Water Resources Langelier Index Summary for Public Water Supplies in Management Division and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Anchor Point Anchor Point Well Cove Brook Feb 25, 2020 -0.64 Appleton Appleton (+Glenwood) Gander Lake (The Outflow) Feb 03, 2020 -5.96 Arnold's Cove Arnold's Cove Steve's Pond (2 Intakes) Feb 27, 2020 -3.13 Avondale Avondale Lee's Pond Feb 18, 2020 -2.50 Baie Verte Baie Verte Southern Arm Pond Feb 12, 2020 -5.46 Baine Harbour Baine Harbour Baine Harbour Pond Mar 05, 2020 -3.79 Bartletts Harbour Bartletts Harbour Long Pond (same as Feb 26, 2020 -0.70 Castors River North) Bay L'Argent Bay L'Argent Sugarloaf Hill Pond Mar 03, 2020 -3.88 Bay Roberts Bay Roberts, Spaniard's Bay Rocky Pond Feb 11, 2020 -4.89 Bay de Verde Bay de Verde Island Pond Feb 18, 2020 -4.61 Beaches Beaches Grassey Pond Brook Mar 09, 2020 -1.92 Beachside Beachside Long Pond Mar 02, 2020 -2.00 Bellburns Bound Brook Tributary Mar 10, 2020 0.45 Belleoram Belleoram Rabbits Pond Feb 04, 2020 -4.76 Bellevue Bellevue Big Pond Feb 26, 2020 -3.91 Bellevue Beach Bellevue Beach Unnamed Brook Feb 26, 2020 -5.26 Benton Benton Little Pond Feb 03, 2020 -4.49 Birchy Bay Jumper's Pond Feb 18, 2020 -2.24 Bird Cove (+Brig Bay) Inner Gilmour Pond Feb 26, 2020 -0.84 Bishop's Falls Bishop's Falls Northern Arm Lake Feb 17, 2020 -4.40 Black Duck Cove Black Duck Cove Long Pond - Black Duck Feb 26, 2020 -0.60 Cove Intake Bonavista Bonavista Long Pond Mar 12, 2020 -2.66 Botwood Botwood Northern Arm Lake Feb 17, 2020 -3.93 Branch Branch Valley Pond Jan 30, 2020 -5.05 Brent's Cove Brent's Cove Paddy's Pond Feb 11, 2020 -4.96 Brig Bay Brig Bay Inner Gilmour Pond Feb 26, 2020 -0.81 Brighton Brighton Hynes Cove Pond Feb 24, 2020 -1.75 Brigus Brigus (+Cupids, +South Brigus Long Pond (to Feb 18, 2020 -3.32 River) Brigus) Buchans Buchans Buchans Lake aka Sandy Jan 21, 2020 -5.54 Lake Buchans Buchans - PWDU Buchans Lake aka Sandy Jan 21, 2020 -4.70 Lake Buchans Junction Buchans Junction Lapland Pond Jan 21, 2020 -3.88 Burgoyne's Cove Burgoyne's Cove Lower Rocky Pond Mar 11, 2020 -2.63 Burin Burin Long Pond Mar 05, 2020 -4.80 Burin Burin (+Lewin's Cove) Big Pond Mar 04, 2020 -4.79 Burin Port au Bras Gripe Cove Pond Mar 05, 2020 -2.69 Burlington Burlington Eastern Island Pond Feb 12, 2020 -3.69 Burnt Islands Burnt Islands Long Lake Feb 18, 2020 -4.73

