Health Advisories listed on this page are inactive, meaning they are no longer in effect. Active advisories are listed, while in effect, on the main health advisories page.
Inactive Advisories: North Zone
- Precautionary air quality advisory lifted in Alberta - September 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Lac Ste. Anne - August 23, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Calling Lake - August 23, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Shiningbank Lake - August 10, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Kehewin Lake - August 2, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Cold Lake - August 1, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Bonnie Lake - August 1, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Goose Lake - August 1, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Lac La Biche Lake - July 31, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Lac Santé - County of St. Paul - July 31, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Fork Lake - July 30, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Floating Stone Lake - July 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Laurier Lake - July 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Steele (Cross) Lake - July 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Peanut Lake - July 26, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Lac La Nonne - July 26, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Moose Lake - July 20, 2018
- Confirmed case of measles prompts public alert to potential exposure - July 13, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Stoney Lake - June 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Vincent Lake - June 26, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Isle Lake - Onoway - June 19, 2018
- Precautionary Air Quality Advisory issued for Fort McMurray, Anzac, Janvier, Conklin and Fort McKay - Updated - May 25, 2018
- Water Quality Advisory Lifted for Camper’s Beach in Sir Winston Churchill Provincial Park in Lac La Biche - August 24, 2018
- Water Quality Advisory issued for Camper’s Beach in Sir Winston Churchill Provincial Park on Lac La Biche - August 10, 2018
- Precautionary air quality advisory lifted for Fort McMurray, Anzac, Janvier, Conklin and Fort McKay - June 18, 2018
- Precautionary Air Quality Advisory issued for Alberta Health Services’ North Zone - May 5, 2016
- Precautionary Air Quality Advisory lifted for Jasper - May 4, 2018
- Water hauler closure order lifted - April 20, 2018
- Precautionary air quality advisory lifted for North Zone - November 21, 2017
- Blue-green algae (Cyanobacteria) bloom advisories lifted - North Zone - November 1, 2017
- Water consumption advisory lifted near South Rosevear Gas Plant in Yellowhead County - October 4, 2017
- Contaminated water advisory lifted for Moose Lake Provincial Park Beach - September 19, 2017
- UPDATE: Additional products potentially contaminated with Hepatitis A - September 6, 2017
- Hepatitis A found in Western Family pineapple product - September 2, 2017
- Air Quality Advisory lifted for the Fort McMurray, Fort McKay and Fort Chipewyan-areas - June 5, 2017
- Precautionary Air Quality Advisory lifted for Fort McKay - March 17, 2017
- Blue-green algae (Cyanobacteria) bloom advisories - November 9, 2016
- Contaminated water advisory lifted for Campground Beach at Calling Lake Provincial Park - September 12, 2016
- Contaminated water advisory lifted for South Dock Campground public beach on Jackfish Lake - September 9, 2016
- Boil Water Advisory lifted for all areas serviced by Fort McMurray water treatment plant - August 17, 2016
- Contaminated water advisory lifted for Devonshire Beach on Lesser Slave Lake - July 28, 2016
- Air Quality Advisory lifted for Fort McMurray - June 14, 2016
- Gastro-Intestinal Illness Outbreaks Declared Over - June 7, 2016
- Air Quality Advisory lifted for Bonnyville, St. Paul, Cold Lake, Lac La Biche, Smoky Lake and Elk Point - May 24, 2016
