Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Anchor Point Anchor Point Well Cove Brook Sep 17, 2019 -0.12 Appleton Appleton (+Glenwood) Gander Lake (The Outflow) Aug 12, 2019 -5.98 Aquaforte Aquaforte Davies Pond Aug 21, 2019 -3.06 Arnold's Cove Arnold's Cove Steve's Pond (2 Intakes) Aug 21, 2019 -2.95 Avondale Avondale Lee's Pond Sep 05, 2019 -1.50 Baie Verte Baie Verte Southern Arm Pond Sep 26, 2019 -5.92 Baine Harbour Baine Harbour Baine Harbour Pond Aug 29, 2019 -3.05 Bartletts Harbour Bartletts Harbour Long Pond (same as Sep 18, 2019 -0.04 Castors River North) Bauline Bauline #1 Brook Path Well Aug 15, 2019 -0.63 Bay L'Argent Bay L'Argent Sugarloaf Hill Pond Sep 05, 2019 -2.88 Bay Roberts Bay Roberts, Spaniard's Bay Rocky Pond Aug 27, 2019 -4.01 Bay de Verde Bay de Verde Island Pond Sep 27, 2019 -6.56 Bay de Verde Bay de Verde Island Pond Sep 27, 2019 -6.00 Beaches Beaches Grassey Pond Brook Aug 13, 2019 -2.22 Bellburns Bound Brook Tributary Sep 30, 2019 0.07 Belleoram Belleoram Rabbits Pond Sep 24, 2019 -6.52 Bellevue Bellevue Big Pond Sep 16, 2019 -2.80 Bellevue Beach Bellevue Beach Unnamed Brook Sep 16, 2019 -3.16 Benton Benton Little Pond Aug 14, 2019 -4.44 Birchy Bay Birchy Bay Jumper's Pond Aug 13, 2019 -2.16 Bird Cove (+Brig Bay) Inner Gilmour Pond Sep 17, 2019 0.23 Biscay Bay Biscay Bay Unnamed Pond Aug 21, 2019 -3.28 Bishop's Falls Bishop's Falls Northern Arm Lake Aug 15, 2019 -2.62 Black Duck Cove Black Duck Cove Long Pond - Black Duck Sep 17, 2019 -0.21 Cove Intake Black Tickle-Domino Black Tickle-Domino - Martin's Pond - Tap at Aug 15, 2019 -2.07 Outside Tap Pumphouse Black Tickle-Domino Black Tickle-Domino - Martin's Pond - Tap at Aug 15, 2019 -4.19 PWDU Pumphouse Bonavista Bonavista Long Pond Aug 13, 2019 -0.49 Botwood Botwood Northern Arm Lake Aug 15, 2019 -1.47 Branch Branch Valley Pond Sep 11, 2019 -4.26 Brent's Cove Brent's Cove Paddy's Pond Aug 14, 2019 -4.29 Brig Bay Brig Bay Inner Gilmour Pond Sep 18, 2019 0.18 Brigus Brigus (+Cupids, +South Brigus Long Pond (to Aug 27, 2019 -4.85 River) Brigus) Buchans Buchans - PWDU Buchans Lake aka Sandy Sep 23, 2019 -4.52 Lake Buchans Junction Buchans Junction Lapland Pond Sep 23, 2019 -4.37 Burgeo Burgeo Long Pond Sep 20, 2019 -2.94 Burgoyne's Cove Burgoyne's Cove Lower Rocky Pond Sep 03, 2019 -3.62 Burin Burin Long Pond Aug 28, 2019 -4.34

