To further enhance the conformity of plumbing products with the GA requirements, the WSD implements a surveillance programme for GA products. For details, please refer to WSD Circular Letter No. 8/2017.
A Material Testing Laboratory was set up in April 2018 for testing the plumbing products. The Laboratory was accredited by Hong Kong Accreditation Service (HKAS) under Hong Kong Laboratory Accreditation Scheme (HOKLAS) on 11 August 2021 (the registration number assigned to the Laboratory is HOKLAS 301).
For GA products with product certification, WSD consider that the regular monitoring of the product quality in the product certification schemes serves the same purpose as the Surveillance Programme and hence will be considered as satisfying the surveillance requirement. GA plumbing products that satisfy the criteria in WSD Circular Letter No. 4/2019 will be considered as satisfying the GA surveillance requirement and will not be further sampled by WSD in the market for compliance monitoring purpose
Currently the following Product Certification Schemes to Scheme Type 5 in BS EN ISO/IEC 17067 are acceptable to WSD:
| Product Certification Scheme | Certification Body | Country | |
|---|---|---|---|
| (a) | BSI Kitemark |
BSI Group |
United Kingdom |
| (b) | Benchmark |
BSI Group |
Australia |
| (c) | Watermark |
Australia Building Codes Board |
Australia |
| (d) | DVGW |
German Technical and Scientific Association for Gas and Water |
Germany |
| (e) | N Mark |
AENOR |
Spain |
List of GA Products with Surveillance Status "GA Removed"
| Effective Date | Type | Brand | GA Letter | Surveillance Status |
|---|---|---|---|---|
| 15 August 2023 | Copper alloy fittings with end feed connection ends - Coupler - WMC 50 mm | Welson | C20210357 | GA Removed |
| 13 December 2022 | Stainless steel silent check valve - Fig. 290SS 40 mm | Empire | C20180281 | GA Removed |
| 4 September 2022 | Wall mounted sink mixer |
EXQ |
C20210153 | GA Removed |
| 20 July 2021 | Copper alloy globe valve - 25mm BRGL | Conex Banninger | B20190055 | GA Removed |
| 1 June 2021 | Copper alloy gate valve - 3/4" WGV-501C | Wealthmark | C20161141 | GA Removed |
| 29 March 2021 | (a) Brass compression ball valve - 15mm 619 | Tipo | C20161080 | GA Removed |
| (b) Brass compression ball valve - 15mm 611 | ||||
| 23 November 2020 | Copper-phosphorus brazing alloy - SILVERFOS2 | Saldflux | M20180007 | GA Removed |
| 6 July 2020 | Copper alloy equilibrium float valve -20mm 901BL | Pegler | C20180688 | GA Removed |
| 19 June 2020 | Float operated valve - 3/8" 2105 |
Hansbo |
C20160466F | GA Removed |
List of GA Products with Surveillance Status "GA Suspended"
| Effective Date | Type | Brand | GA Letter | Surveillance Status |
|---|
Periodic summary of recent surveillance status is tabled below.
