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Phosphorous Levels 

Mazinaw Lake phosphorous levels have been monitored by the Mississippi Valley Conservation Authority (MCVA) since 1998.  In 2016, they separated the reports between north and south lake basins. The reports can be found at https://mvc.on.ca/reports/

In the Fall of 2022, the Mazinaw Property Owners Association (MPOA) submitted inquiries to North Frontenac Council and the Mississippi Valley Conservation Authority (MVCA) regarding phosphorus levels in Mazinaw Lake. In response, Council received a Technical Memorandum from the MVCA Senior Biologist, dated September 28, 2022 responding to this inquiry with an update on the sampling programs on Mazinaw Lake, as well as the approach and methodology used in their analysis. A copy can be found at the following link on page 25: https://northfrontenac.civicweb.net/document/30969/.  The MVCA concluded:

 “Mazinaw Lake does not have either an upward or downward trend in total phosphorus concentrations and the lake has maintained a fairly stable and low nutrient status since 2003. However Eurasian Water-Milfoil appears to be present throughout the lake;

The MVCA further recommends in order to protect against increasing phosphorus levels, the Township and MPOA:

• Continue to implement municipal planning policies regarding the protection of shoreline vegetation and development setbacks;

• Explore opportunities for shoreline enhancement and run-off mitigation;

• Implement stewardship outreach and activities; and

• Communicate the importance of clean, drain, dry protocols.

The MPOA has followed through on these recommendations by establishing the Mazinaw Blue Lakes Committee, which promotes opportunities for shoreline enhancement and run-off mitigation; implements stewardship outreach and activities, and we have communicated the importance of clean, drain, dry protocols by installing signage at all high traffic boat launch locations throughout the Lake.

 

Septic Tanks 

Septic tanks should be pumped and inspected every 2-3 years to ensure it is in proper working order and does not contain too much sludge that may overload the tank and contribute to leaks. Pump frequency depends on the tank size, frequency of use and nature of use, but in general, most need to be emptied every few years.To keep your septic system functioning properly, avoid using antibacterial soaps since antibacterial soaps can kill the helpful bacteria septic systems rely on to process and decompose waste. Also, directly buffering your septic tile bed with native flowering plants and shrubs can assist in nutrient uptake. Find more useful tips here: Nutrients, Sprays & Chemical Applicants Guide.

 

In most cases, repairing a septic system will cost between $2,000 and $25,000. Replacing one can cost about $6,000 to $40,000—depending on the system’s size and location - so it’s best to take care of what you have, especially since you’re legally responsible for doing so. Septic systems last for 20 to 30 years (and sometimes longer) if they’re well maintained.

Here are 10 easy ways to keep your septic system in great shape.

  1. Know where it is. It may sound obvious, but it’s important to know your system’s location and have easy access to its tank and leaching bed. Avoid driving, parking, or building on or near any part of the system.
  2. Conserve water. If you’ve been to a cottage, you’ve probably seen a note along these lines: If it’s pee, let it be. If it’s brown, flush it down. Owners aren’t just being cute: Excessive water use overloads septic tanks and prevents solids from settling on the bottom. The solids get pushed into the leaching bed where they cannot be filtered out effectively. The clogged soil will not accept more water and backups can occur. To save water: Flush only when necessary, use a low-flow toilet, install high-efficiency taps and shower-heads, tell guests to be conservative with their water use, run your dishwasher and washing machines less often, and fix any dripping taps.
  3. Flush organic only. If it isn’t human waste or toilet paper, don’t flush it. Flushing paper towels, disposable diapers and wipes, condoms, sanitary napkins, tampons, facial tissues, coffee grounds, cigarette butts, grease, kitty litter, and such will quickly fill your tank and clog the system. Even if a product’s packaging claims that it’s flushable, don’t.
  4. Seek biodegradable cleaners. Avoid using heavy-duty cleaners (especially those with bleach), toilet pucks, and antibacterial soaps. These products kill the bacteria that keep the system running effectively. Use biodegradable products for tasks that involve frequent water use (such as washing dishes).
  5. Avoid chemicals. Never put paints, solvents, pesticides, gasoline, or other toxic chemicals in your system. Don’t flush old medication either. Not only will these kill the beneficial bacteria in the tank, they will also end up in the groundwater.
  6. Keep trees and shrubs away. The roots of trees, especially aggressive species such as willows and poplars, will travel as far as needed to get to water. Roots can plug up and wrap around distribution pipes in the leaching bed, causing all sorts of damage. Don’t plant deep-rooted trees or shrubs on your leaching bed or within five metres of it, and consider relocating those already there.
  7. Plant shallow-rooted species. A good way to avoid soil erosion is to plant native grasses over the leaching bed. Don’t overwater, as any excess may interfere with the soil’s ability to treat waste. Doug Joy, general manager for the Ontario Rural Wastewater Association, recommends planting periwinkle or other ground cover, as these plants require very little irrigation, if any. Nutrients, Sprays & Chemical Applicants Guide
  8. Insulate distant systems. If your septic system is located far away from the cottage, insulate the pipe running from the building to the septic tank to prevent freezing during the winter. Joy recommends packing rigid foam insulation around the pipe, something many property owners he knows have done recently. To insulate the entire system, let the grass grow long over the tank, increase soil cover, or add a layer of mulch. According to Joy, if a system is constructed properly and buried deeply, freezing is unlikely.
  9. Beware of storms. If you own a system with a submersible pump, installing a lightning arrestor helps protect it from power surges that can ruin your septic’s inner workings. To avoid system overload, ensure that your eavestrough and foundation drains are sending water away from the leaching bed. If it gets too soggy, it won’t absorb enough oxygen or neutralize the waste.
  10. Inspect and pump. Have your system inspected and its contents pumped out by a professional every three to five years (or when the tank’s volume is about one-third full). You can open the hatch to look inside, but never stick your head in or enter the tank. The gases inside are not only smelly, they’re dangerous. If you inhale them, you could pass out and fall in, and inhalation alone can kill you - so leave the inspections to the professionals. While inspections are discretionary in parts of Ontario, a recent amendment to the Ontario Building Code (OBC) makes system inspections mandatory in other locations. Properties that are affected include those along the Lake Simcoe shoreline and watershed, and other vulnerable areas. To find out if you’re required to arrange an inspection, check with your municipality. For more information, visit the Ontario Ministry of Municipal Affairs and Housing website, and/or contact your municipality.