April 08, 2020 Page 1 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Burin Burin (+Lewin's Cove) Big Pond Aug 28, 2019 -4.27 Burin Port au Bras Gripe Cove Pond Aug 28, 2019 -3.26 Burlington Burlington Eastern Island Pond Sep 26, 2019 -3.94 Burnt Islands Burnt Islands Long Lake Sep 10, 2019 -5.18 Burnt Islands Burnt Islands - PWDU Long Lake Sep 10, 2019 -3.46 Cape Freels North Cape Freels North Long Pond Aug 20, 2019 -4.15 Cape St. George Cape St. George, Red Rouzes Brook Sep 24, 2019 0.96 Brook, De-Grau, Marches Point Caplin Cove-Southport Southport Southport Pond Sep 09, 2019 -2.93 Carbonear Carbonear Island Pond / Flings Long Aug 26, 2019 -4.22 Pond Carmanville Carmanville Grandfathers Pond Aug 14, 2019 -3.21 Cartwright Cartwright Burdett's Pond Aug 06, 2019 -4.99 Cartwright Cartwright - PWDU Burdett's Pond Aug 06, 2019 -5.12 Castor River North Castor River North Long Pond (same as Sep 18, 2019 0.09 Bartletts Harbour) Castor River South Castor River South Unnamed Sep 18, 2019 0.72 Cavendish Cavendish Long Pond Sep 12, 2019 -3.74 Centreville-Wareham-Trinity Centreville-Wareham Northwest Pond Aug 13, 2019 -4.44 Centreville-Wareham-Trinity Trinity Southwest Feeder Pond Aug 13, 2019 -4.32 Channel-Port aux Basques Channel-Port Aux Basques Gull Pond & Wilcox Pond Sep 10, 2019 -3.17 Charlottetown (Labrador) Charlottetown (Labrador) Middle Pond Aug 08, 2019 -3.49 Charlottetown (Labrador) Charlottetown (Labrador) - Middle Pond Aug 08, 2019 -3.14 PWDU Churchill Falls Churchill Falls Smallwood Reservoir Aug 29, 2019 -2.41 Clarenville Clarenville, Shoal Harbour Shoal Harbour River Aug 14, 2019 -2.34 Clarke's Beach Clarkes Beach Clarkes Pond Aug 27, 2019 -3.32 Come By Chance Come By Chance Butchers Brook Aug 21, 2019 -1.82 Conception Bay South Conception Bay South Bay Bulls Big Pond Aug 15, 2019 -1.73 Conche Conche Martin's Brook Aug 19, 2019 -2.81 Conne River Conne River Southwest Brook Sep 24, 2019 -4.91 Cook's Harbour Cook's Harbour Unnamed Pond Sep 16, 2019 -0.16 Corner Brook Corner Brook (+Massey Trout Pond, Third Pond (2 Sep 25, 2019 -2.35 Drive, +Mount Moriah) intakes) Cottrell's Cove Cottrell's Cove Cotrell's Pond Aug 20, 2019 -1.08 Cow Head Short Cat Path Pond Sep 30, 2019 -2.76 Cow Head Cow Head - PWDU Short Cat Path Pond Sep 30, 2019 -5.25 Cox's Cove Cox's Cove Cox's Brook Sep 25, 2019 -2.45 Crow Head Crow Head Oars Pond Aug 22, 2019 -2.64 Cupids Cupids Brigus Long Pond (to Aug 27, 2019 -4.34 Brigus) Daniel's Harbour Daniel's Harbour Unnamed Spring & Brook Sep 30, 2019 0.05