- Boil Water Advisory issued for Fort McMurray - May 18, 2016
- Air Quality Advisory issued for Fort McMurray - May 2, 2016
- Precautionary air quality advisory lifted for La Crete, High Level, Fort Vermilion - February 3, 2016
- Blue-green algae advisories lifted in North Zone - November 3, 2015
- Contaminated water advisory lifted for Kinosoo Beach on Cold Lake - August 25, 2015
- Contaminated water advisory lifted for Plamondon Whitesands Beach and McArthur Beach, on Lac La Biche Lake - August 28, 2015
- Air Quality Advisory issued for City of Cold Lake, Town of Bonnyville and surrounding areas - July 10, 2015
- Air Quality Advisory lifted for Wood Buffalo region - July 07, 2015
- Heat Advisory issued for the North Zone - June 26, 2015
- North East
- North West and North Central
- Precautionary Air Quality Advisory issued for North Zone of Alberta Health Services - May 26, 2015
- Air Quality Advisory lifted for the City of Cold Lake and surrounding areas - June 8, 2015
- Blue-green algae advisories lifted for 20 North Zone lakes - November 6, 2014
- Contaminated water advisory lifted for Clear Lake - area of Barrhead - October 16, 2014
- Contaminated water advisory lifted for Lac Ste. Anne at Alberta Beach, - September 17, 2014
- Contaminated water advisory lifted for Iosegun Lake, Grande Prairie - September 10, 2014
- Precautionary Air Quality Advisory lifted for the Central and Edmonton Zones of Alberta Health Services Remains in effect for North Zone - July 28, 2014
- Heat advisory lifted for: Fort McMurray and Mildred Lake - August 17, 2014
- Heat advisories lifted for: Fort Chipewyan, Mildred Lake, Whitecourt, Slave Lake, Lac La Biche - August, 2014
- Precautionary air quality advisory lifted for The Valley-area of Hinton - June 27, 2014
- Air quality advisory lifted for regions of High Level, Fort McMurray, Cold Lake and Slave Lake - August 12, 2013
- Precautionary fire smoke advisory lifted for High Level region and areas north of Fort McMurray - July 9, 2013
- Freshwater algae advisory lifted for Fork Lake (County of Lac La Biche) - June 5, 2013
- Blue-green algae advisories lifted for 21 North Zone bodies of water - October 3, 2013
- Edson-area bear cub exposure poses risk to health - May 23, 2013
- Blue-green algae advisories lifted for 14 North Zone lakes - October 10, 2012
- Boil Water Advisory lifted for Village of Rycroft - October 5, 2012
- Precautionary fire smoke advisory lifted for North Zone - September 27, 2012
- Contaminated water advisory lifted for Franchere Bay at Moose Lake; Blue-Green Algae advisory still in effect - August 22, 2012
- Air Quality Advisory lifted: North Zone - July 23, 2012
- Practise sun and heat safety in summer weather - July 9, 2012
- Hantavirus confirmed in rural Albertan; important precautions urged - May 31, 2012
- Boil Water Advisory lifted for Village of Rycroft - March 23, 2012
- Blue-green algae advisory lifted for Baptiste Lake - November 9, 2011
- Blue-green algae advisory lifted for Lake Isle - October 26, 2011
- Blue-green algae advisory lifted for Calling Lake - October 24, 2011
- Simple precautions will prevent the spread of illness - October 21, 2011
- Blue-green algae advisory lifted for Shiningbank Lake - September 21, 2011
- Unapproved tattoo operators ordered to cease practice; clients require testing - September 14, 2011
- Cleaning the House After a Flood - July 8, 2011
- Flooded Premises - July 8, 2011
Inactive Advisories: Edmonton Zone
- Precautionary air quality advisory lifted in Alberta - September 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Heritage Lake - July 27, 2018
- Water quality advisory issued for Hasse Lake - July 6, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Isle Lake - Edmonton - June 19, 2018
- Confirmed case of measles prompts public alert to potential exposure (St. Albert)- June 6, 2018
- Confirmed case of measles prompts public alert to potential exposures - May 15, 2018
