100 test strips and 2 bacteria tests in every kit

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  • Know what's in your water: the test kit with 16 readings per strip, 100 strips and 2 bacteria tests
  • One strip, 16 readings: pH, hardness, hydrogen sulfide, iron, copper, lead, manganese, total chlorine, free chlorine, nitrate, nitrite, sulfate, zinc, fluoride, sodium chloride and total alkalinity
  • Dip, wait, compare: two seconds in the water, hold it flat for 15 seconds, match the pads to the chart
  • Test the tap before you drink it: a hand holding a strip over a glass of tap water
  • 2 bacteria tests included: fill the jar, shake for 20 seconds, read it after 48 hours

1 / 5

4.7 from 204 reviews

Shield Water Test Kit

Know what is in your water before you drink it. One strip gives 16 readings in 15 seconds, and two bacteria tests cover what a strip can't see.

test strips
100
readings per strip
16
bacteria tests
2
months of shelf life
24
  • Lead, nitrate, chlorine, hardness, pH and 11 more, on one strip.
  • Two bacteria tests for coliform bacteria, including E. coli.
  • No lab and nothing to mail. Dip, wait, compare with the chart.
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    Shield Water Test Kit 4.7 from 204 reviews

    16 things one strip tells you

    Each pad on the strip changes color for one reading. Hold it next to the chart on the bottle and read down the line.

    • pH
    • Hardness
    • Hydrogen sulfide
    • Iron
    • Copper
    • Lead
    • Manganese
    • Total chlorine
    • Free chlorine
    • Nitrate
    • Nitrite
    • Sulfate
    • Zinc
    • Fluoride
    • Sodium chloride
    • Total alkalinity
    • Plus 2 separate bacteria tests: fill the jar, shake, and read the color after 48 hours
    Everything in the kit laid out: bottle of strips, two bacteria test jars, a sealed pouch, a test tube and three strips

    Everything is in the kit

    • 100 test strips in sealed pouches of 25, so opening one keeps the rest fresh.
    • 2 bacteria tests in their own jars, for coliform bacteria including E. coli.
    • A test tube to collect the sample, and the color chart printed on the bottle.
    • Instructions that fit on one page.

    When to test

    • After a boil-water notice
    • Well water, every spring
    • After a flood or a water main break
    • Stored water and rain barrels
    • A new home or a rental
    • Pool and spa water

    Dip. Wait. Compare.

    No batteries, no app, nothing to mail to a lab.

    1. Dip a strip for 2 seconds

      Tap water, well water, a rain barrel or a pool. Take the strip out and shake off the excess.

    2. Hold it flat for 15 seconds

      Keep the pads level so the colors don't run into each other.

    3. Compare with the chart

      Match each pad to the color chart on the bottle. If a reading worries you, filter the water or get a lab test.

    The Shield Survival Straw standing on a rock by a creek

    Test first. Then filter.

    The test kit tells you what is in the water. The Survival Straw takes out bacteria and protozoa, with no power and no chemicals. Most people order them together.

    See the Survival Straw

    Before you buy

    How accurate is a strip?

    A strip is a screening tool. It shows whether a reading is in a normal range or not. For a legal or medical decision, confirm with a certified lab.

    How do the bacteria tests work?

    Fill the jar to the line, shake it for 20 seconds and leave it for 48 hours. The color of the liquid tells you whether coliform bacteria are present.

    How long do the strips keep?

    24 months sealed. The strips come in four foil pouches of 25, so opening one pouch doesn't expose the rest.