April 08, 2020 Page 2 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Deadman's Bay Deadman's Bay Deadman's Pond Aug 20, 2019 -3.99 Deep Bight Deep Bight Deep Bight River Aug 26, 2019 -2.20 Deep Bight Deep Bight Deep Bight River Aug 26, 2019 -2.56 Deep Bight Deep Bight Deep Bight River Aug 26, 2019 -2.09 Deep Bight Deep Bight Deep Bight River Aug 26, 2019 -2.23 Deer Lake Deer Lake (+Reidville) Humber Canal, Grand Lake Sep 05, 2019 -2.84 Dildo Dildo, Broad Cove (+South Broad Cove Pond Sep 12, 2019 -5.55 Dildo) Dover Dover Hare Bay Pond Aug 13, 2019 -4.78 Eddies Cove West Eddies Cove West Unnamed Sep 18, 2019 0.42 Elliston Elliston Big Pond Aug 13, 2019 -4.52 Embree Embree (+Little Burnt Bay) Troke's Cove Pond Aug 06, 2019 -3.12 Englee Island Cove Pond Aug 19, 2019 -2.52 Fairbanks-Hillgrade Fairbanks-Hillgrade Saltine's Pond Sep 18, 2019 -2.78 Fermeuse Fermeuse, Kingman's Merrymeeting Pond, Bear Aug 21, 2019 -2.29 Cove Pond (2 intakes) Ferryland Ferryland Deep Cove Pond Aug 21, 2019 -2.78 Fleur de Lys Fleur De Lys First Pond, Narrow Pond Sep 27, 2019 -3.27 Flower's Cove Flower's Cove (+Nameless French Island Pond Sep 17, 2019 -0.19 Cove) Fogo Island Joe Batt's Arm-Barr'd Long Pond Sep 30, 2019 -6.69 Islands-Shoal Bay Fogo Island Seldom-Little Seldom Bullock Cove Pond Sep 30, 2019 -5.19 Fogo Island Tilting Sandy Cove Pond Sep 30, 2019 -4.98 Forresters Point Forresters Point Rudges Pond Sep 17, 2019 0.14 Forteau Forteau Trout Brook Aug 07, 2019 0.35 Fortune Fortune (+Grand Bank) Horsebrook Aug 27, 2019 -4.83 Fox Roost-Margaree Fox Roost-Margaree Drilled Well and Margaree Sep 10, 2019 -5.68 Pond Fox Roost-Margaree Fox Roost-Margaree - Drilled Well and Margaree Sep 10, 2019 -4.20 PWDU Pond Gallants Gallants Gallant's Brook Sep 26, 2019 0.11 Gambo Gambo Dark Cove Pond Aug 13, 2019 -2.43 Gander Gander Gander Lake Aug 12, 2019 -2.38 Gander Bay South Gander Bay South - PWDU Barry's Brook Aug 14, 2019 -4.55 Gander Bay South George's Point, Harris Point Barry's Brook Aug 14, 2019 -2.81 Garden Cove Garden Cove Arch Cove Pond Sep 05, 2019 -3.59 Garnish Garnish Witchazel Pond Aug 28, 2019 -5.13 Gaskiers Gaskiers-Point La Haye Big Hare Hill Pond Aug 19, 2019 -2.31 George's Brook-Milton George's Brook-Milton George's Brook Sep 04, 2019 -3.12 Georgetown Georgetown Third Pond Sep 05, 2019 -3.79 Gillams Gillams Meaters Pond Sep 25, 2019 -2.69 Glenburnie-Birchy Glenburnie-Birchy Croucher's Brook Sep 27, 2019 -2.74 Head-Shoal Brook Head-Shoal Brook

