Westfield, Union County
Water treatment in Westfield, NJ
Westfield's water comes from New Jersey American Water's Raritan system, which draws on the Raritan and Millstone rivers, the Delaware & Raritan Canal, and 98 wells. Its 2025 report covers PFAS and disinfection in detail but leaves out one number many homeowners want: hardness.
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Water quality
What's in Westfield's water
From New Jersey American Water, Raritan system's latest annual water quality report. Your own test shows what reaches your tap.
New Jersey American Water, Raritan system
2025 test results · public water system NJ2004002
- Where it comes from
- 98 wells and 7 surface intakes on the Millstone and Raritan rivers and the Delaware & Raritan Canal, plus the Brunswick, Stockton, Passaic and other aquifers.
- Disinfectant
- Chloramines for river water and chlorine for well water. Residuals in the pipes ranged from 0.02 to 4 ppm, with a highest running average of 1.2 ppm.
- Hardness
- Not listed in the report. We measure it at your tap during the water test.
- PFAS
- PFOA up to 7 ppt and PFOS up to 6 ppt, within New Jersey's limits (14 and 13). Federal limits of 4.0 ppt each take effect in April 2029.
- Lead
- 2 ppb at the 90th percentile; none of the 54 homes tested was over the action level.
What it means in Westfield
PFAS within the state limit
The Raritan system's highest PFOA result in 2025 was 7 ppt and its highest PFOS result 6 ppt. New Jersey allows 14 and 13; the federal limits of 4.0 ppt each begin in April 2029.
No added fluoride
New Jersey American Water's 2022 Raritan report listed Westfield among the towns that receive water without added fluoride.
Hardness isn't in the report
The 2025 Raritan report doesn't publish a hardness figure, so for Westfield homes we measure it during the in-home test instead of guessing.
Our systems
The systems Westfield homes usually need
Whole-Home Carbon Filter
City-water homes bothered by chlorine but not hard water
Details about the Whole-Home Carbon Filter
Tankless Alkaline RO
Replacing bottled water for drinking and cooking
Details about the Tankless Alkaline RO
Complete Home System
City-water homes that want every tap and appliance protected at once
Details about the Complete Home System
- Free installation
FAQ
Westfield water questions
Can't find what you're looking for? Call (856) 276-5310. A real person picks up.
Who supplies Westfield's water?
New Jersey American Water, through its Raritan system, public water system NJ2004002.
Is Westfield water treated with chlorine or chloramines?
Both are used on the Raritan system: chloramines for river water and chlorine for well water. In 2025 the residual in the pipes ranged from 0.02 to 4 ppm.
Does a Westfield home need a water softener?
Test first. The utility doesn't report hardness for the Raritan system, so we check it at your kitchen tap during the free water test and only recommend a softener if the number calls for one.
Water quiz
Find the right system for your home
Answer five quick questions and we'll recommend a water treatment solution for your home. Then book your free water test and quote.
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- Prefer to talk? Call (856) 276-5310