Water Quality Report · Updated October 07, 2026
CICERO
CICERO delivers tap water graded D (59/100) by TapWaterSafety.org. The utility serves approximately 83,000 residents in CICERO, Illinois using surface water (purchased). The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Bromodichloromethane significantly above health guideline. For questions, the utility can be reached at 708-656-3600.
Is CICERO tap water safe to drink?
CICERO delivers tap water that earns a grade of D (59/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa9) significantly above health guideline.
The utility serves 83,000 residents in CICERO, drawing from surface water (purchased).
Public testing data identifies 13 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Bromodichloromethane, Haloacetic acids (HAA5), Trichloroacetic acid, Dibromochloromethane, Chloroform, Dibromoacetic acid, Dichloroacetic acid, Radium, combined (-226 and -228)*, Chromium (hexavalent), Nitrate*, Nitrate and nitrite*. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for CICERO (system ID IL0310510) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Lead and Copper Rule Revisions | Missed reporting | 07/02/2025 | Open |
| Lead and Copper Rule Revisions | Required treatment not met | 10/17/2024 | Open |
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2025 | Open |
| Public Notice Rule and Revised PN Rule | Other (e.g. public notice) | 02/19/2023 | Open |
| Lead and Copper Rule | Missed testing or reporting | 01/01/2026 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for CICERO residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CICERO.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 16.5 ppb, 274x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 28.4 ppb, 190x above the EWG health guideline of 0.15 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 9.25 ppb, 154x above the EWG health guideline of 0.06 ppb.
Contact CICERO
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for CICERO
Filters matched to the specific contaminants in this water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 59/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
16.5 ppb | 0.06 | — | — | — | — | — | 274× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
28.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 190× over |
| Bromodichloromethane Disinfection byproduct |
9.25 ppb | 0.06 | — | — | — | — | — | 154× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
13.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 130× over |
| Trichloroacetic acid Disinfection byproduct |
5.52 ppb | 0.1 | — | — | — | — | — | 55× over |
| Dibromochloromethane Disinfection byproduct |
5.11 ppb | 0.1 | — | — | — | — | — | 51× over |
| Chloroform Disinfection byproduct |
14.1 ppb | 0.4 | — | — | — | — | — | 35× over |
| Dibromoacetic acid Disinfection byproduct |
1.04 ppb | 0.03 | — | — | — | — | — | 35× over |
| Dichloroacetic acid Disinfection byproduct |
6.15 ppb | 0.2 | — | — | — | — | — | 31× over |
| Radium, combined (-226 and -228)* Radiological |
0.89 pCi/L | 0.05 | 5.0 | — | — | — | — | 18× over |
| Chromium (hexavalent) Heavy metal |
0.209 ppb | 0.02 | — | — | — | — | — | 10× over |
| Nitrate* Inorganic |
0.297 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| Nitrate and nitrite* Inorganic |
0.297 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.0175 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Barium* Heavy metal |
19.7 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
0.938 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.175 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.124 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.193 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.108 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.123 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione* Other |
0.175 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride* Inorganic |
0.66 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Testosterone* Other |
0.025 ppt | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CICERO service area
This water system serves 1 community in Cook County, Illinois. Click any city for its dedicated tap water quality page.
Find the right filter for CICERO water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.