April 08, 2020 Page 3 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Glenwood Glenwood Gander Lake (The Outflow) Aug 12, 2019 -5.67 Glovertown Glovertown Northwest Pond Aug 19, 2019 -3.21 Goobies Goobies Water Pond Sep 09, 2019 -3.70 Goose Cove East Jack's Pond Aug 20, 2019 -1.08 Grand Bank Grand Bank Horsebrook Aug 27, 2019 -5.07 Grand Falls-Windsor Grand Falls-Windsor Northern Arm Lake Aug 15, 2019 -2.27 (+Bishop's Falls, +Wooddale, +Botwood, +Peterview) Grand Le Pierre Grand Le Pierre Nip Nose Pond Sep 04, 2019 -3.74 Great Brehat Little Steady Pond Sep 16, 2019 -2.79 Green Island Brook Green Island Brook Green Island Brook Sep 17, 2019 -0.11 Greenspond Greenspond Shambler's Cove Pond Aug 13, 2019 -6.20 Hampden Hampden Elliot Brook Aug 13, 2019 -1.30 Hant's Harbour Hant's Harbour Eastern Pond (Halfway Sep 17, 2019 -4.51 Brook) Happy Adventure Happy Adventure Goose Neck Pond Aug 19, 2019 -3.46 Happy Valley-Goose Bay Happy Valley-Goose Bay Spring Gulch Jul 30, 2019 -3.01 Happy Valley-Goose Bay Happy Valley-Goose Bay Well Field (connect summer Jul 30, 2019 -1.79 2002) Harbour Breton Harbour Breton Connaigra Pond, Hutchings Sep 24, 2019 -2.97 Pond Harbour Grace Harbour Grace, Harbour Bannerman Lake Aug 26, 2019 -3.98 Grace South (+Riverhead) Harbour Main-Chapel's Harbour Main, Chapel's Maloney's River Sep 05, 2019 -1.65 Cove-Lakeview Cove, Lakeview Harbour Mille-Little Harbour Harbour Mille, Little Harbour Head Pond Sep 05, 2019 -6.38 East East (Fortune Bay) Hare Bay Hare Bay (+Dover) Hare Bay Pond Aug 13, 2019 -5.46 Hawke's Bay Hawke's Bay Torrent River Sep 18, 2019 -2.20 Heart's Content Heart's Content Southern Cove Pond Sep 12, 2019 -4.68 Heart's Delight-Islington Heart's Delight-Islington Long Pond Sep 12, 2019 -3.39 Heart's Desire Heart's Desire Terrence Pond Sep 12, 2019 -4.39 Herring Neck Herring Neck, Hatchet Gut Pond Sep 16, 2019 -1.97 Harbour, Salt Harbour, Shoal Cove, Sunnyside Hickman's Hickman's Big Loss Pound Pond Sep 04, 2019 -3.07 Harbour-Robinson Bight Harbour-Robinson Bight Hopedale Hopedale American Pond Aug 13, 2019 -4.31 Howley Howley Sandy Lake Sep 04, 2019 -3.92 Howley Howley - PWDU Sandy Lake Sep 04, 2019 -3.73 Hughes Brook Hughes Brook Reservoir Sep 20, 2019 0.26 Humber Arm South Frenchman's Cove Area Gurges Pond Sep 24, 2019 -2.31 Humber Arm South Halfway Point, Benoit's Dormody's Brook Sep 24, 2019 -2.21 Cove, John's Beach Indian Bay Indian Bay Indian Bay Brook Aug 13, 2019 -4.40 Irishtown-Summerside Irishtown Irishtown Brook Sep 26, 2019 -1.97