September 09, 2020 Page 1 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Burnt Islands Burnt Islands - PWDU Long Lake Feb 18, 2020 -5.81 Campbellton Campbellton Indian Arm Brook Feb 25, 2020 -2.74 Cape Freels North Cape Freels North Long Pond Feb 14, 2020 -4.01 Cape St. George Cape St. George, Red Rouzes Brook Feb 26, 2020 0.38 Brook, De-Grau, Marches Point Caplin Cove-Southport Southport Southport Pond Mar 11, 2020 -4.48 Carbonear Carbonear Island Pond / Flings Long Feb 11, 2020 -5.01 Pond Carmanville Grandfathers Pond Feb 14, 2020 -4.67 Castor River North Castor River North Long Pond (same as Feb 26, 2020 -0.70 Bartletts Harbour) Castor River South Castor River South Unnamed Feb 26, 2020 -0.13 Cavendish Cavendish Long Pond Feb 17, 2020 -3.14 Centreville-Wareham-Trinity Centreville-Wareham Northwest Pond Feb 06, 2020 -3.64 Centreville-Wareham-Trinity Trinity Southwest Feeder Pond Feb 06, 2020 -5.15 Chanceport Chanceport Bridger's Cove Pond Feb 25, 2020 -1.91 Channel-Port aux Basques Channel-Port Aux Basques Gull Pond & Wilcox Pond Feb 18, 2020 -3.59 Clarenville Clarenville, Shoal Harbour Shoal Harbour River Mar 11, 2020 -2.06 Clarke's Beach Clarkes Beach Clarkes Pond Feb 18, 2020 -5.34 Come By Chance Come By Chance Butchers Brook Feb 27, 2020 -1.23 Comfort Cove-Newstead Comfort Cove-Newstead Steady Cove Pond Feb 25, 2020 -2.29 Conception Bay South Conception Bay South Bay Bulls Big Pond Mar 03, 2020 -2.01 Conche Conche Martin's Brook Feb 24, 2020 -3.45 Conne River Conne River Southwest Brook Feb 04, 2020 -4.78 Cook's Harbour Cook's Harbour Unnamed Pond Feb 25, 2020 -0.43 Corner Brook Corner Brook (+Massey Trout Pond, Third Pond (2 Mar 13, 2020 -2.85 Drive, +Mount Moriah) intakes) Cottlesville Rushy Cove Pond Feb 25, 2020 -1.59 Cottrell's Cove Cottrell's Cove Cotrell's Pond Jan 29, 2020 -1.30 Cow Head Short Cat Path Pond Mar 10, 2020 -2.06 Cow Head Cow Head - PWDU Short Cat Path Pond Mar 10, 2020 -4.26 Crow Head Oars Pond Feb 04, 2020 -2.30 Cupids Cupids Brigus Long Pond (to Feb 18, 2020 -5.74 Brigus) Daniel's Harbour Daniel's Harbour Unnamed Spring & Brook Mar 10, 2020 -0.15 Deadman's Bay Deadman's Bay Deadman's Pond Feb 14, 2020 -3.78 Deep Bight Deep Bight Deep Bight River Mar 10, 2020 -3.46 Deer Lake Deer Lake (+Reidville) Humber Canal, Grand Lake Mar 03, 2020 -3.20 Dildo Dildo, Broad Cove (+South Broad Cove Pond Feb 17, 2020 -5.74 Dildo) Dover Dover Hare Bay Pond Feb 06, 2020 -5.42 Eddies Cove West Eddies Cove West Unnamed Feb 26, 2020 -0.12

September 09, 2020 Page 2 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Elliston Elliston Big Pond Mar 12, 2020 -4.34 Embree Embree (+) Troke's Cove Pond Jan 30, 2020 -3.59 Englee Island Cove Pond Feb 24, 2020 -3.83 Fairbanks-Hillgrade Fairbanks-Hillgrade Saltine's Pond Feb 04, 2020 -2.93 Fleur de Lys Fleur De Lys First Pond, Narrow Pond Mar 23, 2020 -4.24 Fleur de Lys Fleur De Lys First Pond, Narrow Pond Mar 23, 2020 -4.30 Fleur de Lys Fleur De Lys First Pond, Narrow