Is Fairmont, IL tap water safe?
The short answer
1 of the 2 utilities serving Fairmont has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records: Joliet.
Lockport, which serves the most people here, has 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 65 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from Lockport is very hard, typically 541 mg/L (31.6 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 Fairmont’s ZIP codes, from EPA’s estimates.
- Open report
Lockport
Illinois · serves 23,100 people · about 1,400 in Fairmont
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 65 ppb, above EPA’s health benchmark. Hardness: very hard, typically 541 mg/L (31.6 grains per gallon).
No health-based violations since 2016
- Open report
Joliet
Illinois · serves 160,000 people · about 380 in Fairmont
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 54.7 ppb, above EPA’s health benchmark. Hardness: very hard, typically 224 mg/L (13.1 grains per gallon).
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Lockport’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Fairmont
The 3 labs Illinois certifies closest to Fairmont, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Will County Health Department
Joliet, IL · about 5 miles
Certified for bacteria
ETP Labs, Inc.
Willowbrook, IL · about 14 miles
Certified for bacteria
Eurofins Built Environment Testing Central-Chicago
Naperville, IL · about 17 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 Fairmont: 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 Fairmont
Other towns in Will County with a page of their own.
What to do next
- Read Lockport’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water