April 08, 2020 Page 4 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Irishtown-Summerside Summerside Pynn's Pond Sep 26, 2019 -3.44 Isle aux Morts Isle aux Morts - PWDU Burnt Ground Pond Sep 11, 2019 -3.07 Jackson's Arm Jackson's Arm Unnamed Brook Sep 25, 2019 -4.83 Jackson's Arm Jackson's Arm - PWDU Unnamed Brook Sep 25, 2019 -5.05 Jackson's Cove-Langdon's Silverdale, Nickey's Nose Nickey's Nose Cove Pond Sep 25, 2019 -2.82 Cove-Silverdale Cove Keels Keels Boland's Pond Aug 13, 2019 -4.50 King's Point King's Point Bulley's Pond Sep 25, 2019 -5.50 L'Anse au Clair L'Anse au Clair Park Pond Aug 07, 2019 0.08 L'Anse au Loup L'Anse au Loup L'anse Au Loup River Aug 08, 2019 -1.91 LaScie La Scie Stakes Pond Aug 14, 2019 -4.11 Labrador City Labrador City Beverly Lake Jul 18, 2019 -1.25 Lamaline Lamaline Upper Hodges Pond Aug 27, 2019 -2.56 Lamaline Lamaline - PWDU Upper Hodges Pond Aug 27, 2019 -4.36 Lark Harbour Lark Harbour Fairfax Brook Sep 24, 2019 -2.48 Lawn Lawn Brazil Pond Aug 27, 2019 -3.17 Lawn Lawn - PWDU Brazil Pond Aug 27, 2019 -4.19 Leading Tickles Leading Tickles Cook's Pond Aug 20, 2019 -2.86 Leading Tickles Leading Tickles - PWDU Cook's Pond Aug 20, 2019 -4.17 Lewin's Cove Lewin's Cove Big Pond Aug 28, 2019 -3.89 Lewisporte Lewisporte Stanhope Pond Aug 06, 2019 -2.22 Little Burnt Bay Little Burnt Bay Troke's Cove Pond Aug 06, 2019 -2.95 Little Harbour East Little Harbour East Unnamed Pond Aug 21, 2019 -2.26 (Placentia Bay) Long Harbour-Mount Long Harbour-Mount Shingle Pond and/or Trout Sep 16, 2019 -3.27 Arlington Heights Arlington Heights Pond (2 Intakes) Loon Bay Loon Bay Southeast Pond Sep 18, 2019 -2.60 Lourdes Lourdes (+West Bay) Victor's Brook Sep 24, 2019 0.14 Lower Lance Cove Lower Lance Cove Big Long Pond Sep 04, 2019 -6.49 Lumsden Lumsden Gull Pond Aug 20, 2019 -3.13 Main Brook Joe Burt's Pond Aug 19, 2019 -0.78 Mainland Mainland Caribou Brook Sep 24, 2019 0.91 Makkovik Makkovik Ranger Bight Pond Aug 14, 2019 -4.28 Makkovik Makkovik - PWDU Ranger Bight Pond Aug 14, 2019 -3.50 Mary's Harbour Mary's Harbour St. Mary's River Aug 07, 2019 -3.21 Mary's Harbour Mary's Harbour - PWDU St. Mary's River Aug 07, 2019 -3.18 Marystown Marystown Fox Hill Reservoir / Clam Aug 28, 2019 -2.28 Pond Massey Drive Massey Drive Trout Pond, Third Pond (2 Sep 25, 2019 -2.29 intakes) McIvers McIvers McIvers Brook Sep 26, 2019 -1.22 Meadows Meadows, Summerside Meaters Pond Sep 26, 2019 -2.75 West

April 08, 2020 Page 5 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Millertown Millertown Water Pond Sep 23, 2019 -3.39 Ming's Bight Ming's Bight Middle Brook Pond Sep 27, 2019 -2.92 Mount Moriah Mount Moriah Trout Pond, Third Pond (2 Sep 25, 2019 -2.26 intakes) Mount Pearl Mount Pearl Bay Bulls Big Pond Aug 15, 2019 -1.71 Musgrave Harbour Musgrave Harbour Rocky Pond Aug 20, 2019 -3.37 Nain Nain Trouser Lake Aug 14, 2019 -2.57 Nameless Cove Nameless Cove / Flower French Island Pond Sep 17, 2019 -0.15 Cove Natuashish Natuashish (Sango Bay) Sango Brook and Wellfield Aug 13, 2019 -0.72 New Chelsea-New Sibley's Cove, Lead Cove Sibley's Cove Pond Sep 17, 2019 -3.64 Melbourne-Brownsdale-Sibl ey's Cove-Lead Cove New Perlican New Perlican New Perlican River Sep 17, 2019 -2.60 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.67 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.13 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.56 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.57 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.54 New-Wes-Valley Newtown-Templeton Carter's Pond Sep 11, 2019 -3.23 New-Wes-Valley Wesleyville-Badger's Little Northwest Pond Aug 13, 2019 -2.70 Quay-Pool's Island, Brookfield-Poundcove Newman's Cove Newman's Cove Heale Pond Brook Sep 03, 2019 -4.83 Newman's Cove Newman's Cove Heale Pond Brook Aug 13, 2019 -3.84 Nippers Harbour Nippers Harbour Blackhead Pond Brook Sep 27, 2019 -4.58 Norman's Cove-Long Cove Norman's Cove-Long Cove John Newhooks Pond Sep 16, 2019 -1.24 Norris Point Neddy Harbour Pond Sep 20, 2019 -0.15 North Harbour North Harbour Grandfather's Pond Sep 05, 2019 -4.99 North West River North West River Wellfield (#1 & #3 Well) + Jul 30, 2019 -0.57 #2 Well Northern Arm Northern Arm Northern Arm Lake Aug 15, 2019 -1.63 Old Perlican Old Perlican Bell Pond Sep 17, 2019 -5.60 Pacquet Pacquet Big Brook Aug 14, 2019 -5.16 Pacquet Pacquet - PWDU Big Brook Aug 14, 2019 -5.19 Paradise Paradise Bay Bulls Big Pond Aug 15, 2019 -1.52 Parkers Cove Parkers Cove Unnamed brook Aug 29, 2019 -4.42 Parson's Pond Parson's Pond Cold Brook Sep 27, 2019 0.32 Pasadena Pasadena Blue Gulch Pond Sep 20, 2019 -2.65 Peterview Peterview Northern Arm Lake Aug 15, 2019 -1.99 Petit Forte Petit Forte Reddy's Pond Aug 29, 2019 -3.24 Petty Harbour-Maddox Cove Petty Harbour-Maddox Cove Western Barrens Pond Aug 13, 2019 -3.40 Piccadilly Head Piccadilly Head (+West Bay) Unnamed Brook Sep 26, 2019 -0.38

