Puronics Micromax 8500 four-stage reverse osmosis system with storage tank, installed under a kitchen sink by Hydrology Water Solutions

Drinking water · under-sink reverse osmosis · flagship

Micromax
8500

The RO we put under the sink when the concern is the stuff you can’t taste — PFAS, lead, arsenic. Certified under the standard that actually covers PFAS (NSF/ANSI 53), plus 58, 42, 401 and 372. Look up the model before you sign.

NSF/ANSI 53 · PFOA/PFOSNSF/ANSI 58NSF/ANSI 42NSF/ANSI 401NSF/ANSI 372WQA Gold Seal
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Micromax 8500 · our install
Certified for PFOA/PFOS · NSF/ANSI 53Lead · arsenic · fluoride · TDS · NSF/ANSI 58WQA Gold SealPuronics · Franklin ElectricOur own techsCertified for PFOA/PFOS · NSF/ANSI 53Lead · arsenic · fluoride · TDS · NSF/ANSI 58WQA Gold SealPuronics · Franklin ElectricOur own techs

What this means for you

If any of this sounds familiar,
this is the fix.

Buying bottled water or a pitcher filterSame taste from your own tap — no cases to carry, nothing to refill.
Coffee, tea and ice taste offTaste and odor — certified under NSF/ANSI 42.
PFAS in the news, or on your utility reportThis is the model certified for PFOA/PFOS reduction — NSF/ANSI 53.
Older house, lead or arsenic worriesLead and arsenic reduction, certified under NSF/ANSI 53 and 58.

What’s actually in your water

Manatee County / City of Bradenton. Two systems here: Manatee County water is Lake Manatee Reservoir blended with groundwater, disinfected with chloramine; City of Bradenton water comes from the Bill Evers Reservoir and ran 550 mg/L TDS and 288 mg/L sulfate in its 2025 report. 6–16 grains hard at the tap (county-reported range). No PFAS detected in the county’s UCMR5 round. For the tap, this is the one certified for PFAS — and for lead, arsenic and TDS.

Want your exact address? Type your zip — 30 seconds. Or skip it — the free in-home test measures it for you.

WHAT IT REDUCES — AND WHAT PROVES IT

Every claim,
with its paperwork.

“Certified” means a third party tested it to a numbered standard and audits the factory every year. Here’s which rows are certified, which are the manufacturer’s design claims, and which are neither.

ReducesYou’d noticeBasis
PFOA / PFOS (PFAS) · VOCsNo taste, no smell — a test finds themCERTIFIED · NSF/ANSI 53
Lead · arsenic · chromium · cadmium · copper · seleniumMetals you can’t tasteCERTIFIED · NSF/ANSI 58
Fluoride · barium · radium · turbidity · TDSDissolved solids, cloudinessCERTIFIED · NSF/ANSI 58
Chlorine taste & odorThe glass tastes like the poolCERTIFIED · NSF/ANSI 42
BPA · estrone · ibuprofen · naproxen · nonylphenolEmerging compoundsCERTIFIED · NSF/ANSI 401
Lead-free materialsThe system adds no leadCERTIFIED · NSF/ANSI 372
Hardness for the whole houseSpots, scale, dry skin at every tapNOT THIS SYSTEM → Hydronex / Defender
CERTIFIED — WQA Gold Seal, on wqa.orgDESIGN CLAIM — manufacturer states itNOT THIS SYSTEM — we’ll tell you what does
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Dedicated reverse osmosis drinking-water faucet at a kitchen sink, installed by HydrologyUnder the sink · our install

THE EDGE · PFAS IS 53, NOT 401

The right standard
for PFAS.

Half the industry quotes the wrong standard for PFAS. NSF/ANSI 401 covers emerging compounds like pharmaceuticals; NSF/ANSI 53 is the health-contaminant standard that includes PFOA/PFOS. The 8500 carries both — and Sarasota County’s Carlton plant tested PFOA at 3.8 ppt against a 4.0 limit in 2025. Compliant, and close to the line.

Manatee tested clean for PFAS in the last federal round. We’ll tell you that at the test, too — the RO is still the answer for taste, lead and the things that never had a smell.

Which one is mine? Take the free test

Tested your own water? A TDS meter or test strip can be misleading — here’s what the numbers really mean →

What your neighbors say

4.7★ from 212 Google reviews.

