and Drinking Water Treatment Plants - 2021

Water Rated Population Commission Water Treatment Town Water Supply Serviced Area(s) Region Treatment Water Treatment Process Capacity Serviced Date Type Class (m3/day)

Ozone-Direct Sand filtration; ozone; multi-media filtration; activated carbon Long Pond Burgeo 1,464 W March 2013 Filtration 3 filtration; gas chlorination; and caustic soda for pH adjustment. 2,712 Lime, alum and polymer addition; coagulation/flocculation; multi- Gull Pond & Channel-Port aux Conventional water media filters (anthracite and sand); gas chlorination; lime Channel-Port aux Basques Wilcox Pond Basques 4,170 W 1988 treatment 3 addition for pH adjustment; carbonation basin. 10,000 Lime and alum addition; coagulation/flocculation; sedimentation using two plate settling tanks; three multi-media filters Shoal Harbour , Shoal November 15, Conventional water (anthracite and sand); gas chlorination; and pH adjustment Clarenville River Harbour 6,000 E 2007 treatment 4 using soda ash. 8,500 100 micron strainers; tubular nanofiltration membrane units; UV October 28, Membrane water disinfection system; mixed oxidant secondary disinfection Come by Chance Butchers Brook Come by Chance 246 E 2012 treatment 2 system; and limestone contactor for pH adjustment. 300 Southwest Membrane water Sand filtration; nano-filtration; soda ash addition for pH Conne River Brook Conne River 920 C 2006 treatment - adjustment; and hypochlorination using sodium hypochlorite. -

Coagulation/flocculation; clarification using dissolved air flotation; Conventional water multi-media filters (anthracite and sand); UV disinfection; soda (+Massey Drive, February 12, treatment (dissolved ash addition for pH and alkalinity adjustment; gas chlorination; Corner Brook Trout Pond +Mount Moriah) 21,618 W 2015 air floatation) 4 and polyphosphate addition as a corrosion inhibitor. 36,000 Grand Falls- Windsor (+Bishop's Pre-treatment with hydrated lime; alum addition; Falls, +Wooddale, coagulation/flocculation; sedimentation using plate settlers; multi- Exploits Regional Water Northern Arm +, Conventional water media filters (anthracite and sand); gas chlorination; and Supply Committee Lake +Peterview) 21,256 C January 1996 treatment 4 hydrated lime addition for pH adjustment. 27,000 Sand filtration; ozononation; multi-media filter (anthracite and Ozone-Direct sand); activated carbon filter; chloramination; and soda ash Gander Gander Lake Gander 11,054 C 2006 Filtration 3 addition. 8,000 Pre-screening; Alum and chlorine gas addition; coagulation/flocculation within the reactor tank; potassium Happy Valley- 7,552 (including November Semi-conventional permangate addition; three greensand pressure filters; and pH Happy Valley-Goose Bay Well Field Goose Bay Spring Gulch) L 2002 water treatment 3 adjustment with lime. 8,172

Pre-treatment using mixed oxidants and soda ash; coagulation using alum; polymer addition; flocculation; sedimentation using Heart's Delight- Conventional water tube settlers; mixed oxidant addition; multi-media filters Heart's Delight-Islington Long Pond Islington 700 E 2001 treatment 3 (anthracite and sand); mixed oxidant and soda ash addition. 545 alum addition and coagulation/flocculation; clarification Shingle Pond (dissolved air flotation process); multi-media filtration (sand and Long Harbour-Mount and/or Trout Long Harbour - September Conventional water anthracite); hypo-chlorination using sodium hypochlorite; pH and Arlington Heights Pond Arlington Heights 250 E 2016 treatment (DAF) alkalinity adjustment using soda ash. 572 Pre-filtration using cyclone filters; coagulation using aluminum Lourdes (+West September Semi-conventional chloride hydroxide suplphate (Sternpac); multi-media filters; and Lourdes Victor's Brook Bay) 532 W 2004 water treatment 2 gas chlorination. 760 Soda ash, alum and polymer addition; coagulation/flocculation; Conventional water tube settler sedimentation; multi-media filter (antracite, sand, Lumsden Gull Pond Lumsden 520 C 1972 treatment 2 and garnet); gas chlorination; and soda ash addition. 1,090

1 Newfoundland and Labrador Drinking Water Treatment Plants - 2021

Water Rated Population Commission Water Treatment Town Water Supply Serviced Area(s) Region Treatment Water Treatment Process Capacity Serviced Date Type Class (m3/day) pH and alkalinity adjustment using soda ash; coagulation/flocculation; microfiltration membrane units (chemical cleaning system using citric acid, sodium hypochlorite, Fox Hill and casutic soda); UV disinfection; secondary disinfection using Reservoir/ Clam Membrane water mixed oxidants; and corrosion inhibiter addition (zinc Pond Marystown 5436 E June 2012 treatment 2 orthophosphate). 13,608 Pre-treatment using soda ash; alum and polymer addition; Conventional water coagulation/flocculation; tube settler sedimentation; multi-media Musgrave Harbour Rocky Pond Musgrave Harbour 1,053 C 1998 treatment 3 filters (athracite and sand); and gas chlorination. 2,180 Ozone-Direct Filtration (not- Travelling screens; ozone; dual-media filtration (anthracite & Placentia Wyses Pond Dunville 1,093 E 1991 operational) 2 sand); soda ash addition; and gas chlorination. 1,362 Mulitmedia filtration (anthracite and sand), 5 micron cartridge North Three Membrane water filter, nano filtration, UV disinfection, Cl2 gas disinfection and Pouch Cove Island Pond Pouch Cove 1,866 E April 2019 treatment 2 soda ash pH adjustment 1,880

Pre-screening, Lime addition; alum and polymer addition; Conventional water coagulation/flocculation; sedimentation using tube filters; multi- Ramea Northwest Pond Ramea 526 W February 2002 treatment 3 media filters; gas chlorination; pH adjustment with caustic soda. 1,080 St. John's (+, +Paradise, +Portugal Cove-St. 1978 (original Travelling screens; pre-treatment using carbon dioxide, ACH Phillips, WTP) and lime addition; coagulation/floculation; clarification using Bay Bulls Big +Conception Bay Jan 2014 Conventional water dissolved air floatation; ozonation; dual-media filters (anthracite St. John's Pond South) 77,232 E (DAF) treatment (DAF) 4 and sand); chloramination; and lime. 110,000 Pre and post treatment for pH and alkalinity adjustment (carbon dioxide and lime); coagulationusing ACH; flocculation; dissolved air flotation; dual media filtration (anthracite and sand); UV Petty Harbour- Conventional water disinfection; and a gas chlorination secondary disinfection St. John's Long Pond St. John's 14,758 E 2015 treatment (DAF) 4 system. 26,000 Travelling screens; pre-treatment using carbon dioxide and lime; microfiltration membrane system (5 primary filters and 3 secondary filters); membrane chemical cleaning system using Membrane water citric acid, sodium hydroxide and sodium bisulphate; UV St. John's Windsor Lake St. John's 60,518 E 2007 treatment 4 disinfection; and gas chlorination. 70,000

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