Is Charleston, IL tap water safe?
The short answer
1 of the 3 utilities serving Charleston has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records: Charleston.
Charleston, which serves the most people here, has 2 results above the health goal. The worst: Lead at 3.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Charleston is moderately hard, 86 mg/L (5 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 Charleston’s ZIP codes, from EPA’s estimates.
- Open report
Charleston
Illinois · serves 17,286 people · about 1,000 in Charleston
2 results above the health goal. The worst: Lead at 3.0 ppb, above the health goal. Hardness: moderately hard, 86 mg/L (5 grains per gallon).
1 health-based violation since 2016
- Open report
Eastern Illinois University
Illinois · serves 5,500 people · under 100 in Charleston
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Embarras Area Water District
Illinois · serves 3,750 people · based in Charleston
1 result above the health goal. The worst: Lead at 1.4 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 Charleston’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 Charleston
The 3 labs Illinois certifies closest to Charleston, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Water Lab (EJ Water Coop)
Dieterich, IL · about 39 miles
Certified for bacteria
Key Laboratory Services, Inc.
Monticello, IL · about 42 miles
Certified for bacteria
Pace Analytical (former McCoy & McCoy Labs)
Farmersburg, IN · about 42 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 IllinoisZIP codes in Charleston
Which ZIP codes are in Charleston: 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 Charleston
Towns nearby with a page of their own.
What to do next
- Read Charleston’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