Has anyone done a Ward labs water test recently?

[Gabriel Weisz]

Has anyone done a Ward labs water test recently?

I'm just curious and might do one if nobody else has.

Gabe

[Gabriel Weisz]

I just got my results back from Ward Labs - this is from a water sample from Monday from my house in downtown Bethesda

pH 7.4
Electrical Conductivity, mmho/cm 0.31
Cations / Anions, me/L 2.8 / 2.5
Total Dissolved Solids TDS Est, ppm 185

Sodium, Na 13 
Potassium, K 3
Calcium, Ca 32.0
Magnesium, Mg 7
Total Hardness, CaCO3 109
Nitrate, NO3 N 0.90
Sulfur, SO4 S 13
Chloride, Cl 28
Carbonate, CO3 < 1
Bicarbonate, HCO3 51
Total Alkalinity, CaCO3 42
Total Phosphorus, ppm P 0.35
Iron, Fe 0.01
Lead, ppm Pb 0.0004

[dgud...@gmail.com]

Gabe,

This is great, thanks for sending, probably an accurate profile for anyone on Potomac water, which is generally harder than Patuxent. Interestingly all of the main brewing ions are lower than the average that WSSC shows in their 2024 tap water analysis (the most recent one I could find), except the sulfate numbers that are higher than the maximum measured that year. Here’s a map of Potomac vs Patuxent if anyone is curious whether this profile would be reflective of their water source.

Thanks,

Dan

On Jun 5, 2026, at 9:31 AM, Gabriel Weisz <gabe...@gmail.com> wrote:



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[Helen English & Dan Kluckhuhn]

Remember that there will be variability in water minerals because we draw from surface water (rivers) which changes due to rainfall, runoff, etc.

Dan

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