Aquasure · Under-Sink RO Systems
Premier Series AS-PR100E 100 GPD Under Sink Reverse Osmosis System
Low PFAS concern; standard RO system with no disclosed treatment.
Reverse osmosis systems typically use carbon and membrane filters, not PFAS-treated materials. Aquasure does not claim PFAS-free status or disclose treatment details for this model.
We flunk more products than we pass. This one earned its grade. How we grade
Material
RO membrane, carbon filters, plastic housing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Premier Series AS-PR100E Osmosis System is made of, ingredients and materials
The AS-PR100E uses a semipermeable polyamide RO membrane, activated carbon pre-filters, and food-grade plastic housing and tubing (typically polypropylene or polyethylene). The membrane removes dissolved solids and contaminants but does not filter PFAS molecules efficiently on its own; the carbon stage is responsible for any PFAS reduction. Plastic housing and tubing contact cool water only (no heating), which minimizes leaching risk from the polymer matrix itself.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Bacterial or mold growth in carbon cartridges and housing
If the system sits unused for extended periods or if cartridges are not replaced on schedule, stagnant water in the carbon stage and membrane housing can support microbial growth. Proper maintenance and cartridge replacement cycles mitigate this risk.
Lead
Loose tubing connections or incorrectly seated cartridges can allow unfiltered water to bypass filtration stages. This is an installation and maintenance issue rather than a product defect, but users should verify all connections are secure and cartridges fully seated.
Source, ATSDR ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Plastic housing and tubing leaching
Polypropylene and polyethylene housing contact only cold filtered water, which poses minimal risk of BPA, phthalates, or other additives leaching under normal use. No recalls or field reports of leaching from Aquasure housings are on record.
Membrane or cartridge degradation and microparticle shedding
Polyamide RO membranes can degrade if exposed to chlorine or if cartridges are not properly stored before installation; degradation can allow particulates through. Aquasure systems typically include a carbon pre-filter to remove chlorine, and no field reports of membrane failure on this model are documented.
Heavy metals
The RO membrane effectively removes most heavy metals; this system does not introduce lead, cadmium, or other metals. Performance depends on proper pre-filter maintenance and membrane integrity.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Aquasure does not publicly disclose membrane or cartridge third-party testing, NSF certification status, or PFAS reduction claims on their product pages or marketing materials. No major product recalls or safety controversies specific to the AS-PR100E appear in public regulatory databases. The brand maintains silent stance on PFAS treatment, meaning claims should not be assumed beyond standard carbon filtration performance.
How it compares in its category
Standard residential RO systems typically use identical membrane and housing materials; the AS-PR100E 100 GPD capacity and modular cartridge design are common in the mass-market segment. Systems at this price point rarely include NSF/ANSI 58 certification (RO systems) or NSF 42/53 certification (carbon stages), which would provide independent validation. No meaningful safety differentiation exists between this product and other budget RO under-sink models in material hazard profile.
If you buy it
Replace pre-filters (sediment and carbon) every 6-12 months depending on source water quality; replace the RO membrane every 2-3 years or when flow rate drops below manufacturer specs. Ensure the system is installed on a cold-water line only and that all tubing and fittings are hand-tightened (over-tightening plastic connectors can crack housing). Store replacement cartridges in a cool, dry place away from direct sunlight to prevent plastic degradation before use. Perform a sanitization cycle after installation and before first use to clear dust and manufacturing residue.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Aquasure has made none
Formulations change between production runs, so check the current label. How we grade.
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More under-sink ro systems grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.