Ontario · Home health · checked September 28, 2026

Well water testing in Chatham-Kent

Chatham-Kent is a large, mostly rural municipality. If yours is, here's how testing works in Ontario.

Filling a water-sample bottle at a farmhouse kitchen tap with the aerator removed, snowy fields and a barn outside

Private wells in Chatham-Kent

Some rural areas

Testing cost

Bacteria free (Public Health Ontario)

Test for

Bacteria yearly or more

Extended panels

Nitrate, metals, more

How Chatham-Kent is built

Chatham-Kent's houses by when they were built Ten house shapes, one for each tenth of Chatham-Kent's 37,400 houses. Before 1961: 42%, 1961–1990: 39%, 1991–2000: 9%, 2001 or later: 10%. Older houses glow hotter.
  • Before 1961 42%
  • 1961–1990 39%
  • 1991–2000 9%
  • 2001 or later 10%
Each house stands for one in ten of Chatham-Kent's 37,400 houses (single-detached, semi-detached, row and duplex), drawn by when it was built. The glow shows the usual pattern: older houses tend to be leakier and less insulated. Snowfall scales with heating degree-days. Sources: Statistics Canada 2021 Census (table 98-10-0233-01), NRCan HOT2000 climate data.

Wells in Chatham-Kent

Chatham-Kent is a large, mostly rural municipality.

How testing works in Ontario

Free bacteria testing through Public Health Ontario labs: pick up a kit at a PHO lab or your public health unit and drop it back off. Chemistry (nitrate, sodium, metals) goes to a licensed private lab for a fee. Local health units recommend testing at least three times a year: spring, summer and fall.

What to test for

  • Bacteria (total coliforms and E. coli): at least once a year, and after flooding, heavy rain or work on the well.
  • Nitrate, especially near farmland or septic systems.
  • Metals and naturally occurring contaminants such as arsenic, uranium or manganese when a well is new and every few years after, depending on local geology.

Our well water guide.

Well water testing in Chatham-Kent: common questions

Is well water testing free in Ontario?

Free bacteria testing through Public Health Ontario labs: pick up a kit at a PHO lab or your public health unit and drop it back off. Chemistry (nitrate, sodium, metals) goes to a licensed private lab for a fee. Local health units recommend testing at least three times a year: spring, summer and fall.

How often should I test my well?

For bacteria, at least once a year and after flooding, heavy rain or well work; many health units recommend more often. Test chemistry when the well is new and every few years after.

Are private wells common in Chatham-Kent?

Chatham-Kent is a large, mostly rural municipality.

Well water testing near Chatham-Kent

Ask about well water testing in Chatham-Kent

Tell us your postal code and what you’re dealing with. We’ll reply with the right kind of certified professional or lab for your area, and which programs apply.