Is Swansea, IL tap water safe?
The short answer
Neither of the 2 utilities serving Swansea has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records.
IL American - East St Louis, which serves the most people here, has 2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from IL American - East St Louis is hard to very hard depending on the source, 124 to 205 mg/L (7.3 to 12 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 Swansea’s ZIP codes, from EPA’s estimates.
- Open report
IL American - East St Louis
Illinois · serves 131,368 people · about 12,600 in Swansea
2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal. Hardness: hard to very hard depending on the source, 124 to 205 mg/L (7.3 to 12 grains per gallon).
No health-based violations since 2016
- Open report
O Fallon
Illinois · serves 46,603 people · about 140 in Swansea
Nothing in its records is above a health goal. Hardness: moderately hard, 120 mg/L (7 grains per gallon).
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 IL American - East St Louis’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 Swansea
The 3 labs Illinois certifies closest to Swansea, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Teklab, Inc.
Collinsville, IL · about 11 miles
Certified for bacteria
Pace Analytical Services, LLC - Hazelwood
Hazelwood, MO · about 26 miles
Certified for bacteria
Precision Water Lab
Centralia, IL · about 48 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 Swansea: 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 Swansea
Other towns in St. Clair County with a page of their own.
What to do next
- Read IL American - East St Louis’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