- Confirmed hep A case prompts public alert in local area - March 22, 2018
- Confirmed case of invasive meningococcal disease prompts public alert to potential exposure - February 27, 2018
- Precautionary air quality advisory lifted for Edmonton Zone - November 21, 2017
- Blue-green algae (Cyanobacteria) bloom advisories lifted - Edmonton Zone - November 1, 2017
- UPDATE: Additional products potentially contaminated with Hepatitis A - September 6, 2017
- Hepatitis A found in Western Family pineapple product - September 2, 2017
- Precautionary Air Quality Advisory issued for Edmonton Zone of Alberta Health Services - July 10, 2017
- Confirmed case of measles prompts public alert to potential exposures - March 3, 2017
- Confirmed hepatitis A case prompts public alert in Edmonton-area - December 22, 2016
- Contaminated water advisory lifted for Hasse Lake - November 9, 2016
- Blue-green algae (Cyanobacteria) bloom advisories - November 9, 2016
- Boil Water Advisory lifted for Town of Stony Plain - August 22, 2016
- Boil Water Advisory issued for Stony Plain - August 19, 2016
- Unsanitary home-based tattoo operation ordered to close; follow-up testing recommended - Edmonton - August 17, 2016
- Improper sterilization procedures may have exposed medical clinic patients to Hepatitis B and C - July 18, 2016
- Gastro-Intestinal Illness Outbreaks Declared Over - June 7, 2016
- E. coli outbreak linked to certain pork products in Alberta declared over - June 1, 2017
- Precautionary Air Quality Advisory issued for Edmonton Zone of Alberta Health Services - May 19, 2016
- Blue-green algae advisories lifted in North Zone - November 3, 2015
- Contaminated water advisory lifted for Mission Beach on Pigeon Lake - September 3, 2015
- Air Quality Advisory lifted for Edmonton Zone of Alberta Health Services - September 1, 2015
- Contaminated water advisory lifted for Hasse Lake - September 1, 2015
- Heat Advisory issued for the Edmonton Zone of Alberta Health Services - August 12, 2015
- Heat Advisory issued for the Edmonton Zone of Alberta Health Services - July 10, 2015
- Heat Advisory issued for Edmonton Zone - June 26, 2015
- Blue-green algae advisories lifted for five Edmonton Zone lakes - November 12, 2014
- Contaminated water advisory lifted for Hasse Lake - November 1, 2014
- Heat advisories lifted for Edmonton - August 2, 2014
- Precautionary Air Quality Advisory lifted for the Central and Edmonton Zones of Alberta Health Services Remains in effect for North Zone - July 28, 2014
- Blue-green algae advisories lifted for six Edmonton Zone lakes - October 3, 2013
- Precautionary air quality advisory lifted for the City of Edmonton, and communities north and east of Edmonton - September 22, 2013
- Precautionary air quality advisory lifted for city of Edmonton, and communities east of Edmonton - March 31, 2013
- Blue-green algae advisories lifted for six Edmonton Zone lakes - October 3, 2013
- Precautionary air quality advisory lifted for city of Edmonton - February 13, 2013
- Precautionary fire smoke advisory lifted for Edmonton Zone - October 1, 2012
- Air Quality Advisory lifted: Edmonton and area only - July 16, 2012
- Practise sun and heat safety in summer weather - July 9, 2012
- Information for people with flooding issues - July 12, 2012
- Hantavirus confirmed in rural Albertan; important precautions urged - May 31, 2012
- Boil Water Advisory lifted for City of Fort Saskatchewan - May 13, 2012
- Precautionary fire smoke advisory lifted: Edmonton and Enoch - December 14, 2011
- Blue-green algae advisory lifted for Lake Isle - October 26, 2011
- Air quality advisory for Edmonton area lifted - October 13, 2011
- Blue-green algae advisory lifted for Pigeon Lake - October 7, 2011
- Unapproved tattoo operators ordered to cease practice; clients require testing - September 14, 2011
- Infectious Syphilis/Sexually Transmitted Infections (STI) - May 25, 2011
Inactive Advisories: Central Zone
