Tap Water Quality Report
Tap water quality in ORLAND PARK, Illinois
Tap water in ORLAND PARK, Illinois receives a grade of C (72/100) from TapWaterSafety.org. It's served by ORLAND PARK. 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. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in ORLAND PARK's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving ORLAND PARK.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 24.4 ppb, 407x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 42.2 ppb, 281x above the EWG health guideline of 0.15 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 11.4 ppb, 190x above the EWG health guideline of 0.06 ppb.
EPA compliance record
Official U.S. EPA records for ORLAND PARK (system ID IL0312310) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2025 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for ORLAND PARK
Filters matched to the specific contaminants in ORLAND PARK's 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.
All contaminants detected in ORLAND PARK's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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 |
24.4 ppb | 0.06 | — | — | — | — | — | 407× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
42.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 281× over |
| Bromodichloromethane Disinfection byproduct |
11.4 ppb | 0.06 | — | — | — | — | — | 190× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
18.5 ppb | 0.1 | 60.0 | 60 | — | — | — | 185× over |
| Trichloroacetic acid Disinfection byproduct |
7.73 ppb | 0.1 | — | — | — | — | — | 77× over |
| Chloroform Disinfection byproduct |
24.6 ppb | 0.4 | — | — | — | — | — | 62× over |
| Dibromochloromethane Disinfection byproduct |
6.02 ppb | 0.1 | — | — | — | — | — | 60× over |
| Dichloroacetic acid Disinfection byproduct |
8.85 ppb | 0.2 | — | — | — | — | — | 44× over |
| Dibromoacetic acid Disinfection byproduct |
1.29 ppb | 0.03 | — | — | — | — | — | 43× over |
| Chromium (hexavalent) Heavy metal |
0.201 ppb | 0.02 | — | — | — | — | — | 10× over |
| Bromoform Disinfection byproduct |
0.125 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.988 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.288 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.268 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.334 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese* Heavy metal |
0.0613 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.12 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 2-propen-1-ol * Other |
0.15 ppb | — | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.075 ppt | — | — | — | — | — | — | Below guideline |
| Quinoline Other |
0.00575 ppb | — | — | — | — | — | — | Below guideline |
| Testosterone Other |
0.108 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from ORLAND PARK.