Laurentian Valley Business Study: Survey Closes June 30, 2019Public Works Tenders 2019Public Meeting on Ottawa River Water Levels and Spring 2019 Flooding to be held on Saturday June 22, 2019Notice of Construction: HWY 148 CPR Overhead Bridge RemovalRequest for Proposal - Operational ReviewMedia Advisory - Algonquin Trail SurveyINFORMATION FOR LAURENTIAN VALLEY RESIDENTS ALONG THE OTTAWA RIVER - PROJECTED WATER LEVEL RATE OF DECREASE INFORMATION AS OF 5 PM JUNE 6, 2019Thank You! To All Who Assisted the Township with the 2019 Flooding EventFLOOD IMPACTED RESIDENTS AND PROPERTY OWNERS ARE REQUESTED TO REGISTER TO ASSIST THE TOWNSHIP WITH NEEDS ASSESSMENT FOR WHERE HELP IS REQUIRED WITH FLOOD CLEAN-UPOttawa River boating ban lifted on May 30 2019 by the Federal Minister of Transporation in sections near Laurentian Valley and other areasNotice of Application of Zoning By-law Amendment File No. Z2019-03 and Public Meeting of June 18, 2019News Release - IMPORTANT INFORMATION FOR FLOOD IMPACTED RESIDENTS AND PROPERTY OWNERS ON REGISTRATION FOR ASSISTANCECleanup Kits from the Red Cross Available for Laurentian Valley Residents Impacted by FloodingAttention Business Owners! Sign up for our Business StudyVolunteer with the Township of Laurentian ValleyOpen Air & Recreational Fire Ban LiftedPUBLIC NOTICE - FLOOD 2019 UPDATEMNRF Flood Warning Extended for Pembroke District - Issued on May 9, 2019Community Improvement PlanImportant Press Release from the Ottawa River Regulating Committee Issued on May 3 2019Notice of Public Meeting - Proposed Building Permit Fees ChangesNews Release from County of Renfrew: Support Available for Residents Impacted by the FloodMedia Release - Laurentian Valley Flood UpdatePublic Notice - Ministry of Transportation Communication on Hazley Bay and Des Allumettes BridgesNotice that the Township of Laurentian Valley has declared an Emergency due to Flooding on April 27, 2019Renfrew County and District Health Unit Media Release on April 26, 2019 - Reminder to make sure your drinking water well is safe before using in flooded areasAvailability of Sandbags and Sand Supplies in Laurentian ValleyCatch the Ace Lottery Every Thursday in Laurentian Valley!Sandbagging TipsNotice of Application of Zoning By-law Amendment File No. Z2019-02 and Public Meeting of April 16, 2019Notice of April 2, 2019 Public Meeting for a Community Improvement Plan for the Township of Laurentian ValleyPetawawa, Pembroke and Laurentian Valley - Receiving Waste Collection Schedule SoonSpecial Council Meeting

Domestic Well Water Quality

Water quality is a term used to describe the chemical, physical, and biological characteristics of water, usually in respect to its suitability for a particular purpose. Although scientific measurements are used to define a water's quality, it's not a simple thing to say that "this is good water ," or "this is bad water ." After all, water that is perfectly good to wash a car with may not be good enough to serve as drinking water. When the average person asks about water quality, they probably want to know if the water is good enough to drink, cook, or wash with. Or they want to know if the quality of our natural waters are suitable for aquatic plants, fish and animals.

Ground water may contain some natural impurities or contaminants, even with no human activity or pollution. Natural contaminants can come from many conditions in the watershed or in the ground. Because water is such an excellent solvent it can contain lots of dissolved chemicals. And since ground water moves through rocks and subsurface soil, it has a lot of opportunity to dissolve substances as it moves, such as magnesium, calcium and chlorides. For that reason, ground water will often have more dissolved substances than surface water will. Some ground water naturally contains dissolved elements such as arsenic, boron, selenium, or radon. Whether these natural contaminants are health problems depends on the amount of the substance present.

In addition to natural contaminants, ground water is often polluted by human activities such as:

  • Improper use of fertilizers, animal manures, herbicides, insecticides, and pesticides. (gardens and flower beds too close to the well)
  • Improperly built or poorly located and/or maintained septic systems for household wastewater.
  • Leaking or abandoned aboveground/underground storage tanks and piping.
  • Surface spills of fuels and oils
  • Storm-water drains that discharge chemicals to ground water
  • Improper disposal or storage of wastes.
  • Improper disposal of household hazardous wastes such as paint, solvents, cleaners etc.
  • Road salts

Noticeable Problems


  • Scale or scum from calcium or magnesium salts in water.
  • Unclear/turbid water from dirt, clay salts, silt or rust in water.
  • Green stains on sinks or faucets caused by high acidity.
  • Brown-red stains on sinks, dishwasher, or clothes in wash points to dissolved iron in water.
  • Cloudy water that clears upon standing may have air bubbles from poorly working pump or problem with filters.


  • Salty or brackish taste from high sodium content in water.
  • Alkali/soapy taste from dissolved alkaline minerals in water.
  • Metallic taste from acidity or high iron content in water.
  • Chemical taste from industrial chemicals or pesticides.


  • A rotten egg odor can be from dissolved hydrogen sulfide gas or certain bacteria in your water. If the smell only comes with hot water it is likely from a part in your hot water heater.
  • A detergent odor and water that foams when drawn could be seepage from septic tanks into your ground water well.
  • A gasoline or oil smell indicates fuel oil or gasoline likely seeping from a tank into the water supply.
  • Methane gas or musty/earthy smell from decaying organic matter in water

Unnoticeable Problems

Many serious problems can only be found by laboratory testing of water.

  • bacteria
  • heavy metals and minerals
  • nitrates
  • radon
  • pesticides, herbicides and other chemicals

Separation Distances

Because of all the above noted forms of contamination it is important to locate wells a safe distance from these possible sources or locate the sources of contamination as far as possible from existing wells. Regulation 903 prescribes that water wells be located as follows;

  • at least 15 metres (50 feet) for drilled wells with watertight casings that extend 6 metres (20 feet) or more below ground level.
  • at least 30 metres (100 feet) for all other wells.