★★★★★
“I cannot say enough amazing things about this company and system! We had three companies come out and Hydrology stood out on every level.”
— Denise W. · Google review
★★★★★
“We’ve had our system now a month and absolutely love it. My wife is a hair beautician with over 30 years of experience and definitely can tell the difference with the water.”
— Charles P. · Google review
★★★★★
“Wow, I can definitely feel a difference in my hair, skin, and when I wash my hands. I knew getting a water softener was a priority and I’m so glad I decided to go with Hydrology.”
— Renee C. · Google review

Every review is on our Google profile — read all of them there. We don’t cherry-pick; we just answer the phone.

Do I need the 8500 or the 7000?

If PFAS or lead is the worry, the 8500 — it’s certified to NSF/ANSI 53. If nitrates are the worry (common on wells), the 7000 is certified for nitrate/nitrite reduction. If it’s taste, either one. We’ll say which at the test.

Does RO waste water?

Yes — an RO sends rinse water to the drain as part of how it works. It’s a drinking-water system, not a whole-house one, so the volume is small. We’ll show you the numbers.

Can I check the certification myself?

Yes. wqa.org, find products, search Puronics, find Micromax 8500. The standards are listed next to it.

Does the Micromax 8500 really reduce PFAS?

Yes — it’s independently certified under NSF/ANSI 53 for PFOA/PFOS (the “forever chemicals”), along with VOCs. That certification is what separates it from an ordinary under-sink filter, and you can look the model up on wqa.org.

How is it different from a cheap RO from a store?

Certification and reduction range. The 8500 is certified across NSF/ANSI 58, 53, 401 and 42 to reduce a long, specific list — lead, arsenic, PFAS, VOCs, certain pharmaceutical and personal-care compounds, TDS and chlorine taste — and we install it and service it. A boxed store unit rarely carries that breadth of certification.

What exactly does it reduce or remove?

Per its listings: dissolved metals and solids such as arsenic, lead, chromium, selenium, radium, fluoride and TDS (NSF/ANSI 58); PFOA/PFOS and VOCs (NSF/ANSI 53); certain pharmaceutical and personal-care compounds (NSF/ANSI 401); and chlorine taste and odor (NSF/ANSI 42). Each one is an independent, verifiable certification — and the ledger above shows which is which.

How often do the filters need changing?

On a schedule we go over at install, based on your water and use — and Platinum Care members get it done for them, so the system keeps performing to its certified spec.

SPECIFICATIONS

The numbers.

From the Puronics spec sheet and warranty — nothing from memory.

5NSF/ANSI standards · look them up
53The PFAS standard · certified
4Stages · sediment, carbon, RO, VOC carbon
0%Financing available*
TypeUnder-sink reverse osmosis with storage tank and dedicated faucet
StagesSediment · carbon block (CTO) · RO membrane · VOC carbon block
PowerHousehold water pressure — no electricity
CertificationWQA Gold Seal — NSF/ANSI 42, 53, 58, 401, 372
FiltersConsumable cartridges on a change schedule we set with you
ManufacturerPuronics / Franklin Water Treatment LLC (Franklin Electric) · Livermore, CA

WHAT’S INCLUDED

Everything,
in writing.

  • 01Free in-home water test before you buy
  • 02Installation by our own technicians — faucet, tank, drain line done right
  • 03Puronics manufacturer warranty — terms handed to you at install
  • 04Certification you can look up yourself on wqa.org, by model
  • 05The filter-change schedule, in writing
  • 06Our phone number — the installers answer it

Straight talk: we say “reduce or remove” on purpose. On most tests after an install we don’t see any of those residuals at all — but a certification measures reduction to a standard under test conditions, not a promise of zero on every drop, so we don’t over-promise. Your water, pressure and maintenance schedule all matter, and we set the filter-change schedule with you.

Manufacturer literature

The full Puronics brochure for this system — specifications, dimensions and certifications, unedited.

Download the PDF →Every brochure we have: Product Brochures
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“I cannot say enough amazing things about this company and system! We had three companies come out and Hydrology stood out on every level. This company is very professional, answered every question we had and even gave us time to think without “pressuring” us to buy! Our water is fabulous the taste and feeling it leaves on skin I am wondering how I have went so long without this system! ”

- Denise W.

“We’ve had our system now a month and absolutely love it and we can see and feel the difference immediately. My wife is a hair beautician with over 30 years of experience and definitely can tell the difference with the water which is important for hair and skin. Highly recommend this company and look forward to many years of clean, soft and healthy water!”

- Charles P.

“Wow I can definitely feel a difference in my hair, skin, and when I wash my hands. I knew getting a water softener was a priority and I’m so glad I decided to go with Hydrology. I’m thoroughly impressed with the company and the product!”

- Renee C.
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★★★★★ 4.7 · Manatee · Sarasota · Pinellas · Hillsborough · Charlotte