April 08, 2020 Page 6 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Pidgeon Cove-St. Barbe Pigeon Cove - St. Barbe Long Pond Sep 17, 2019 -0.14 Placentia Dunville Wyses Pond Sep 16, 2019 -2.19 Placentia Freshwater, Argentia site Clarkes Pond Sep 11, 2019 -2.62 Placentia Placentia, Jerseyside, SE Larkins Pond Sep 11, 2019 -2.58 Placentia Plum Point Plum Point Grand Pond Sep 17, 2019 -0.26 Point Lance Point Lance Unnamed Pond Sep 11, 2019 -3.63 Point May Point May Short's Pond Aug 27, 2019 -3.01 Point May Point May - PWDU Short's Pond Aug 27, 2019 -3.83 Point of Bay Point of Bay Indian Cove Pond Aug 20, 2019 -2.86 Pollards Point Pollards Point East George Ricks Pond Sep 25, 2019 -3.60 Pollards Point Pollards Point, Country Cove Country Cove Pond Sep 25, 2019 -1.96 Pool's Cove Pool's Cove Widgeon Pond Sep 24, 2019 -3.11 Port Albert Port Albert Beaverton Pond Sep 17, 2019 -2.04 Port Blandford Port Blandford Noseworthy's Pond Aug 12, 2019 -2.81 Port Hope Simpson Port Hope Simpson Arnold's Brook and Pond Aug 07, 2019 -4.58 Port Saunders Tom Taylor's Pond Sep 18, 2019 0.08 Port Saunders Port Saunders - PWDU Tom Taylor's Pond Sep 18, 2019 -0.57 Port au Choix Winterhouse Pond Sep 18, 2019 0.29 Port au Choix Port au Choix - PWDU Winterhouse Pond Sep 18, 2019 -2.49 Portland Creek Portland Creek Unnamed Streams Sep 27, 2019 0.08 Portugal Cove South Portugal Cove South Wrights Brook Aug 21, 2019 -3.06 Portugal Cove-St. Phillips Portugal Cove-St. Phillips Bay Bulls Big Pond Aug 15, 2019 -1.31 Postville Postville Big Pond Aug 14, 2019 -2.93 Postville Postville - PWDU Big Pond Aug 14, 2019 -3.03 Pouch Cove Pouch Cove North Three Island Pond Aug 13, 2019 -2.19 Purcell's Harbour Purcell's Harbour Purcell's Harbour Pond Aug 22, 2019 -0.96 Pynn's Brook Pynn's Brook Pynn's Brook Sep 20, 2019 -0.89 Ramea Ramea Northwest Pond Aug 15, 2019 -2.57 Ramea Ramea - PWDU Northwest Pond Aug 15, 2019 -4.86 Random Sound West Queen's Cove Reservoir Sep 09, 2019 -2.61 Rattling Brook Rattling Brook Mark's Pond Brook Sep 25, 2019 -4.78 Red Bay Red Bay Northern Brook Aug 07, 2019 -4.14 Reidville Reidville Humber Canal, Grand Lake Sep 04, 2019 -3.35 Rigolet Rigolet Rigolet Pond Aug 15, 2019 -4.71 Rigolet Rigolet - PWDU Rigolet Pond Aug 15, 2019 -5.37 River of Ponds River of Ponds Burnt Head Ponds Sep 30, 2019 -0.88 Rocky Harbour Rocky Harbour Gull Pond Sep 20, 2019 -0.95 Roddickton-Bide Arm Bide Arm First Clay Cove Pond Aug 19, 2019 0.23 Roddickton-Bide Arm Roddickton East Brook Pond Aug 19, 2019 -0.33

