Water Quality Report · Updated May 12, 2026
CITIZENS WATER OF WESTFIELD, LLC
CITIZENS WATER OF WESTFIELD, LLC delivers tap water graded C (74/100) by TapWaterSafety.org. The utility serves approximately 61,493 residents in CARMEL, Indiana using groundwater. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 317-429-3569.
Is CARMEL tap water safe to drink?
CITIZENS WATER OF WESTFIELD, LLC delivers tap water that earns a grade of C (74/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 61,493 residents in CARMEL, drawing from groundwater.
Public testing data identifies 7 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Bromodichloromethane, Dibromochloromethane, Chloroform, Radium, combined (-226 and -228). 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.
Quick actions for CARMEL residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CITIZENS WATER OF WESTFIELD, LLC.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 11.0 ppb, 183x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 10.5 ppb, 70x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 6.15 ppb, 62x above the EWG health guideline of 0.1 ppb.
Contact CITIZENS WATER OF WESTFIELD, LLC
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 CARMEL
Filters matched to the specific contaminants in this water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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 74/100 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 |
11.0 ppb | 0.06 | — | — | — | — | — | 183× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
10.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 70× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
6.15 ppb | 0.1 | 60.0 | 60 | — | — | — | 62× over |
| Bromodichloromethane Disinfection byproduct |
2.98 ppb | 0.06 | — | — | — | — | — | 50× over |
| Dibromochloromethane Disinfection byproduct |
1.85 ppb | 0.1 | — | — | — | — | — | 19× over |
| Chloroform Disinfection byproduct |
5.25 ppb | 0.4 | — | — | — | — | — | 13× over |
| Radium, combined (-226 and -228) Radiological |
0.62 pCi/L | 0.05 | 5.0 | — | — | — | — | 12× over |
| Bromoform Disinfection byproduct |
0.392 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
197.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
5.67 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.00214 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.77 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Chloromethane Other |
0.00429 ppb | 2.69 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.22 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.0607 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.587 ppm | — | 4.0 | 1.5 | 1.5 | — | — | 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.
CITIZENS WATER OF WESTFIELD, LLC service area
This water system serves 1 community in Hamilton County, Indiana. Click any city for its dedicated tap water quality page.
Find the right filter for CARMEL water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.