Drinking water quality · 2024
· Verified
What's in Carmel, IN tap water
42 contaminants were measured in the Carmel, IN water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 42
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- IN
state-level CCR
Where your water comes from · EPA SDWIS
Carmel, IN's drinking water comes from ground water, drawn from 20 sources.
Source
20ground water
- WELL · 20
Treatment
6treatment plants
- TREATMENT PLANT #7 (PLANT 1B)
- TREATMENT PLANT #5A
- TREATMENT PLANT #6 (PLANT 1A)
- + 3 more
Distribution
7storage units
Source: EPA SDWIS facilities inventory. Methodology.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Treatment technique violationHealth-based1 violation on record · most recent Jan 2024resolved
- Maximum contaminant level exceededHealth-based1 violation on record · most recent Oct 2021resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 51 ug/LAverageSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 29 ug/LAverageSystem-wide | None set | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.66 mg/L90th percentileSystem-wide | 1.3 mg/LMCLG | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 4.7 ug/L90th percentileAt the tap | 0 ug/LMCLG | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.35 mg/LAverageSystem-wide | 2 mg/LMCLG | Within the limit |
| NickelA metal from natural deposits and industrial discharge. | Not detected ug/LMaximumMaximum of All Samples | None set | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 42 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | 0.11 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| LithiumA naturally occurring element found in some groundwater. | 9.57 ug/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 0.0051 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 126.8 mg/LAverageSystem Wide [Avg] | None set | Detected — no federal limit |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 12 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 2 mg/LAverageSystem-wide | 4 mg/LMRDLG | Within the limit |
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.99 mg/LAverageSystem Wide [Avg] | 4 mg/LMCL | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 1.4 ng/LHighest single sampleSystem-wide | None set | Within the limit |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 1 ng/LHighest single sampleSystem-wide | None set | Within the limit |
| PFAS | Not detectedMaximumMaximum of All Samples | None set | None detected |
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | 0.73 ng/LAverageSystem-wide | 2000 ng/LPublic health goal | Detected — no federal limit |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | 0.99 ng/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | 1.6 ng/LAverageSystem-wide | None set | Detected — no federal limit |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | 3.9 ng/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 4.1 ng/LHighest single sampleSystem-wide | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Nitrate Nitrite | 2.05–2.05 mg/LRangeSystem-wide | 10 mg/LMCL | Within the limit |
| Chromium | 0.8 ug/LAverageSystem-wide | None set | Within the limit |
| Xylenes Total | 3 ug/LMaximumMaximum of All Samples | 10 ug/LMCLG | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageSystem Wide [Avg] | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 1.1 mg/LAverageSystem-wide | 10 mg/LMCLG | Within the limit |
| ChlorideA naturally occurring salt compound. | 72 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 94 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.7 pCi/LAverageSystem-wide | 0 pCi/LMCLG | Within the limit |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 2 pCi/LAverageSystem-wide | 0 pCi/LMCLG | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 7.4 pCi/LMaximumSystem-wide | 0 pCi/LMCL | Detected — no federal limit |
VOCs & pesticides
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.04 NTUAverageSystem-wide | 100 NTUTreatment technique | Within the limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 366 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.7AverageSystem-wide | None set | Detected — no federal limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 4.1 mg/LAverageSystem-wide | None set | Detected — no federal limit |
+By source (2)— Months Monitored, System Wide (Avg)
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Cryptosporidium | 0.5AverageSystem-wide | None set | Detected — no federal limit |
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | Not detectedAverageSystem-wide | 0MCLG | Detected — no federal limit |
| Giardia lamblia | 4.7AverageSystem-wide | None set | Detected — no federal limit |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.1 %AverageSystem Wide [Avg] | None set | Detected — no federal limit |
Source: Carmel, IN's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about Carmel, IN's water
+Is Carmel, IN tap water safe to drink in 2024?
Every one of the 42 contaminants measured in Carmel, IN's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Carmel, IN tap water?
42 contaminants were measured in Carmel, IN's 2024 Consumer Confidence Report, spanning metals, pfas ("forever chemicals"), and inorganic chemicals. 15 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Carmel, IN's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Carmel, IN's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.
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