- Precautionary air quality advisory lifted in Alberta - September 27, 2018
- Water quality advisory lifted for Islet Lake - September 11, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Haunted Lake - August 23, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Open Creek Reservoir - August 21, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Buck Lake - August 9, 2018
- Water quality advisory issued for Islet Lake - August 7, 2018
- Water quality advisory lifted for Battle River at Riverdale Mini Park - August 3, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Lac Santé - Two Hills - July 31, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Hiller’s Dam - July 30, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Wapasu Lake - July 25, 2018
- Water quality advisory issued for Battle River at Riverdale Mini Park - July 12, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Alix Lake - July 6, 2018
- Contaminated water advisory lifted for Miquelon Lake - June 20, 2018
- Boil Water Advisory lifted for Village of Alix - May 14, 2018
- Boil Water Advisory issued for Village of Alix - May 10, 2018
- Boil Water Advisory lifted for Town of Bentley - March 15, 2018
- Precautionary air quality advisory lifted for Central Zone - November 21, 2017
- Blue-green algae (Cyanobacteria) bloom advisories lifted - Central Zone - November 1, 2017
- UPDATE: Additional products potentially contaminated with Hepatitis A - September 6, 2017
- Water Quality Advisory issued for Miquelon Lake - July 11, 2017
- Precautionary Air Quality Advisory issued for Central Zone of Alberta Health Services - July 10, 2017
- Blue-green algae (Cyanobacteria) bloom advisories - November 9, 2016
- Gastro-Intestinal Illness Outbreaks Declared Over - June 7, 2016
- Precautionary air quality advisory lifted for La Crete, High Level, Fort Vermilion - May 19, 2016
- Blue-green algae advisories lifted in Central Zone - November 3, 2015
- Air Quality Advisory lifted for Central Zone of Alberta Health Services - September 1, 2015
- Contaminated water advisory issued for Grandview Beach on Pigeon Lake - August 18, 2015
- Heat Advisory issued for the Central Zone of Alberta Health Services - August 12, 2015
- Precautionary Air Quality Advisory lifted for northeast Central Zone - July 14, 2015
- Heat Advisory issued for Wainwright and area - July 10, 2015
- Heat Advisory issued for Vegreville and area - July 10, 2015
- Air Quality Advisory lifted for Red Deer and area - July 8, 2015
- Air Quality Advisory lifted for Red Deer and area - July 8, 2015
- Heat Advisory issued for Central Zone - June 26, 2015
- Blue-green algae advisories lifted for five Central Zone lakes - November 6, 2014
- Heat advisory lifted for: Drumheller - August 17, 2014
- Heat advisory lifted for: Wainwright and Coronation - August 16, 2014
- Unsanitary tattoo operation ordered to close - follow-up testing recommended - August 8, 2014
- Heat advisories lifted for: Wainwright, Vegreville, Elk Island Park - August 2, 2014
- Precautionary Air Quality Advisory lifted for the Central and Edmonton Zones of Alberta Health Services Remains in effect for North Zone - July 28, 2014
- Industrial spill confirmed in Bashaw; important precautions urged - July 23, 2014
- Boil water advisory lifted for Drayton Valley - May 14, 2014
- Blue-green algae advisory lifted for Gull Lake - August 30, 2013
- Hantavirus confirmed in rural Albertan; important precautions urged - August 27, 2013
- Flood Updates and Resources - June 20, 2013
- Blue-green algae advisories lifted for four Central Zone lakes - October 3, 2013
- Blue-green algae advisories lifted for Pine Lake and Pigeon Lake - October 10, 2012
- Practise sun and heat safety in summer weather - July 9, 2012
- Hantavirus confirmed in Central Alberta; important precautions urged - July 5, 2012
- Blue-green algae advisory lifted for Pigeon Lake - October 7, 2011
- Unapproved tattoo operators ordered to cease practice; clients require testing - September 14, 2011
