Customer results
Microplastic test kit reviews.
Filter photos, not star ratings. The microplastic test kit is new and the verified-review count is small. Rather than display fabricated stars in the meantime, we publish the actual filter results from real samples — our own and customers', with consent. The pink particles on the membrane are the review. Submit yours below.
No fabricated rating shown. Star ratings will display here once enough verified customer reviews accumulate. We will never display a manufactured aggregate score; the methodology is documented below.
Real filter results
The photos below are unaltered. Each shows a single 25mm membrane filter from one 100 mL sample, photographed under the kit's 450nm blue LED through an orange long-pass filter on a phone camera.
One-year-old plastic water bottle (SmartWater)
100 mL from a bottle that sat in a car for a year
Filter so loaded it was hard to count individual particles
Full writeup →
Customer tap-water filter
100 mL cold tap, US municipal supply
Visible pink fluorescent particles across the disc face
Reference baseline
100 mL distilled water control
Near-blank filter — fewer than 5 particles
More result writeups at /tested — every teardown we've run, with the actual filter photos.
How we collect reviews
Where reviews come from. After a customer runs the test and uploads their filter photo, we send a follow-up email with a review prompt. We do not incentivize reviews with discounts, kit credits, or referral bonuses — that biases the population toward people who got something free in exchange.
What we verify. Each review is tied to a real order (Stripe transaction ID), which means we can confirm the reviewer actually has the kit. We don't publish reviews without a verifiable purchase.
What we publish. The review text, the reviewer's first name and last initial, the date, and (with consent) the filter photo and what was tested. We never edit the substance of a review; the only changes are for length and to remove personally identifying information.
Negative reviews. When a customer reports a problem — a damaged kit, a confusing instruction, a count they didn't expect — we publish that too. A reviews page that only shows the good ones is a marketing page; this is supposed to be a record.
Leave a review
The simplest path: email hello@thewatertest.com with your kit batch number (printed on the side of the box), what you tested, what you found, and — if you're willing — your filter photo. We'll reply within a business day and confirm before publishing anything.
If you uploaded your result through the in-kit photo workflow, you'll also get a review-prompt email after your count comes back. Either path works.
FAQ
Are the reviews on this page real?
Yes. We publish customer results with consent, and we don't pay for reviews or incentivize them with discounts. Where the page shows a count or a filter photo, it came from a real customer or from our own internal testing — the latter is labeled. We do not display fabricated star ratings; the Product schema's aggregateRating only populates once enough verified customer reviews exist.
How do I leave a review of the microplastic test kit?
After you run your test and upload your filter photo to thewatertest.com, you'll get a follow-up email with a review link. You can also email hello@thewatertest.com with your result, your kit batch number, and what you tested — we'll add it (with your consent) to this page.
Where can I see the actual filter photos from customer tests?
On this page (the gallery section below), on the per-filter teardown blog posts at /tested, and on the specific brand pages (Aquafina, Dasani, Fiji, Brita, etc.). Every image is a real filter from a real sample, photographed under the kit's 450nm blue LED with the orange long-pass filter on a phone camera.
Is The Water Test reviewed by independent publications yet?
Not as of mid-2026. The product is new and the at-home microplastic testing category is small. We've been mentioned in citizen-science contexts and in podcast appearances; press coverage is a current effort. When independent reviews land, we'll cite them here.
What's the most useful review someone has left?
The most useful aren't single counts — they're before/after comparisons. "My Brita output had ~30% fewer particles than my unfiltered tap." "My reverse osmosis was effectively zero." "The bottled water I switched to was 3x denser than the tap I stopped trusting." Those are the reviews that change behavior, because they're the question the customer was actually trying to answer.