2026
| Effective Date | Item | Type | Brand | GA Letter | Surveillance Status |
|---|---|---|---|---|---|
| 31 May 2026 | 1 | Copper alloy fittings with compression connection ends - Bend - OL139 - 22 mm | OPAL | ZC20250562 | Pass |
| 2 | Copper alloy fittings with compression connection ends - Tee - OL150 - 22 mm | OPAL | ZC20250562 | Pass | |
| 3 | Copper alloy fittings with compression connection ends - Coupler - OL130 - 22 mm | OPAL | ZC20250562 | Pass | |
| 4 | Copper alloy fittings with press-fit connection ends - Coupler - Male Coupling - 28x1" (mm x inch) | Kempress | ZB20250020 | Pass | |
| 5 | Copper alloy fittings with press-fit connection ends - Bend - 90° Elbow Female Coupling - 28x1" (mm x inch) | Kempress | ZB20250020 | Pass | |
| 6 | Stainless steel pipes – Series 2 (316L) - 22mm | Holly | C20250133 | Pass | |
| 7 | Lead free solder wire (99C) - 99C | AIM | M20240004 | Pass | |
| 8 | Single lever sink mixer - KS845 - 3/8" | KSCO | C20240933 | Pass | |
| 9 | Deck mounted sink mixer - 5F-8DWS00 + 5SP-10 - 1/2" | T&S | ZC20250642 | Pass | |
| 10 | Deck mounted sink tap - X104000G2 - 1/2" | Bellini | C20230096 | Pass | |
| 11 | Single lever basin mixer - 33.5YY.831.XX - 3/8" | Dornbracht | C20230481 | Pass | |
| 12 | Single lever basin mixer - 49040 - 3/8" | AXOR | C20240800 | Pass | |
| 13 | Deck mounted single lever basin mixer - WR-511120-XX - 3/8" | Walrus | C20230338 | Pass | |
| 14 | Copper alloy ball valve - WH025-B - 25mm | Wah Hung | ZC20250684 | Pass | |
| 15 | Copper alloy angle valve - F205N - 1/2" x 3/8" | Fima Carlo Frattini | C20230353 | Pass | |
| 16 | Stainless steel gate valve - Z15W-16R - 25 mm | KD | C20230409 | Pass | |
| 17 | Copper alloy pressure reducing valve - WH009 - 50 mm | Wah Hung | C20220358 | Pass | |
| 18 | Stainless steel loose jumper stop valve - SV25SVC-6 - 25mm | HKS | C20220414 | Pass | |
| 19 | Copper alloy gate valve - Fig.100 - 1" | Kembla | ZC20250020 | Pass | |
| 20 | Plastic float operated valve - B3210-D - 3/8" | WDI | C20230500F | Pass | |
| 30 April 2026 | 1 | Copper alloy fitting with compression ends - Bend - 403 - 22 x 1/2" (mm x inch) | Kembla | B20230024 | Pass |
| 2 | Copper alloy fittings with compression ends - Coupler - 6301 - 22 (mm) | Eagle | C20240127 | Pass | |
| 3 | Copper alloy fittings with compression ends - Bend - 6403 - 22x¾"(mm x inch) | Eagle | C20240127 | Pass | |
| 4 | Copper alloy fittings with compression ends - Tee - 6601 - 22x22x22(mm) | Eagle | C20240127 | Pass | |
| 5 | Copper alloy fittings with solder ring connection ends - Coupler - YP3 - 15 x 1/2"(mm x inch) | Pegler Yorkshire | B20240029 | Pass | |
| 6 | Stainless steel pipes (316L) - EN652958-6 - 65mm | HKS | C20230335 | Pass | |
| 7 | Lead free solder wire (Lead Free) | DKL | ZM20250008 | Pass | |
| 8 | Single lever sink mixer - 30580XXX - 3/8" | Grohe | C20250131 | Pass | |
| 9 | Deck mounted sink mixer - WK-PR815 - 3/8" | Winkler | ZC20250651 | Pass | |
| 10 | Single lever sink mixer - WK-XX803 - 3/8" | Winkler | ZC20250611 | Pass | |
| 11 | Single lever basin mixer - GR08YXX - 3/8" | Paffoni | C20230259 | Pass | |