- Infectious Syphilis/Sexually Transmitted Infections (STI) - May 27, 2011
Inactive Advisories: Calgary Zone
- Precautionary air quality advisory lifted in Alberta - September 27, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Clear Lake - August 24, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Pine Coulee Reservoir - August 23, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Eagle Lake - August 17, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Twin Valley Reservoir - August 9, 2018
- Precautionary air quality advisory issued for Alberta - August 8, 2018
- Contaminated water advisory remains in place for Elbow River (within the city of Calgary) - June 21, 2018
- Contaminated water advisory remains in place for Elbow River (within the city of Calgary) - June 21, 2018
- Precautionary air quality advisory lifted for Municipal District of Foothills - June 14, 2018
- Confirmed case of measles prompts public alert to potential exposures (Banff) - June 5, 2018
- Precautionary Air Auality Advisory issued for Municipal District of Foothills - May 28, 2018
- Confirmed case of measles prompts public alert to potential exposures - January 29, 2018
- Blue-green algae (Cyanobacteria) bloom advisories lifted - Calgary Zone - November 1, 2017
- Precautionary air quality advisory lifted for Calgary Zone - November 21, 2017
- UPDATE: Additional products potentially contaminated with Hepatitis A - September 6, 2017
- Hepatitis A found in Western Family pineapple product - September 2, 2017
- Precautionary Air Quality Advisory issued for Calgary Zone of Alberta Health Services - July 16, 2017
- Case of measles confirmed in AHS Calgary Zone - April 11, 2017
- Unsanitary and unlicensed dental operation ordered to close; client testing recommended - March 28, 2017
- Blue-green algae (Cyanobacteria) bloom advisories - November 9, 2016
- Contaminated water advisory extended for Elbow River (within the city of Calgary) - August 26, 2016
- Unsanitary home-based tattoo operation ordered to close - Calgary Zone - February 8, 2016
- Confirmed case of measles prompts public alert to potential exposures - Calgary Zone - January 28, 2016
- Boil Water Advisory lifted for Village of Carmangay - January 26, 2016
- Precautionary Air Quality Advisory lifted for Town of High River - December 15, 2015
- Confirmed Lake Louise-area hepatitis A case prompts public alert - November 19, 2015
- Blue-green algae advisories lifted in Calgary Zone - November 3, 2015
- Air Quality Advisory lifted for the Calgary Zone of Alberta Health Services - September 1, 2015
- Heat Advisory issued for Calgary Zone of Alberta Health Services - August 11, 2015
- Heat Advisory issued for the Calgary Zone of Alberta Health Services - July 9, 2015
- Heat Advisory issued for Calgary Zone - June 26, 2015
- Hepatitis A vaccine clinic update - June 24, 2015
- Confirmed Strathmore-area hepatitis A case prompts public alert - June 22, 2015
- Unsanitary tattoo operation ordered to close - followup testing recommended - November 5, 2014
- Blue-green algae advisories lifted for four Calgary Zone bodies of water - November 6, 2014
- Blue-green algae advisories lifted for five Calgary Zone bodies of water - November 8, 2013
- Blue-green algae advisory lifted for Eagle Lake - October 10, 2012
- Boil Water Advisory lifted for three northwest Calgary communities; remains in effect for three - June 10, 2012
- Fire smoke advisory lifted for Calgary-area, including Tsuu T’ina Nation - February 13, 2012
- Unapproved piercing operation closed; clients require testing - February 1, 2012
- Street drug Ecstasy prompts health alert in Calgary - Decemer 29, 2011
- Unapproved tattoo operators ordered to cease practice; clients require testing - September 14, 2011
- Flood Water Precautions - May 27, 2011
- Disinfecting Private Water Supplies After Flooding - May 27, 2011
- Cleaning the House After a Flood - May 27, 2011
- Cistern Disinfection and Cleaning - May 27, 2011
