Is Johnston City, IL Tap Water Safe to Drink?
Johnston City, IL tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Contaminants including lithium have been detected at or below guideline thresholds.
Where Does Johnston City Get Its Water?
Water in Johnston City, IL is provided by 2 public water systems: JOHNSTON CITY and CORINTH PWD.
How Is Johnston City Tap Water Treated?
Treated water is disinfected using calcium hypochlorite and free chlorine. Treatment includes conventional treatment (coagulation, flocculation, and filtration), membrane filtration and slow sand filtration.
What's in Johnston City Tap Water?
The following contaminants were detected most frequently in Johnston City public water systems. All detected levels fall at or below EPA health guidelines in this dataset.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| PFTrDA | 0.007 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.0056 µg/L | — | 1 ZIP | Within guideline |
| 11Cl-PF3OUdS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| HFPO-DA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Johnston City
Current EPA monitoring data for Johnston City shows contaminant levels within guideline thresholds across all ZIP codes in this dataset. As with all public water systems, sensitive populations may choose to use a certified filter for additional peace of mind.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Johnston City Tap Water
Is Johnston City tap water safe to drink?
Johnston City tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Sensitive populations may still choose to use a certified filter as a precaution.
What contaminants are in Johnston City tap water?
The most commonly detected contaminants in Johnston City water systems include: lithium, PFTrDA, PFBA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Johnston City get its drinking water?
Johnston City receives water from 2 public water systems, including JOHNSTON CITY.
Do I need a water filter in Johnston City?
Current data does not show guideline exceedances in Johnston City. A certified filter can still reduce trace contaminants and improve taste for households that prefer filtered water.
How often is Johnston City tap water tested?
Public water systems in Johnston City are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2023-12-11.
Tap water reports by ZIP in Johnston City
- 62951 - Johnston City tap water report Some concern
Water utilities serving Johnston City, IL
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- JOHNSTON CITYSome concern
Also covers / overlaps with
- Herrin precinct, IL · Township
- Lake Creek precinct, IL · Township