Don’t take our word for it. Read the lab results.
Every production lot of Puretap water is microbiologically tested by an independent, ISO 17025-accredited laboratory, and a comprehensive chemistry analysis is performed annually. We publish both certificates here, in full, so you can check the numbers yourself.
We don’t test our own water and call it safe.
Puretap water is produced in a sealed clean room, handled only with food-grade stainless steel equipment, and verified by an outside laboratory before it leaves our facility in Mississauga. Here is what stands behind every bottle.
Produced in a sealed clean room
Filled in a controlled environment with recirculated, bacteria-free air — never on an open warehouse floor.
Verified by an independent lab
Mérieux NutriSciences runs a per-lot microbiological test on every production lot, and a comprehensive chemistry analysis annually. The results you see here are theirs, not ours.
Date-coded and traceable
Every bottle is date-coded to its production run, so any batch can be matched back to its lab certificate.
Two independent tests, one standard
Puretap’s third-party verification operates in two layers — a comprehensive chemistry analysis run annually, and a focused microbiological test run on every production lot. Together they cover both the chemistry and the safety of the water in your bottle.
Comprehensive Chemistry Analysis
A full instrument analysis run once per year by Mérieux NutriSciences. It covers:
- Full ICP-MS metal screen — 30+ elements including lead, arsenic, mercury, cadmium and uranium
- USP/NF Class 1, 2 & 3 residual solvents — 60+ analytes
- Dissolved solids, nitrites and pH
These are the certificates in the next section.
Per-Lot Microbiological Test
A focused microbiological analysis run on every production lot by the same accredited lab. It covers:
- Coliform bacteria (SMEWW 9222J, Filtration)
- Escherichia coli
- Heterotrophic Plate Count
Lot-coded to a specific date and production run — sample shown below.
Annual Comprehensive Analysis
Below are the most recent annual chemistry certificates for our distilled, demineralized and deionized water. Each shows a snapshot of the screen — the full PDF lists every metal and solvent measured. The companion per-lot microbiological certificate appears in the next section. Spring water and product-specific reports are available on request.
Morning Mist Distilled
| Analyte | Result |
|---|---|
| Total dissolved solids | < 5 mg/L |
| Lead | < 0.0001 ppm |
| Arsenic | < 0.0001 ppm |
| Mercury | < 0.00005 ppm |
| Nitrites | < 0.2 ppm |
| Heavy metals screen | Pass |
Full ICP-MS mineral screen plus Class 1, 2 & 3 residual solvents — all below detection limits.
Demineralized
| Analyte | Result |
|---|---|
| Total dissolved solids | < 5 mg/L |
| Lead | < 0.0001 ppm |
| Arsenic | < 0.0001 ppm |
| Mercury | < 0.00005 ppm |
| Nitrites | < 0.2 ppm |
| Heavy metals screen | Pass |
Full ICP-MS mineral screen plus Class 1, 2 & 3 residual solvents — all below detection limits.
Deionized
| Analyte | Result |
|---|---|
| Total dissolved solids | < 5 mg/L |
| Lead | < 0.0001 ppm |
| Arsenic | < 0.0001 ppm |
| Mercury | < 0.00005 ppm |
| Nitrites | < 0.2 ppm |
| Heavy metals screen | Pass |
Full ICP-MS mineral screen plus Class 1, 2 & 3 residual solvents — all below detection limits.
Sample per-lot microbiological certificate
The certificate below is a representative example of the microbiological test run on every Puretap production lot. The lot code printed on each bottle ties it back to a specific test like this one.
Demineralized Tank, post-ozone — Apr 15, 2026
| Analyte | Result |
|---|---|
| Coliform (SMEWW 9222J, Filtration) | < 1 CFU/100mL |
| E. coli | < 1 CFU/100mL |
| Heterotrophic Plate Count | < 1.0 CFU/mL |
A focused safety check — the comprehensive chemistry screen for this product line is the annual certificate above.
A full screen — not a single number on a label
Each certificate covers far more than a basic purity check. The laboratory runs a complete instrument analysis across four categories.
Full mineral & metal screen (ICP-MS)
Over 30 elements — including lead, arsenic, mercury, cadmium, chromium and uranium — measured to parts-per-billion sensitivity.
Residual solvents — Classes 1, 2 & 3
More than 60 organic solvents screened against USP/NF standards. All results fall below reporting limits.
Dissolved solids & nitrites
Total dissolved solids confirmed at under 5 mg/L; nitrites screened by colourimetric method.
pH measurement
Each batch’s pH is recorded — distilled water naturally reads slightly acidic as it absorbs carbon dioxide from the air.
Held to Canadian standards
Puretap water is manufactured to the standards set by Health Canada and is produced in a facility subject to inspection by the Canadian Food Inspection Agency (CFIA).
- Results sit well within — and in most cases far below — the limits in Health Canada’s Guidelines for Canadian Drinking Water Quality.
- Quality-control staff monitor production against government and industry regulations.
- A lab report is available for the water filled on any given production day.
An independent, accredited laboratory
Mérieux NutriSciences — Silliker Canada Co., Markham Laboratory
Puretap’s water is analyzed by Mérieux NutriSciences (Silliker Canada Co.), an independent food and water testing laboratory in Markham, Ontario. The analyses are performed under ISO 17025-accredited methods and signed off by the laboratory director. Puretap does not influence or perform these results — that independence is the point. The certificates on this page are reproduced exactly as the lab issued them.
Safety Data Sheets
Distributors, pharmacies and industrial customers can download a current Safety Data Sheet (SDS) for each Puretap water type below.
Distilled Water — Safety Data Sheet
16-section GHS / WHMIS format · SDS No. PT-DW-001 · Rev. 1.0Deionized Water — Safety Data Sheet
Not regulated as a dangerous good · CANUTEC emergency referenceDemineralized Water — Safety Data Sheet
Not regulated as a dangerous good · CANUTEC emergency referenceWant your water tested?
Whether you’re a business with quality-control requirements or a household curious about what’s in your tap, well or process water, Puretap can have your sample analyzed at our laboratory. Tell us what you’d like tested and we’ll come back with a quote.
Questions about a specific batch?
Every Puretap bottle is date-coded and traceable to its production run. If you’d like the lab report for a particular batch — or a report for a product not listed here — our team is happy to help.
Lab certificates are reproduced as issued by Mérieux NutriSciences (Silliker Canada Co.). Results reflect the samples tested and are provided for customer information. Distilled water is naturally low in minerals; pH may read slightly acidic due to dissolved carbon dioxide from the air.