- Shock Chlorination Procedure for Contaminated Wells - May 27, 2011
- Well and Cistern Water Testing - May 27, 2011
- Infectious Syphilis/Sexually Transmitted Infections (STI) - May 26, 2011
Inactive Advisories: South Zone
- Boil Water Advisory lifted for Village of Barons - May 8, 2019
- Boil-water Advisory lifted for Village of Barons - March 29, 2019
- Boil Water Advisory issued for areas of Lethbridge County Lifted - February 22, 2019
- Boil Water Advisory lifted for Town of Oyen (February 8, 2019)
- Blue-green algae (cyanobacteria) bloom advisory issued for Chin Reservoir - October 12, 2018
- Precautionary air quality advisory lifted in Alberta - September 27, 2018
- Boil water advisory lifted for Lethbridge North County - September 22, 2018
- Boil Water Advisory issued for Lethbridge North County - September 18, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Berry Creek Reservoir - August 23, 2018
- Precautionary air quality advisory issued for Southwest Alberta - August 2, 2018
- Boil Water Advisory lifted for Ridge Park Campground - August 1, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Bullshead Reservoir - July 31, 2018
- Boil Water Advisory issued for Ridge Park Campground - July 26, 2018
- Blue-green algae (cyanobacteria) bloom advisory issued for Murray Lake Reservoir - July 17, 2018
- Blue-green algae (Cyanobacteria) bloom advisories lifted - South Zone - November 1, 2017
- Precautionary air quality advisory lifted for South Zone - November 21, 2017
- UPDATE: Additional products potentially contaminated with Hepatitis A - September 6, 2017
- Hepatitis A found in Western Family pineapple product - September 2, 2017
- Precautionary Air Quality Advisory issued for South Zone of Alberta Health Services - July 16, 2017
- Water Quality Advisory lifted for Milk River at Writing-On-Stone Provincial Park - August 11, 2017
- Information on Bovine Tuberculosis - South Zone - November 23, 2016
- Contaminated water advisory lifted for Milk River at Writing-on-Stone Provincial Park - September 13, 2016
- Protect yourself against rabies, report wild animal bites - August 15, 2016
- Contaminated water advisory lifted for Golden Sheaf Park Beach – Rattlesnake Lake - July 15, 2016
- Blue-green algae advisories lifted in South Zone - November 3, 2015
- Air Quality Advisory lifted for South Zone - September 1, 2015
- Contaminated water advisory lifted for Milk River at Writing-on-Stone Provincial Park - August 28, 2015
- Air Quality Advisory lifted for Medicine Hat-area - July 2, 2015
- Air Quality Advisory lifted for Lethbridge area - July 2, 2015
- Heat Advisory issued for South Zone - June 26, 2015
- Precautionary Air Quality Advisory lifted for Lethbridge area - May 29, 2015
- Contaminated water advisory lifted for Milk River at Writing-on-Stone Provincial Park - August 29, 2014
- Boil Water Advisory lifted for Picture Butte - February 22, 2014
- Tattoo operation clients require testing - August 7, 2013
- Flood Updates and Resources - June 20, 2013
- Salmonella outbreak in southwertern Alberta - December 24, 2012
- Precautionary fire smoke advisory lifted for southwest Alberta - September 11, 2012
- Contaminated water advisory lifted for Milk River at Writing-on-Stone Provincial Park - August 3, 2012
- Unapproved tattoo operation closed; clients require testing - February 6, 2012
- Chickenpox can be difficult to spot - December 1, 2011
- Unapproved tattoo operators ordered to cease practice; clients require testing - September 14, 2011
- Contamination advisory lifted for Milk River at Writing-on-Stone Provincial Park - August 19, 2011
- Unapproved piercing operation closed; clients require testing - August 9, 2011
- Flood Water Precautions - May 27, 2011
- Disinfecting Private Water Supplies After Flooding - May 27, 2011
- Cleaning the House After a Flood - May 27, 2011
- Cistern Disinfection and Cleaning - May 27, 2011
- Shock Chlorination Procedure for Contaminated Wells - May 27, 2011
