Is Mount Zion, IL tap water safe?
The short answer
1 of the 3 utilities serving Mount Zion has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records: Mount Zion.
Mount Zion, which serves the most people here, has 1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 74.5 ppb, above the legal limit.
The water from Mount Zion is moderately hard, typically 105 mg/L (6.1 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 Mount Zion’s ZIP codes, from EPA’s estimates.
- Open report
Mount Zion
Illinois · serves 5,833 people · about 2,300 in Mount Zion
1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 74.5 ppb, above the legal limit. Hardness: moderately hard, typically 105 mg/L (6.1 grains per gallon).
8 health-based violations since 2016
- Open report
Decatur
Illinois · serves 76,122 people · about 320 in Mount Zion
Nothing in its records is above a health goal. Hardness: hard, 130 mg/L (7.6 grains per gallon).
No health-based violations since 2016
- Open report
Long Creek Township PWS
Illinois · serves 7,850 people · under 100 in Mount Zion
2 results above the health goal. The worst: Arsenic at 2.4 ppb, above the health goal. Hardness: moderately hard, 78 mg/L (4.6 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 Mount Zion’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Water testing near Mount Zion
The 2 labs Illinois certifies closest to Mount Zion, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Key Laboratory Services, Inc.
Monticello, IL · about 23 miles
Certified for bacteria
Water Lab (EJ Water Coop)
Dieterich, IL · about 61 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 Mount Zion: 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 Mount Zion
Other towns in Macon County with a page of their own.
What to do next
- Read Mount Zion’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water