Test, diagnose, and fix your well water — iron, hardness, bacteria, sulfur, and more. Safe water for your family starts here.
Well water in Renfrew County is generally excellent — but it varies significantly from one property to the next. The Canadian Shield geology that gives us deep, protected aquifers also produces water with naturally elevated iron, hardness, and sometimes other characteristics that benefit from treatment. The good news: every water problem has a solution.
The most common water quality issue in Renfrew County well water. Signs include reddish-brown or black staining in sinks, toilets, and laundry, metallic taste, and orange-tinted water. Even small amounts of iron (above 0.3 mg/L) cause noticeable staining. Manganese causes dark brown/black staining and has health concerns at higher levels.
Solution: Iron filter (greensand, birm, or air injection), often combined with a water softener for the best results.
Hard water — water high in calcium and magnesium — is common throughout Renfrew County. Symptoms include scale buildup on fixtures and appliances, film on shower glass, reduced soap lathering, and shortened appliance lifespan (water heaters, dishwashers). Hard water isn't a health risk but significantly impacts daily life and appliance longevity.
Solution: Water softener (ion exchange system). Most effective and efficient treatment for hardness.
Total coliform and E. coli can enter wells through surface water intrusion, shallow wells with poor casing, or contamination events (flooding, nearby animal operations). You cannot taste, smell, or see bacterial contamination — testing is the only way to know. This is a serious health concern, especially for children, elderly, and immune-compromised individuals.
Solution: UV ultraviolet disinfection system (most reliable), chlorine injection, or well shock chlorination for temporary contamination events. If contamination is persistent, well integrity inspection and possible well replacement may be needed.
That distinct rotten egg odour in your water is hydrogen sulfide gas, produced by naturally occurring sulfur bacteria in some wells. While not typically a health hazard at low levels, it makes water unpleasant and can corrode plumbing.
Solution: Aeration system or oxidizing filter. Chlorination for bacterial sulfur sources.
Nitrates enter groundwater primarily from agricultural runoff, septic systems, and natural geology. High nitrates are a particular concern for infants under 6 months (can cause "blue baby syndrome"). Rural properties near farmland or with older septic systems should test regularly.
Solution: Reverse osmosis (RO) at the point of use (drinking water tap), or whole-home nitrate-specific ion exchange. Testing first is essential to confirm levels and appropriate treatment.
Cloudy, discoloured, or sandy water may indicate sediment entering your well — often from a damaged pump screen, pump running near the bottom, or well casing issues. Can also occur seasonally in some wells.
Solution: Sediment filter (whole-home 20–50 micron filter), plus addressing the source if well-related.
Not sure what's in your water? Start with a test. We arrange certified water testing throughout Renfrew County.
Get a Water Test & EstimateBefore treating your water, you need to know what you're treating. We recommend certified lab testing through an accredited Ontario laboratory. Standard tests include:
Renfrew County Conservation Authority and the Ministry of the Environment both offer guidance on testing frequency. For most residential wells: test for bacteria annually, full mineral panel every 3–5 years, or any time water quality or taste changes.
Ion exchange systems that replace calcium and magnesium ions with sodium. Dramatically reduces scale buildup, improves soap performance, and extends appliance life. Requires periodic salt (sodium chloride or potassium chloride) top-up. Most effective treatment for hard water and moderately elevated iron.
Oxidizing filters that convert dissolved iron to a particulate form and filter it out. Various media types (greensand, Birm, Katalox, air injection/retention) suited to different iron types and levels. Can handle both ferrous (clear-water) and ferric (red-water) iron.
UV light disinfection destroys bacteria, viruses, and other microorganisms without chemicals. Highly effective, no chemical taste or smell, relatively low maintenance (annual lamp replacement). Does not remove chemical contaminants — used in combination with filtration for comprehensive treatment.
Point-of-use system typically installed under the kitchen sink. Forces water through a semi-permeable membrane, removing up to 99% of dissolved solids including nitrates, arsenic, lead, and most contaminants. Produces exceptional drinking water but treats only a limited volume (drinking and cooking use). Not practical as whole-home treatment.
Pre-filters that remove particulates, chlorine, and organics. Usually the first stage in a multi-treatment system. Carbon filters also improve taste and odour from hydrogen sulfide and organics.
Multi-stage systems that combine sediment filtration, iron removal, softening, and UV disinfection in a single treatment train. Best option for wells with multiple water quality issues. Can be customized to your specific test results.
The right treatment depends entirely on your water test results. Over-treating (installing systems you don't need) wastes money. Under-treating misses problems. Start with a proper test — your contractor will recommend only what your water actually requires.
Let a local water treatment specialist assess your well water and recommend the right solution for your home.
Get My Free Water Treatment EstimateTesting is the only reliable way. You cannot see, smell, or taste many contaminants including nitrates and some bacteria. Have your water tested at a certified Ontario laboratory at least once per year for bacteria, and every few years for a full chemical panel.
The rotten egg smell is hydrogen sulfide, usually produced by sulfur bacteria naturally present in some wells. At low levels it's generally not a health hazard but is unpleasant and can indicate broader bacterial activity. Have your water tested and the well disinfected before choosing a treatment system.
Most real estate transactions in Ontario require a water test, and results are typically disclosed to buyers. If your water has known issues, treating them before listing can significantly impact your sale. A certified water test and evidence of a properly sized treatment system add value and reduce buyer concerns.
Sediment filters: every 3–6 months. Carbon filters: every 6–12 months. UV lamps: annually. Water softener salt: every 1–4 months depending on household size and water hardness. Iron filter media: every 5–10 years depending on iron load. Your treatment provider will set you up with a maintenance schedule.