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Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli Drinking Water Test Kit 21-in-1 + 2 E. coli
★★★★★ 4.4 · 3,496 reviews

Drinking Water Test Kit 21-in-1 + 2 E. coli

21 PARAMETERS
Complete home analysis of your drinking, tap and well water — detects lead, chlorine, hardness, pH, nitrate, bacteria and more in 60 seconds. Test 21 essential parameters with 120 strips and two E. coli bacteria tests included. EPA-based color chart. Results in 60 seconds, no...
$26.99
≈ $0.21 per test · 120 strips
Limit 5 per order
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✓Free US shipping over $35 · Ships in 1 business day
↩30-day money-back guarantee
The most comprehensive at-home water test kit

Test 21 essential water quality parameters in minutes — from pH and total hardness to heavy metals and harmful chemicals. With 120 test strips and two E. coli bacteria tests included, you have everything you need to understand your water and take action.

Lab-grade accuracy you can depend on
Reliable, consistent results every time
Backed by our 30-day money-back guarantee
Expertly designed and tested in the USA
WHAT'S INSIDE

Everything this kit checks

21 chemical parameters across five categories, plus 2 bacteria tests — the most comprehensive at-home kit on the market.

What's in the box
120
Water test strips
Multi-parameter strips — one dip reads pH, hardness, chlorine, metals and more.
2×
E. coli / Coliform tests
Self-sealing bacteria tests to catch microbial contamination.
Sulfate
Sulfate strips
Dedicated strips for the sulfate parameter.
2-in-1
Nitrate / Nitrite strips
Separate strips for nitrate and nitrite readings.
1
Pipette
For collecting and dosing your water sample.
21
Color chart
A printed scale for all 21 parameters, right on the bottle.
What's in the box
Heavy metals6 tests
Build up in the body over years and can harm the nervous system, kidneys and children's development.
LeadMercuryCopperIronZincManganese
Balance & disinfectants8 tests
Decide how your water tastes and how gentle it is on skin, pipes and appliances.
pHTotal HardnessTotal AlkalinityCarbonateFree ChlorineTotal ChlorineBromineCyanuric Acid
Chemical contaminants7 tests
Flag pollution from farms, industry and aging plumbing — a genuine risk for infants.
NitrateNitriteFluorideSulfateSodium ChlorideHydrogen SulfiteQAC / QUAT
+2Bacteria tests
The invisible microbial threat chemical pads can't see — the line between water that looks clean and water that's actually safe to drink.
E. coli / Coliform

What people say

★★★★★ 4.4/5 · 2,140+ reviews Prime
From AmazonVerified PurchaseReal customersPrime delivery
★★★★★
★★★★★
★★★★★
★★★★★
★★★★★
✓ Verified Purchase
Excellent Water Testing Kit

This water testing kit is very easy to use and gives fast, reliable results. I liked that it tests multiple water quality parameters, making it simple to check if my drinking water is safe.

Dainelis · July 2, 2026
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★★★★★
✓ Verified Purchase
Very handy and useful

I bought this drinking water test kit to check my home's water quality, and it works perfectly! The instructions are very clear, and the results appear quickly. I love that it includes an E. coli test.

Yailet · July 3, 2026
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★★★★★
✓ Verified Purchase
Easy Way to Check Water Quality

It comes with plenty of test strips, so you can perform multiple tests. I used it to check the water at home, and the results appeared quickly. The color chart makes it much easier to interpret each reading.

Lely · July 4, 2026
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★★★★★
✓ Verified Purchase
Complete Water Testing Kit

I've used this kit several times and I'm really impressed. It's easy to use, the instructions are clear, and the results are quick and easy to read. It gave me peace of mind about my drinking water quality.

Daniela · July 1, 2026
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*Reviews are sourced from Amazon customers. Each card links to its original Amazon review for verification.

Get results in 4 simple steps

No complicated procedures or lab expertise required. Anyone can test their water in minutes.

1 ✓
Fill a sample
Fill a sample

Fill a clean glass with the water you want to test.

2 ✓
Dip & remove
Dip & remove

Dip a strip into the sample for 2 seconds, then lift it out.

3 ✓
Wait 15–60 seconds
Wait 15–60 seconds

Lay the strip flat while the pads develop. Wait time depends on the strip.

4 ✓
Compare to chart
Compare to chart

Match each pad to the color chart to read your results.

Wait time varies by strip type — 15s, 60s or 120s (bacteria takes 48h). See full instructions →
Every parameter has its own color chart — match each pad to its own scale
pHacidic → alkaline
Free chlorinelow → high
Leadsafe → unsafe
Colors and safe ranges differ per parameter — the full chart for all 21 is printed on the bottle.

How to use

1
Dip the strip
Dip a strip into the water sample for 2 seconds, then lift it out.
2
Wait
Lay the strip flat and wait 15–60 seconds while the pads develop.
3
Compare
Match each pad to the color chart printed on the bottle.

Specifications

Parameters 21 + 2 bacteria
Strips per kit 120
Read time 60 seconds
Water types Tap · Well · Filtered
Shelf life 24 months
Made for US EPA ranges