Cu
1.3× the limitCopper
1.69mg/L
Each block = 1.3 mg/L federal action level
EPA SDWIS (Lead & Copper Rule) · sampled 2021Evidence
City water report · 2026
Is Troy Tap Water Safe? 2026 Water Quality Report
Short answer: Copper (90th percentile) is above its federal limit; lithium sits above a screening level. Troy serves 16,962 residents.
Listed match
TROY serves Troy
EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.
- Source
- Groundwater
Source: EPA SDWIS 2026Q2.
- TROYThis reportIL1191000 · 16,962 served
What stands out
One result above the action level
The bar is drawn in blocks of the 1.3 mg/L federal action level, so the length shows how far above it the result sits.
Coverage by group
32 results on record- PFAS (forever chemicals)1 detected · 28 not detected
- Metals & lead1 above · 1 not detected
- Disinfection by-productsNot monitored
- Other1 above
Every detected result
3 detected results, by distance from their limit
TROY (EPA PWSID IL1191000) delivers groundwater to 16,962 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
- Copper (90th percentile)EPA SDWIS (Lead & Copper Rule) · 20211.3 mg/L federal action level1.69mg/LAbove limit
- LithiumEPA UCMR 5 · 202410 µg/L EPA health reference level (screening, not a legal limit)10.9µg/LAbove screening
- Perfluorobutanesulfonic acid (PFBS)EPA UCMR 5 · 20242,000 ng/L EPA health advisory (screening, not a legal limit)3.9ng/LWithin reference
29 other contaminants tested, none detected
- 11Cl-PF3OUdS
- 4:2 FTS
- 6:2 FTS
- 8:2 FTS
- 9Cl-PF3ONS
- ADONA
- HFPO-DA (GenX)
- NEtFOSAA
- NFDHA
- NMeFOSAA
- PFBA
- PFDA
- PFDoA
- PFEESA
- PFHpA
- PFHpS
- PFHxA
- PFHxS
- PFMBA
- PFMPA
- PFNA
- PFOA
- PFOS
- PFPeA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lead (90th percentile)
Track record
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
Not in this recordDisinfection by-products weren't monitored in this dataset
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
What you can do
Test first, then treat what was found
- 01 · TestTest your own tap
A tap test can confirm levels at your home before you choose treatment.
Certified labHow to test your tap → - 02 · PFASReverse osmosis, or carbon certified for PFAS
PFBS 3.9 ng/L, below the 2000 ng/L EPA health advisory
NSF/ANSI 58 or 53, with PFBS named on the listingTreatment for PFAS → - 03 · Treat Copper (90th percentile), LithiumDepends on the contaminant
Copper (90th percentile) 1.69 mg/L, above the 1.3 mg/L federal action level; Lithium 10.9 µg/L, above the 10.0 µg/L EPA health reference level
The certifier's listing for each named contaminantTreatment for Copper (90th percentile), Lithium →
Test your own tap
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Screening: quick check, not lab-grade
Watersafe Drinking Water Test Kit
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
- Turnaround: Minutes; the bacteria test can take up to 48 hours
What it can't tell you: Each test gives a yes/no or a rough range, not a lab number, and it cannot detect PFAS or arsenic.
Lab-certified results
ETR Labs Basic Water Quality Test Kit
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
- Analyzed by Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638
- Turnaround: 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
When your results arrive, read them here →
Commercial
No certified match for these concerns yet
Each card names which Troy findings its current certification covers, and which it doesn't.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
No product in our catalogue has verified certification for these concerns yet.
Questions
Frequently asked questions
Is Troy tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Troy, PFAS were detected below their limits. TROY (PWSID IL1191000) has a Purity Score of 72/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap.
Who provides tap water in Troy?
TROY (PWS ID IL1191000) is the public water system on record for Troy, Illinois, serving about 16,962 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Troy get its drinking water?
Groundwater (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Troy's water?
In EPA's UCMR 5 testing (2024-09-09 to 2025-03-04), PFBS was detected at 3.9 ng/L, below the 2,000 ng/L EPA health advisory.
Is there lead in Troy's tap water?
Lead is not in Troy's current published record. Lead usually enters from a building's own pipes and fixtures, so a certified home test is the way to know yours.
What does the latest Troy water report show?
PurityMap's current record for Troy holds 32 findings: 2 above a reference, 1 detected within the reference and 29 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
Follow this water
Follow Troy's water
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Sources and dataAll 32 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Copper (90th percentile) | 1.69 mg/L | 1.3 mg/L federal action level | Above the listed reference | 2021–2021 monitoring period | Lead & Copper Rule 90th-percentile: TROY (IL1191000) |
| Lithium | 10.9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorobutanesulfonic acid (PFBS) | 3.9 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
29 other contaminants tested — none detected
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2026–2028 monitoring period (still open) | Lead & Copper Rule 90th-percentile: TROY (IL1191000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-09 to 2025-03-04 | UCMR5 Analytical Results: TROY (IL1191000) |
- Result
- 1.69 mg/L
- Benchmark
- 1.3 mg/L federal action level
- Status
- Above the listed reference
- Sampled
- 2021–2021 monitoring period
- Result
- 10.9 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Above the referenced health-based guidance value
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorobutanesulfonic acid (PFBS)
- Result
- 3.9 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Within the referenced health-based guidance value
- Sampled
- 2024-09-09 to 2025-03-04
29 other contaminants tested — none detected
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- Result
- < 5 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2026–2028 monitoring period (still open)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Result
- < 6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Result
- < 20 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoro-3-methoxypropanoic acid (PFMPA)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoro-4-methoxybutanoic acid (PFMBA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoroheptanoic acid (PFHpA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorohexanesulfonic acid (PFHxS)
- Result
- < 3 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorohexanoic acid (PFHxA)
- Result
- < 3 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorooctanesulfonic acid (PFOS)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoropentanoic acid (PFPeA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-09-09 to 2025-03-04
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify; a non-detect is not a guarantee of zero.
UCMR5 Analytical Results
UCMR5 Analytical Results: TROY (IL1191000)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: TROY (IL1191000)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Something off with your water's smell, color or taste?
Start with the hot-or-cold tap check. Where Troy reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Troy: not detected (90th percentile, 2026–2028 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.
Copper: 1.69 mg/L (90th percentile, 2021 monitoring period). The federal action level is 1.3 mg/L.
ZIP codes in Troy
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.