April 08, 2020 Page 7 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Rose Blanche-Harbour Le Rose Blanche-Harbour Le Rose Blanche Brook Sep 10, 2019 -3.76 Cou Cou Rushoon Rushoon Big Pond Brook Aug 29, 2019 -2.44 Salvage Salvage Wild Cove Pond Aug 19, 2019 -2.82 Seal Cove (WB) Seal Cove, W.B. Seal Cove Brook & Long Sep 27, 2019 -3.39 Pond Sheaves Cove Sheaves Cove Unnamed Brook Sep 24, 2019 0.42 Sheshatshiu Sheshatshiu - Indian Band Wells 1, 2 & 3 Jul 30, 2019 -1.07 Council Small Point-Adam's Adam's Cove #1 Well - Reg Bursey Well Jul 16, 2019 -0.07 Cove-Blackhead-Broad Cove Smith's Harbour Smith's Harbour Fleshetts Brook Sep 26, 2019 -3.97 Sop's Arm Sop's Arm Little Tickle Pond Sep 25, 2019 -2.99 South Dildo South Dildo Broad Cove Pond Sep 12, 2019 -4.66 South River South River Brigus Long Pond (to Aug 27, 2019 -4.46 Brigus) Southern Harbour Southern Harbour Brigades Pond Aug 21, 2019 -2.98 Spaniard's Bay Spaniard's Bay (+Upper Kelly's Pond (Spider's Aug 26, 2019 -4.61 Island Cove, + Bryant's Pond) Cove) Springdale Springdale Sullivan's Pond (2 Intakes) Sep 25, 2019 -2.66 St. Anthony St. Anthony St. Anthony Pond Aug 20, 2019 -2.29 St. Anthony Bight St. Anthony Bight Cabbox Pond Sep 16, 2019 -3.88 St. Bernard's-Jacques St. Bernard's-Jacques Rattle Brook Sep 05, 2019 -3.84 Fontaine Fontaine St. Bride's St. Bride's South Side Brook Sep 11, 2019 -2.70 St. Bride's St. Bride's North Side Brook Sep 11, 2019 -3.16 St. John's St. John's Petty Harbour Long Pond Aug 13, 2019 -0.92 St. John's St. John's Windsor Lake Aug 13, 2019 -1.46 St. John's St. John's (+Mt. Pearl, Bay Bulls Big Pond Aug 15, 2019 -1.33 +Paradise, +Portugal Cove-St. Phillips, +CBS) St. Judes St. Judes Uncle Arthur Brook Sep 20, 2019 -1.43 St. Judes St. Judes Chute Brook Sep 20, 2019 -1.43 St. Lawrence St. Lawrence St. Lawrence River Aug 27, 2019 -4.92 St. Lewis St. Lewis Tub Harbour Pond Aug 07, 2019 -2.48 St. Lunaire-Griquet Gunners Cove Lookout Brook Sep 17, 2019 -0.87 St. Lunaire-Griquet St. Lunaire-Griquet Joe's Pond Sep 17, 2019 -2.68 St. Pauls St. Pauls Two Mile Pond Sep 30, 2019 -0.78 St. Shott's St. Shott's Unnamed Pond Aug 19, 2019 -2.82 Steady Brook Steady Brook Wellfield + Steady Brook Sep 27, 2019 -1.07 Stephenville Stephenville Well Field Sep 23, 2019 0.57 Stoneville Stoneville Dog Bay Pond Brook Sep 16, 2019 -3.31 Straitsview Straitsview Saddle Hill Pond Sep 17, 2019 -2.16