Pond Mar 23, 2020 -4.34 Fleur de Lys Fleur De Lys First Pond, Narrow Pond Mar 23, 2020 -4.30 Flower's Cove Flower's Cove (+Nameless French Island Pond Feb 25, 2020 -0.68 Cove) Fogo Island Fogo Freeman's Pond Feb 05, 2020 -7.06 Fogo Island Joe Batt's Arm-Barr'd Long Pond Feb 18, 2020 -2.59 Islands-Shoal Bay Fogo Island Joe Batt's Arm-Barr'd Long Pond Feb 05, 2020 -5.07 Islands-Shoal Bay Fogo Island Joe Batt's Arm-Barr'd Long Pond Feb 18, 2020 -3.64 Islands-Shoal Bay Fogo Island Joe Batt's Arm-Barr'd Long Pond Feb 18, 2020 -2.51 Islands-Shoal Bay Fogo Island Seldom-Little Seldom Bullock Cove Pond Feb 05, 2020 -5.68 Fogo Island Seldom-Little Seldom - Bullock Cove Pond Feb 05, 2020 -5.99 PWDU Fogo Island Tilting Sandy Cove Pond Feb 05, 2020 -3.21 Forresters Point Forresters Point Rudges Pond Feb 26, 2020 -0.42 Fortune Fortune (+Grand Bank) Horsebrook Mar 04, 2020 -5.35 Fox Cove-Mortier Fox Cove-Mortier Rock Pond Mar 05, 2020 -2.89 Fox Roost-Margaree Fox Roost-Margaree Drilled Well and Margaree Feb 18, 2020 -6.21 Pond Gallants Gallants Gallant's Brook Feb 26, 2020 0.08 Gambo Gambo Dark Cove Pond Feb 03, 2020 -3.53 Gander Gander Gander Lake Feb 03, 2020 -2.76 Gander Bay South Gander Bay South - PWDU Barry's Brook Feb 14, 2020 -5.15 Gander Bay South George's Point, Harris Point Barry's Brook Feb 14, 2020 -3.56 Garden Cove Garden Cove Arch Cove Pond Mar 05, 2020 -3.79 Garnish Garnish Witchazel Pond Mar 04, 2020 -4.64 George's Brook-Milton George's Brook-Milton George's Brook Mar 11, 2020 -4.34 Georgetown Georgetown Third Pond Feb 18, 2020 -2.54 Gillams Gillams Meaters Pond Jan 30, 2020 -3.15 Glenburnie-Birchy Glenburnie-Birchy Croucher's Brook Feb 25, 2020 -1.90 Head-Shoal Brook Head-Shoal Brook Glenwood Glenwood Gander Lake (The Outflow) Feb 03, 2020 -4.82 Glovertown Glovertown Northwest Pond Mar 10, 2020 -4.42 Goobies Goobies Water Pond Mar 05, 2020 -4.57 Goose Cove East Jack's Pond Feb 25, 2020 -1.93

September 09, 2020 Page 3 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Grand Bank Grand Bank Horsebrook Mar 04, 2020 -4.39 Grand Falls-Windsor Grand Falls-Windsor Northern Arm Lake Feb 17, 2020 -2.04 (+Bishop's Falls, +Wooddale, +Botwood, +Peterview) Grand Le Pierre Grand Le Pierre Nip Nose Pond Mar 03, 2020 -4.76 Great Brehat Great Brehat Little Steady Pond Feb 25, 2020 -2.50 Green Island Brook Green Island Brook Green Island Brook Feb 25, 2020 -0.68 Greenspond Greenspond Shambler's Cove Pond Feb 13, 2020 -2.22 Hampden Hampden Elliot Brook Mar 09, 2020 -1.52 Hant's Harbour Hant's Harbour Eastern Pond (Halfway Feb 18, 2020 -5.06 Brook) Happy Adventure Happy Adventure Goose Neck Pond Mar 10, 2020 -3.34 Happy Valley-Goose Bay