Billerica's water report lists PFAS, and you're wondering whether your kitchen tap needs a filter. The report is the right place to start, but it describes the public system, not your faucet. A sensible order is to read the report, have your own water tested by a certified laboratory if the question matters to your household, and then compare only equipment whose exact model is certified for the PFAS claim you need. Sometimes that leads to a drinking-water filter. Sometimes it leads to another sample, or to no new equipment at all.
What Billerica's 2025 report shows
Billerica's 2025 Water Quality Report covers testing from January 1 through December 31, 2025, and names the Concord River as the public system's source. As of our August 2026 check, it reported:
- PFAS6 at 12.1 parts per trillion, with a range of 2.65 to 12.1, against the Massachusetts PFAS6 limit of 20 parts per trillion. The report marks no violation.
- PFOA at up to 5.5 parts per trillion, ranging from not detected to 5.5, in its separate UCMR5 federal monitoring table.
EPA's 2024 PFAS drinking water rule set a federal PFOA maximum contaminant level of 4.0 parts per trillion, with compliance judged on running annual averages at the sampling point rather than a single reading. The UCMR5 figure alone doesn't establish federal compliance or a violation, and the report doesn't make a federal finding either way.
Two habits make these numbers easier to read. PFAS results are in parts per trillion (ppt), not parts per million, and mixing up the units changes the meaning completely. And compare a result only with a limit for the same chemical or group: PFAS6 with the Massachusetts PFAS6 limit, PFOA with the federal PFOA limit.
A utility report summarizes testing across the whole system. It isn't a sample from your tap, and it says nothing about a private well.
Testing your own water
PFAS has to be measured by a certified laboratory. No field meter, taste test or dissolved-solids reading detects it, and there is no on-site PFAS test. The lab supplies its own containers and written collection instructions, and those instructions matter: PFAS results can be affected by materials around the sample, so don't substitute containers. Note whether the sample came from untreated water or from a tap that already has treatment. If you want to know whether existing equipment is working, the lab may ask for samples from before and after it.
Private well owners face the same rule with more at stake, since no utility is testing for them. The EPA's guidance on PFAS in private wells points owners to state guidance and certified laboratories. Our water testing service starts by settling the source, the sample tap, the reason for testing and the lab method, so the result answers the question you're asking.
Filter types that can carry a PFAS claim
Whoever you talk to, Billerica plumbers and treatment dealers should tell you the same two things before recommending a PFAS filter: get a certified lab result first, and choose a model certified for that exact PFAS claim. Three technology classes are usually evaluated.
| Technology | Typical setup | What decides whether it fits |
|---|---|---|
| Activated carbon | Under-sink cartridge, or a larger vessel where water enters the house | Carbon type, contact time, flow, capacity and replacement schedule |
| Reverse osmosis | Under-sink system with its own drinking-water faucet, a storage tank and a drain connection | Water pressure, drain access, production rate, and cartridge and membrane service |
| PFAS-selective ion exchange | Specialized resin vessel | The exact resin, competing water chemistry, capacity and how spent media is replaced |
None of these categories carries an automatic PFAS claim. A regular water softener also uses ion exchange, but it's built to remove hardness, and that doesn't make it PFAS treatment. Oxidation filters and UV systems have their own jobs, such as iron or microbial treatment when testing calls for them, and neither becomes PFAS treatment by sitting next to a filter.
Checking a certification claim
A filter can be described as reducing PFAS only if that exact model carries a current third-party certification for that exact claim. A certification on a sister model, a technology category or a retailer's summary doesn't count. Look up the full model number in the certifier's directory, such as the NSF certified products listing, and read which contaminants the listing names.
The standard number alone isn't enough. As NSF's overview of treatment standards explains, NSF/ANSI 42 covers aesthetic claims such as chlorine taste, NSF/ANSI 53 covers health-effect claims, and NSF/ANSI 58 covers reverse osmosis systems; a listing under any of them covers only the contaminants it names. Then check the listed flow rate, capacity, pressure and replacement interval against your home. A certified filter run past its capacity or above its rated flow is no longer operating under the conditions it was certified for.
A drinking-water tap or the whole house?
Point-of-use treatment, usually under the kitchen sink, focuses on the water you drink and cook with. Whole-house treatment handles water where it enters, before it branches to every fixture. That means larger equipment, more flow capacity, more space and more maintenance. A "whole-house" label says nothing about whether the model is certified for your PFAS claim, and it doesn't settle whether treating every fixture serves your goal. Other results matter too: hardness, iron, manganese, sediment or pH can call for pretreatment or change the equipment choice, and each stage needs its own purpose. Once the results are in, our test-led water treatment planning compares the narrowest setup that meets your goal with the broader option.
Installation, upkeep and price
A workable plan identifies the treated outlet, shutoffs, bypass, pipe size, pressure, drain, power and room for future cartridge or media changes. Startup follows the manufacturer's instructions, and we record the exact model and its consumables so you know what to replace. There's no universal replacement calendar; cartridge and media life depend on your water use, your incoming water and the manufacturer's rating.
We don't publish a price range, because an under-sink system and a whole-house vessel are different jobs. Jeneral Plumbing prices filtration and softener installation at a flat rate, with the equipment, startup, maintenance responsibilities, any follow-up sampling and the total disclosed for approval before work begins. A regular-hours visit carries an $80 dispatch fee — the cost of the visit, waived when you hire us for the work.
We're based in Westford, MA, and work in Billerica and other Middlesex County towns, confirming the address, the work and availability before booking. Gather your lab results, the utility report, any sample notes and the labels from existing equipment. Then Call (978) 392-7789 to talk through testing or an installation scope. If the evidence doesn't support new treatment, we'll tell you that too.
Written by Jeneral Plumbing.
This article was drafted with AI writing tools and edited before publication. AI tools did not inspect any job or validate technical conclusions.
Last updated .