April 08, 2020 Page 8 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Summerford Summerford (+Cottlesville) Rushy Cove Pond Aug 22, 2019 -1.34 Sunnyside (T.B.) Sunnyside Center Cove River Aug 21, 2019 -2.93 Terrenceville Terrenceville Big Brook Sep 04, 2019 -4.89 Thornlea Thornlea Big Bakeapple Pond Sep 16, 2019 -2.10 Torbay Torbay North Pond Aug 13, 2019 -1.46 Trepassey Trepassey Broom Cove Pond Aug 19, 2019 -1.84 Trepassey Trepassey Miller's Pond Aug 19, 2019 -1.64 Trinity Trinity, T.B. Indian Pond Aug 12, 2019 -5.10 Trinity Bay North Little Catalina Whirl Pond Aug 13, 2019 -3.45 Trinity Bay North Melrose Whirl Pond Aug 13, 2019 -2.94 Trinity Bay North Port Union, Catalina (+Little Whirl Pond Aug 13, 2019 -2.89 Catalina) Trout River Trout River Feeder Brook Sep 27, 2019 -1.43 Twillingate Twillingate Wild Cove Pond Aug 22, 2019 -3.44 Victoria Victoria (+Salmon Cove) Rocky Pond Aug 26, 2019 -3.23 Wabush Wabush Wahnahnish Lake Jul 17, 2019 -1.31 West Bay West Bay Unnamed Brook Sep 26, 2019 -0.02 West Bay West Bay Victor's Brook Sep 26, 2019 -0.50 West St. Modeste West St. Modeste Well Field Aug 07, 2019 -2.04 Whitbourne Whitbourne Hodges River Sep 16, 2019 -3.69 Whiteway Whiteway (+Cavendish) Long Pond Sep 12, 2019 -3.62 Whiteway Whiteway - PWDU Long Pond Sep 12, 2019 -5.17 Winterton Winterton Western Pond Sep 17, 2019 -3.34 Woody Point Woody Point Winterhouse Brook Sep 27, 2019 -1.97

April 08, 2020 Page 9 of 10 Department of Municipal Affairs Langelier Index Summary for Public Water Supplies in and Environment Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index

What is the Langelier Index?

The Langelier index (LI) is an approximate measure of the degree of saturation of calcium carbonate in water. It is calculated using the pH, alkalinity, hardness, total dissolved solids, and water temperature of a water sample collected at the tap. If the;

· LI is negative: The water is under saturated with calcium carbonate and will tend to be corrosive in the distribution system

· LI is positive: The water is over saturated with calcium carbonate and will tend to deposit calcium carbonate forming scales in the distribution system

· If LI is close to zero: The water is just saturated with calcium carbonate and will neither be strongly corrosive or scale forming.

The LI is one of several tools used by the water operator for stabilizing water to control both internal corrosion and the deposition of scale.

Experience has shown that LI in the range of -1 to +1 has a relatively low corrosion impact on metallic components of the distribution system. LI values outside this range may result in laundry stains or leaks. For additional information on the Langelier Index please contact the Department of Municipal Affairs and Environment at 729-2563.

April 08, 2020 Page 10 of 10