Happy Valley-Goose Bay Spring Gulch Feb 12, 2020 -2.59 Happy Valley-Goose Bay Happy Valley-Goose Bay Well Field (connect summer Feb 12, 2020 -2.50 2002) Harbour Breton Harbour Breton Connaigra Pond, Hutchings Feb 05, 2020 -1.97 Pond Harbour Grace Harbour Grace, Harbour Bannerman Lake Feb 11, 2020 -5.25 Grace South (+Riverhead) Harbour Main-Chapel's Harbour Main, Chapel's Maloney's River Feb 18, 2020 -2.42 Cove-Lakeview Cove, Lakeview Harbour Mille-Little Harbour Harbour Mille, Little Harbour Head Pond Mar 03, 2020 -4.16 East East (Fortune Bay) Hare Bay Hare Bay (+Dover) Hare Bay Pond Feb 06, 2020 -3.96 Hawke's Bay Hawke's Bay Torrent River Feb 26, 2020 -3.08 Heart's Content Heart's Content Southern Cove Pond Feb 17, 2020 -3.50 Heart's Delight-Islington Heart's Delight-Islington Long Pond Feb 17, 2020 -3.18 Heart's Desire Heart's Desire Terrence Pond Feb 17, 2020 -3.27 Hermitage Hermitage-Sandyville Granfer's Pond Feb 05, 2020 -7.46 Hermitage Hermitage-Sandyville - Granfer's Pond Feb 05, 2020 -4.90 PWDU Herring Neck Herring Neck, Hatchet Gut Pond Feb 04, 2020 -2.13 Harbour, Salt Harbour, Shoal Cove, Sunnyside Hickman's Hickman's Big Loss Pound Pond Mar 11, 2020 -2.66 Harbour-Robinson Bight Harbour-Robinson Bight Howley Howley Sandy Lake Mar 12, 2020 -4.12 Howley Howley - PWDU Sandy Lake Mar 12, 2020 -5.25 Hughes Brook Hughes Brook Reservoir Mar 13, 2020 0.01 Humber Arm South Frenchman's Cove Area Gurges Pond Mar 13, 2020 -2.85 Humber Arm South Halfway Point, Benoit's Dormody's Brook Mar 13, 2020 -2.40 Cove, John's Beach Indian Bay Indian Bay Indian Bay Brook Feb 13, 2020 -3.50 Irishtown-Summerside Irishtown Irishtown Brook Mar 13, 2020 -2.70 Isle aux Morts Isle aux Morts Burnt Ground Pond Feb 18, 2020 -2.03 Isle aux Morts Isle aux Morts - PWDU Burnt Ground Pond Feb 18, 2020 -3.79

September 09, 2020 Page 4 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Jackson's Arm Jackson's Arm Unnamed Brook Mar 09, 2020 -3.79 Jackson's Arm Jackson's Arm - PWDU Unnamed Brook Mar 09, 2020 -5.24 Jackson's Cove-Langdon's Silverdale, Nickey's Nose Nickey's Nose Cove Pond Mar 02, 2020 -2.64 Cove-Silverdale Cove Keels Keels Boland's Pond Mar 12, 2020 -5.36 King's Point King's Point Bulley's Pond Mar 02, 2020 -3.41 LaScie Stakes Pond Feb 11, 2020 -2.89 Labrador City Labrador City Beverly Lake Feb 10, 2020 -1.15 Lamaline Lamaline Upper Hodges Pond Mar 04, 2020 -4.18 Lamaline Lamaline - PWDU Upper Hodges Pond Mar 04, 2020 -3.49 Lark Harbour Lark Harbour Fairfax Brook Mar 13, 2020 -2.24 Lawn Lawn Brazil Pond Mar 04, 2020 -3.95 Lawn Lawn - PWDU Brazil Pond Mar 04, 2020 -5.09 Leading Tickles Cook's Pond Jan 29, 2020 -3.75 Leading Tickles Leading