Is Rock Island, IL Tap Water Safe to Drink?
Rock Island tap water meets federal Safe Drinking Water Act standards but 1 of 2 ZIP codes show detections above EPA health guidelines, primarily for PFOA. A certified filter is recommended for households that want an additional layer of protection.
Where Does Rock Island Get Its Water?
Water in Rock Island, IL is provided by 2 public water systems: ROCK ISLAND and ROCK ISLAND ARSENAL, US ARMY.
How Is Rock Island Tap Water Treated?
Treated water is disinfected using free chlorine. Treatment includes conventional treatment (coagulation, flocculation, and filtration), granular activated carbon filtration and post-ozone biofiltration.
What's in Rock Island Tap Water?
The following contaminants were detected most frequently in Rock Island public water systems. 1 of 2 ZIP codes showed detections above EPA health guidelines.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| PFOA | 0.0046 µg/L | 0.004 µg/L | 1 ZIP | Above guideline |
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.016 µg/L | — | 2 ZIPs | Within guideline |
| PFTrDA | 0.007 µg/L | 0.007 µg/L | 1 ZIP | Within guideline |
| 8:2 FTS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Rock Island
Based on EPA monitoring data, 1 of 2 ZIP codes in Rock Island have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.
Best Filters for PFAS Water Profile
PFAS compounds are detected in this water supply. A reverse osmosis (RO) system or an activated-carbon filter specifically certified under NSF/ANSI P473 is required for reliable PFAS reduction. Standard pitcher and faucet filters without P473 certification do not remove PFAS.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Rock Island Tap Water
Is Rock Island tap water safe to drink?
Rock Island tap water meets Safe Drinking Water Act requirements but 1 of 2 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.
What contaminants are in Rock Island tap water?
The most commonly detected contaminants in Rock Island water systems include: PFOA, lithium, PFBA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Rock Island get its drinking water?
Rock Island receives water from 2 public water systems, including ROCK ISLAND.
Do I need a water filter in Rock Island?
If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.
How often is Rock Island tap water tested?
Public water systems in Rock Island 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 2023-11-07.
Tap water reports by ZIP in Rock Island
- 61201 - South Rock Island, Rock Island tap water report Some concern
- 61299 - Rock Island tap water report Higher concern
Water utilities serving Rock Island, 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.
- ROCK ISLAND ARSENAL, US ARMYAction advised
- ROCK ISLANDSome concern
Also covers / overlaps with
- Blackhawk, IL · Township
- Rock Island Arsenal, IL · CDP
- South Rock Island, IL · Township