| 12 | Single lever shower mixer - RIN168XX - 1/2" | Paffoni | C20220895 | Pass | |
| 13 | Single lever basin mixer - WK-XX802 - 3/8" | Winkler | ZC20250505 | Pass | |
| 14 | Copper alloy stop valve - TYT-661 - 20 mm | TYT | ZC20250563 | Pass | |
| 15 | Stainless steel gate valve - SV32GVC-6 - 32 mm | HKS | C20230192 | Pass | |
| 16 | Stainless steel loose jumper stop valve - SV25SVC-4 - 25 mm | HKS | C20220416 | Pass | |
| 17 | Copper alloy loose jumper stop valve - BR303 - 25 mm | Valvemaker | ZC20250450 | Pass | |
| 18 | Duplex stainless steel angle stop valve - 2729S18 - 1/2" | Welson | C20240732 | Pass | |
| 19 | Copper alloy gate valv - 1065PT - 1/2" | Pegler | ZC20250257 | Pass | |
| 20 | Plastic float operated valve - B3210-C - 1/2" | WDI | C20230501F | Pass | |
| 31 March 2026 | 1 | Copper alloy fittings with compression connection ends - Coupler - KS610 - 15mm | Kuterlite | ZB20250017 | Pass |
| 2 | Copper alloy fittings with compression connection ends - Bend - KS615 - 15mm | Kuterlite | ZB20250017 | Pass | |
| 3 | Copper alloy fittings with push-fit connection end - Tee - T24/T130 - 15mm | Tectite Classic | B20250007 | Pass | |
| 4 | Copper alloy fittings with push-fit connection end - Bend - T12/T090 - 15mm | Tectite Classic | B20250007 | Pass | |
| 5 | Copper pipes (Type X) - Temper R290 - 66.7x1.2 | Kembla | ZC20250513 | Pass | |
| 6 | Copper-phosphorus brazing alloy - PC0 | OTTO | ZM20250006 | Pass | |
| 7 | Single lever sink mixer - 33.800.888.XX - 3/8" | Dornbracht | C20240111 | Pass | |
| 8 | Single lever sink tap - NO616 - 1/2" | EXQ | C20240380 | Pass | |
| 9 | Single lever sink mixer - S-1018 - 3/8" | Schleich | C20240451 | Pass | |
| 10 | Single lever kitchen mixer - 39832 - 3/8" | AXOR | C20240938 | Pass | |
| 11 | Single lever basin mixer - CF-1305.101.50 - 1/2" | American Standard | C20230933 | Pass | |
| 12 | Single lever basin mixer - BVH-11396C - 3/8" | Bellini | C20230414 | Pass | |
| 13 | Copper alloy angle valve - CP-18B - 1/2" x 3/8" | Kita | C20220465 | Pass | |
| 14 | Copper alloy angle valve - SC-7106 - 1/2" | Schlosser | ZC20250358 | Pass | |
| 15 | Copper alloy globe valve - BZ360 - 25mm | Valvemaker | C20240496 | Pass | |
| 16 | Stainless steel gate valve - NAGV25 - 25mm | New Age | C20250087 | Pass | |
| 17 | Copper alloy gate valve - R55Y - 25mm | Giacomini | C20220828 | Pass | |
| 18 | Copper alloy gate valve - TYT-361 - 28mm | TYT | ZC20250510 | Pass | |
| 19 | Plastic float operated valve - C-3134 - 1/2" | Kims | C20240189F | Pass | |
| 28 February 2026 | 1 | Stainless steel fittings with press ends connection (316L) - Tee - 1210 - 28mm | PCC | C20240542 | Pass |
| 2 | Stainless steel fittings with press ends connection (316L) - Tee - 1211 - 28x22x28 (mm ) | PCC | C20240542 | Pass | |
| 3 | Copper alloy fittings with compression ends - Coupler - H-CC01 - 22mm | Holly | C20220228 | Pass | |
| 4 | Copper alloy fittings with compression ends - Bend - H-CE01 - 22mm | Holly | C20220228 | Pass | |
| 5 | Copper alloy fittings with compression ends - Tee - H-CT01 - 22mm | Holly | C20220228 | Pass | |
| 6 | Stainless steel pipes (316L) - 28mm | N.U | C20240915 | Pass | |
