenzenes — Gas 
chromatographic method after liquid -liquid extraction  
7. ISO 7875 -1, Water quality — Determination of surfactants — Part 1: 
Determination of anionic surfac tants by measurement of the methylene blue 
index (MBAS)  
8. ISO 10523, Water quality — Determination of pH  
9. ISO/TC 15923 -2, Water quality — Determination of selected parameters by 
discrete analysis systems — Part 2 — Chromium (VI), fluoride, total alkalinity, 
total hardness, calcium, magnesium, iron, iron (II), manganese and aluminium 
with photometric detection  
10. ISO 12846, Water quality — Determination of mercury — method using atomic 
absorption spectrometry (AAS) with and without enrichment  
11. ISO 17294 -2, Water qu ality — Application of inductively coupled plasma mass 
spectrometry (ICP -MS) — Part 2: Determination of selected elements including 
uranium isotopes  
12. ISO 8288, Water quality — Determination  
13. ISO 15923 -1, Water quality — Determination of selected parameters by discrete 
analysis systems — Part 1 — Ammonium, nitrate, nitrate, chloride, 
orthophosphate, sulphate and silicate with photometric detection  
14. ISO 11732, Water quality — Determination of ammonium nitrogen — method by 
flow analysis (CFA and FIA) and spectrometric detection  
15. ISO 11732, Water quality — Determination of dissolved sulphides — Photometric 
method using methylene blue  
16. ISO 15705, Water quality — Determination of the chemical oxygen demand index 
(ST-COD) — Small - scale sealed - tube method  
17. ISO 5663: 1984, Water quality — Determination of Kjeldahl nitrogen — Method 
after mineralization with selenium  
18. ISO 6222: 1999, Water quality — Enumeration of culturable micro -organisms — 
Colony count by inoculation in a nutrient agar culture medium  
19. ISO 6703 , Water quality — Determination of cyanide — Part 1: Determination of 
total cyanide  
20. ISO 24513:2019, Service activities relating to drinking water supply, wastewater 
and storm water systems — Vocabulary  
21. ISO 6777: 1984, Water quality — Determination of nitri te — Molecular absorption 
spectrometric method  
22. ISO 7393 -2, Water quality — Determination of free chlorine and total chlorine — 
Part 2: Colorimetric method using N, N -dialkyl -1,4-phenylenediamine, for routine G/TBT/N/BDI/397 • G/TBT/N/KEN/1492 • G/TBT/N/RWA/921 • G/TBT/N/TZA/1025 • 
G/TBT/N/UGA/1832  
 
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  control purposes ISO 7887: 1994, Water quality — Examination and 
determination of colour  
23. ISO 15586: 2003, Water quality — Determination of trace elements using atomic 
absorption spectrometer with graphite furnace  
24. ASTM D5907 -13, Standard test methods for filterable matter (total dissolved 
solids) and non -filterable matter (total suspended solids) in water  
25. ISO 5667 -10, Water quality — Sampling — Part 10: Guidance on sampling of 
waste water  
26. American Public Health Association (APHA) Standard Methods for the Examination 
of Water and Wastewater  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
Mr. Johnny Uwimana Hassan  
WTO/TBT Enquiry point  
Rwanda Standards Board  
KK 15 Rd, 49  
Kigali  
Tel: Hotline: 3250; +(250) 788636510  
Fax: +(250)788303492  
Email: info@rsb.gov.rw ; johnny.uwimana@rsb.gov.rw  
Website: http://www.rsb.gov.rw  
https://members.wto.org/crnattachments/2023/TBT/RWA/23_12252_00_e.pdf