Tickles - PWDU Cook's Pond Jan 29, 2020 -2.73 Lewin's Cove Lewin's Cove Big Pond Mar 04, 2020 -5.42 Lewisporte Stanhope Pond Jan 30, 2020 -3.74 Little Bay Little Bay Mine Pond Mar 02, 2020 -1.23 Little Bay Little Bay First Pond Mar 02, 2020 -1.59 Little Burnt Bay Little Burnt Bay Troke's Cove Pond Jan 30, 2020 -3.57 Little Harbour East Little Harbour East Unnamed Pond Feb 27, 2020 -3.44 (Placentia Bay) Long Harbour-Mount Long Harbour-Mount Shingle Pond and/or Trout Jan 29, 2020 -3.06 Arlington Heights Arlington Heights Pond (2 Intakes) Loon Bay Loon Bay Southeast Pond Feb 18, 2020 -1.97 Lourdes Lourdes (+West Bay) Victor's Brook Feb 27, 2020 -0.48 Lower Lance Cove Lower Lance Cove Big Long Pond Mar 11, 2020 -2.84 Lumsden Lumsden Gull Pond Feb 14, 2020 -2.75 Lushes Lushes Bight, Beaumont Milkboy's Pond/Gull Pond Feb 26, 2020 -2.22 Bight-Beaumont-Beaumont North Lushes Lushes Bight, Beaumont - Milkboy's Pond/Gull Pond Feb 26, 2020 -5.38 Bight-Beaumont-Beaumont PWDU North Main Brook Joe Burt's Pond Feb 24, 2020 -1.59 Mainland Mainland Caribou Brook Feb 26, 2020 0.12 Marystown Marystown Fox Hill Reservoir / Clam Mar 04, 2020 -3.14 Pond Massey Drive Massey Drive Trout Pond, Third Pond (2 Mar 13, 2020 -2.80 intakes) Meadows Meadows, Summerside Meaters Pond Mar 12, 2020 -2.84 West Merritt's Harbour Merritt's Harbour Jimmy's Pond Feb 04, 2020 -2.60 Middle Arm Middle Arm Dam Pond Brook Feb 12, 2020 -2.27 Miles Cove Paddock's Pond Feb 26, 2020 -2.35

September 09, 2020 Page 5 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Millertown Millertown Water Pond Jan 21, 2020 -3.88 Milltown-Head of Bay Milltown, Head of Bay Jersey Pond Feb 04, 2020 -2.85 D'Espoir D'Espoir Ming's Bight Ming's Bight Middle Brook Pond Feb 11, 2020 -2.71 Morrisville Morrisville Morrisville Pond Feb 04, 2020 -3.11 Mount Moriah Mount Moriah Trout Pond, Third Pond (2 Mar 13, 2020 -2.29 intakes) Mount Pearl Mount Pearl Bay Bulls Big Pond Mar 03, 2020 -2.05 Musgrave Harbour Rocky Pond Feb 14, 2020 -3.41 Nameless Cove Nameless Cove / Flower French Island Pond Feb 25, 2020 -0.74 Cove New Chelsea-New Sibley's Cove, Lead Cove Sibley's Cove Pond Feb 18, 2020 -4.56 Melbourne-Brownsdale-Sibl ey's Cove-Lead Cove New Perlican New Perlican New Perlican River Feb 18, 2020 -3.20 New-Wes-Valley Newtown-Templeton Carter's Pond Feb 13, 2020 -3.66 New-Wes-Valley Wesleyville-Badger's Little Northwest Pond Feb 13, 2020 -3.15 Quay-Pool's Island, Brookfield-Poundcove Newman's Cove Newman's Cove Heale Pond Brook Mar 12, 2020 -3.87 Nippers Harbour Nippers Harbour Blackhead Pond Brook Feb 11, 2020 -3.44 Norman's Cove-Long Cove Norman's Cove-Long Cove John Newhooks Pond Feb 26, 2020 -4.53 