| 7 | Lead free solder wire (Powerflow 99C) | Fernox | ZM20250007 | Under Compliance Test | |
| 8 | Single lever sink mixer - WK-ME805 - 3/8" | Winkler | C20220337 | Pass | |
| 9 | Single lever sink mixer - LV00133ACMEXX - 3/8" | Nobili | ZC20250547 | Pass | |
| 10 | Single lever sink mixer - 32321XX2 - 3/8" | Grohe | C20230970 | Pass | |
| 11 | Single lever shower mixer - E01-86-03-KV - 3/4" | Kovic | C20230507 | Pass | |
| 12 | Deck mounted single lever basin mixer - 5A3090XXX - 1/2" | Roca | C20220567 | Pass | |
| 13 | Wall mounted shower mixer - CF-0972.70X.50 - 1/2" | American Standard | C20240166 | Pass | |
| 14 | Stainless steel basket strainer - WK-03 - 50mm | Wai Kong | C20230216 | Pass | |
| 15 | Stainless steel gate valve - PIGV316002565 - 25mm | Anpro | C20221099 | Pass | |
| 16 | Copper alloy gate valve - WH025-A - 32mm | Sun | C20240850 | Pass | |
| 17 | Stainless steel flexible joint - NK-1000EX - 32mm | NFK | C20220197 | Pass | |
| 18 | Copper alloy angle valve - A-4400S - 1/2" | American Standard | C20240796 | Pass | |
| 19 | Copper alloy angle valve - 10117-913 - 1/2" x 3/8" x 3/8" | Oasi | C20240110 | Pass | |
| 20 | Plastic float operated valve - B3300-Y - 1/2" | WDI | ZC20250344F | Pass | |
| 31 January 2026 | 1 | Stainless steel fittings with press ends connection (304) - Bend - 90EMT - 28x1" (mm x inch) | Hensun | C20250024 | Pass |
| 2 | Stainless steel fittings with press ends connection (304) - Bend - 90EFT - 28x1" (mm x inch) | Hensun | C20250024 | Pass | |
| 3 | Stainless steel fittings with press-fit connection (304) - Bend - 90E - 28mm | Mayer | C20230569 | Pass | |
| 4 | Stainless steel fittings with press-fit connection (304) - Tee - 3T - 28mm | Mayer | C20230569 | Pass | |
| 5 | Stainless steel fittings with press-fit connection (304) - Coupler - S - 28mm | Mayer | C20230569 | Pass | |
| 6 | Stainless steel pipes (316L) - 25mm | Hensun-M | C20240936 | Pass | |
| 7 | Lead free solder wire (99C) - 99C | Fernox FRY | ZM20250009 | Pass | |
| 8 | Single lever sink mixer - X188 - 3/8" | Bellini | C20220126 | Pass | |
| 9 | Single lever sink mixer - FFAS5623-501XXXBC0 - 1/2" | American Standard | C20240026 | Pass | |
| 10 | Single lever kitchen mixer - RF23305-XX - 3/8" | Richford | C20250138 | Pass | |
| 11 | Deck mounted single lever basin mixer - 5A3081XXX - 1/2" | Roca | C20220933 | Pass | |
| 12 | Single lever basin mixer - 58001.XXX - 3/8" | Gessi | C20230286 | Pass | |
| 13 | Single lever shower mixer - 10611 - 1/2" | Hansgrohe | C20220466 | Pass | |
| 14 | Copper alloy globe valve - 1220 - 15mm | PSV | C20221150 | Pass | |
| 15 | Stainless steel float valve - SLK-1SSCP50- 50mm - 50mm | Aquapower | C20230562 | Pass | |
| 16 | Stainless steel flexible joint - SF600 - 20mm | Tozen | C20220578 | Pass | |
| 17 | Copper alloy stop valve - TYT-651 - 25(mm) | TYT | C20250157 | Pass | |
| 18 | Copper alloy Y-strainer - BZ604 - 25(mm) | Valvemaker | C20240422 | Pass | |
| 19 | Duplex stainless steel Y-strainer - 03501-D - 25 (mm) | YQ | ZC20250208 | Pass | |
| 20 | Plastic float operated valve - WH172B-T2 - 3/8" | TOTO | C20230682F | Pass |