Is Westmont, IL tap water safe?
The short answer
Neither of the 2 utilities serving Westmont has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records.
Westmont, which serves the most people here, has 1 result above the health goal. The worst: Lead at 8.9 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Westmont is moderately hard, 120 mg/L (7 grains per gallon). How Illinois’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Westmont’s ZIP codes, from EPA’s estimates.
- Open report
Westmont
Illinois · serves 24,161 people · nearly all in Westmont
1 result above the health goal. The worst: Lead at 8.9 ppb, above the health goal. Hardness: moderately hard, 120 mg/L (7 grains per gallon).
No health-based violations since 2016
- Open report
Oak Brook
Illinois · serves 9,400 people · about 250 in Westmont
2 results above the health goal. The worst: Lead at 0.5 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Westmont’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Westmont
The 3 labs Illinois certifies closest to Westmont, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
ETP Labs, Inc.
Willowbrook, IL · about 5 miles
Certified for bacteria
DuPage County Health Department
Wheaton, IL · about 9 miles
Certified for bacteria
Phigenics Analytical Services Laboratory
Warrenville, IL · about 11 miles
Certified for bacteria
Illinois Department of Public Health: Coliform bacteria and nitrate testing for private wells, with sample bottles from your local health department, or from the department's nearest regional office where there is none. You mail the sample to the lab, and results come back through the health department. Well Sampling for Coliform & Nitrate, Illinois Department of Public Health.
All 30 certified labs for IllinoisWhich ZIP codes are in Westmont: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Illinois Department of Public Health, certified water microbiology laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Westmont
Other towns in DuPage County with a page of their own.
What to do next
- Read Westmont’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water