Norris Arm Norris Arm (south) Mill Lake Feb 25, 2020 -4.38 Norris Point Neddy Harbour Pond Mar 04, 2020 -0.07 North Harbour North Harbour Grandfather's Pond Mar 05, 2020 -6.09 Northern Arm Northern Arm Northern Arm Lake Feb 17, 2020 -2.15 Old Perlican Old Perlican Bell Pond Feb 18, 2020 -5.59 Pacquet Big Brook Feb 11, 2020 -5.00 Pacquet Pacquet - PWDU Big Brook Feb 11, 2020 -5.66 Paradise Paradise Bay Bulls Big Pond Mar 03, 2020 -2.08 Parkers Cove Parkers Cove Unnamed brook Mar 05, 2020 -5.63 Parson's Pond Parson's Pond Cold Brook Mar 10, 2020 0.43 Pasadena Pasadena Blue Gulch Pond Mar 03, 2020 -3.22 Peterview Peterview Northern Arm Lake Feb 17, 2020 -2.23 Petit Forte Petit Forte Reddy's Pond Mar 05, 2020 -5.35 Petty Harbour-Maddox Cove Petty Harbour-Maddox Cove Western Barrens Pond Feb 25, 2020 -5.03 Phillips Head Phillips Head Dogberry Brook Jan 29, 2020 -1.91 Pidgeon Cove-St. Barbe Pigeon Cove - St. Barbe Long Pond Feb 26, 2020 -0.58 Pilley's Island Pilley's Island Loadabats Pond Feb 24, 2020 -1.15 Placentia Dunville Wyses Pond Jan 29, 2020 -4.08 Placentia Freshwater, Argentia site Clarkes Pond Jan 29, 2020 -3.42 Placentia Placentia, Jerseyside, SE Larkins Pond Jan 29, 2020 -3.09 Placentia Pleasantview Pleasantview Little Arm Pond Jan 29, 2020 -3.14

September 09, 2020 Page 6 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Plum Point Plum Point Grand Pond Feb 26, 2020 -0.82 Point Lance Point Lance Unnamed Pond Jan 30, 2020 -4.67 Point Leamington Little Pond Jan 29, 2020 -4.44 Point May Point May Short's Pond Mar 04, 2020 -2.40 Point May Point May - PWDU Short's Pond Mar 04, 2020 -4.46 Point of Bay Indian Cove Pond Jan 29, 2020 -2.97 Pollards Point Pollards Point East George Ricks Pond Mar 09, 2020 -3.34 Pollards Point Pollards Point, Country Cove Country Cove Pond Mar 09, 2020 -2.21 Pool's Cove Pool's Cove Widgeon Pond Feb 04, 2020 -3.50 Port Albert Port Albert Beaverton Pond Feb 05, 2020 -2.44 Port Anson Anchor Pond Feb 26, 2020 -2.07 Port Blandford Port Blandford Noseworthy's Pond Mar 10, 2020 -3.67 Port Saunders Tom Taylor's Pond Feb 26, 2020 -0.88 Port Saunders Port Saunders - PWDU Tom Taylor's Pond Feb 26, 2020 -1.69 Port au Choix Winterhouse Pond Feb 26, 2020 -0.35 Port au Choix Port au Choix - PWDU Winterhouse Pond Feb 26, 2020 -1.60 Portland Creek Portland Creek Unnamed Streams Mar 10, 2020 0.25 Portugal Cove-St. Phillips Portugal Cove-St. Phillips Bay Bulls Big Pond Mar 03, 2020 -1.87 Pouch Cove Pouch Cove North Three Island Pond Mar 10, 2020 -3.80 Purcell's Harbour Purcell's Harbour Purcell's Harbour Pond Feb 04, 2020 -3.31 Pynn's Brook Pynn's Brook Pynn's Brook Mar 12, 2020 -1.08 Ramea Ramea Northwest Pond Jan 26, 2020 -2.43 Ramea Ramea - PWDU Northwest Pond Jan 26, 2020 -3.73 Random Sound West Queen's Cove Reservoir Mar 11, 2020 -3.65 Rattling Brook Rattling Brook Mark's Pond Brook Mar 02, 2020 -4.33 River of Ponds Burnt Head Ponds Feb 26, 2020 -1.20 Robert's Arm Robert's Arm Young's Pond / Dam Pond Feb 24, 2020 -2.10 Rocky Harbour Rocky Harbour Gull Pond Mar 04, 2020 -0.90 Roddickton-Bide Arm Bide Arm First Clay Cove Pond Feb 24, 2020 -0.39 Roddickton-Bide Arm Roddickton East Brook Pond Feb 24, 2020 -0.91 Rose Blanche-Harbour Le Rose Blanche-Harbour Le Rose Blanche Brook Feb 18, 2020 -4.30 Cou Cou Rushoon Rushoon Big Pond Brook Mar 05, 2020 -4.73 Salmon Cove Salmon Cove Rocky Pond Feb 11, 2020 -4.54 Salvage Salvage Wild Cove Pond Mar 10, 2020 -3.90 Seal Cove (FB) Seal Cove, F.B. Big Black Duck Pond Feb 05, 2020 -5.01 Seal Cove (FB) Seal Cove, F.B. - PWDU Big Black Duck Pond Feb 05, 2020 -5.72 Seal Cove (WB) Seal Cove, W.B. Seal Cove Brook & Long Feb 12, 2020 -2.39 Pond Sheaves Cove Sheaves Cove Unnamed Brook Feb 26, 2020 -0.12

September 09, 2020 Page 7 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Shoe Cove Shoe Cove Second Pond Feb 11, 2020 -4.90 Smith's Harbour Smith's Harbour Fleshetts Brook Feb 12, 2020 -2.31 Sop's Arm Sop's Arm Little Tickle Pond Mar 09, 2020 -3.21 South Brook South Brook Next to Brook Feb 26, 2020 -1.45 South Dildo South Dildo Broad Cove Pond Feb 17, 2020 -2.39 South Dildo South Dildo Broad Cove Pond Mar 09, 2020 -6.42 South Dildo South Dildo Broad Cove Pond Mar 09, 2020 -6.63 South Dildo South Dildo Broad Cove Pond Mar 09, 2020 -6.69 South Dildo South Dildo Broad Cove Pond Feb 26, 2020 -6.84 South Dildo South Dildo Broad Cove Pond Feb 26, 2020 -6.28 South Dildo South Dildo Broad Cove Pond Feb 26, 2020 -5.50 South River South River Brigus Long Pond (to Feb 18, 2020 -5.31 Brigus) Southern Harbour Southern Harbour Brigades Pond Feb 27, 2020 -3.27 Spaniard's Bay Spaniard's Bay (+Upper Kelly's Pond (Spider's Feb 11, 2020 -2.86 Island Cove, + Bryant's Pond) Cove) Springdale Springdale Sullivan's Pond (2 Intakes) Mar 02, 2020 -2.60 St. Anthony St. Anthony St. Anthony Pond Feb 25, 2020 -3.33 St. Anthony Bight St. Anthony Bight Cabbox Pond Feb 25, 2020 -3.86 St. Bernard's-Jacques St. Bernard's-Jacques Rattle Brook Mar 03, 2020 -5.25 Fontaine Fontaine St. Bride's St. Bride's North Side Brook Jan 30, 2020 -3.55 St. Bride's St. Bride's South Side Brook Jan 30, 2020 -3.11 St. John's St. John's Petty Harbour Long Pond Feb 25, 2020 -1.31 St. John's St. John's Windsor Lake Feb 25, 2020 -1.99 St. John's St. John's (+Mt. Pearl, Bay Bulls Big Pond Mar 03, 2020 -2.08 +Paradise, +Portugal Cove-St. Phillips, +CBS) St. Judes St. Judes Uncle Arthur Brook Mar 03, 2020 -1.60 St. Judes St. Judes Chute Brook Mar 03, 2020 -1.35 St. Lawrence St. Lawrence St. Lawrence River Mar 04, 2020 -5.90 St. Lawrence St. Lawrence - PWDU St. Lawrence River Mar 04, 2020 -6.42 St. Lunaire-Griquet Gunners Cove Lookout Brook Feb 25, 2020 -1.51 St. Lunaire-Griquet St. Lunaire-Griquet Joe's Pond Feb 25, 2020 -4.99 St. Pauls St. Pauls Two Mile Pond Mar 10, 2020 -0.90 Steady Brook Steady Brook Wellfield + Steady Brook Mar 03, 2020 -1.57 Stephenville Stephenville Well Field Feb 26, 2020 0.09 Stoneville Stoneville Dog Bay Pond Brook Feb 05, 2020 -3.74 Straitsview Straitsview Saddle Hill Pond Feb 25, 2020 -2.56 Summerford Summerford (+Cottlesville) Rushy Cove Pond Feb 25, 2020 -1.50 Sunnyside (T.B.) Sunnyside Center Cove River Feb 27, 2020 -3.17

September 09, 2020 Page 8 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division Newfoundland and Labrador

Community Name Serviced Area Source Name Sample Date Langelier Index Terrenceville Terrenceville Big Brook Mar 03, 2020 -3.49 Thornlea Thornlea Big Bakeapple Pond Feb 26, 2020 -5.31 Tilt Cove Castle Rock Pond Feb 11, 2020 -1.45 Tizzard's Harbour Tizzard's Harbour Rocky Pond Feb 25, 2020 -4.15 Torbay Torbay North Pond Mar 17, 2020 -2.62 Trinity Trinity, T.B. Indian Pond Mar 12, 2020 -5.44 Trinity Bay North Little Catalina Whirl Pond Mar 12, 2020 -5.16 Trinity Bay North Melrose Whirl Pond Mar 12, 2020 -3.56 Trinity Bay North Port Union, Catalina (+Little Whirl Pond Mar 12, 2020 -4.09 Catalina) Triton Triton, Jim's Cove, Card's Triton Pond Feb 24, 2020 -2.09 Harbour Trout River Trout River Feeder Brook Feb 25, 2020 -1.42 Twillingate Wild Cove Pond Feb 04, 2020 -4.45 Upper Island Cove Upper Island Cove Kelly's Pond (Spider's Feb 11, 2020 -5.54 Pond) Victoria Victoria (+Salmon Cove) Rocky Pond Feb 11, 2020 -5.06 West Bay West Bay Unnamed Brook Feb 27, 2020 -0.25 West Bay West Bay Victor's Brook Feb 27, 2020 -0.40 Westport Westport Western Brook Pond Feb 12, 2020 -3.80 Whitbourne Whitbourne Hodges River Jan 29, 2020 -4.80 Whiteway Whiteway (+Cavendish) Long Pond Feb 17, 2020 -3.29 Whiteway Whiteway - PWDU Long Pond Feb 17, 2020 -2.71 Wild Cove Wild Cove Hedderson's Pond Brook Feb 12, 2020 -2.75 Winterton Winterton Western Pond Feb 18, 2020 -4.58 Wooddale Wooddale Northern Arm Lake Mar 03, 2020 -2.38 Woodstock Woodstock Mill Pond Feb 11, 2020 -5.13 Woody Point Woody Point Winterhouse Brook Feb 25, 2020 -1.30

September 09, 2020 Page 9 of 10 Water Resources Langelier Index Summary for Public Water Supplies in Management Division 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.

September 09, 2020 Page 10 of 10