No open health-based violations on EPA record in the last 10 years.
Serves about 5,676 people (2,075 connections) with surface water from its own intake.
From EPA's record for OH4102811. PurityMap is independent of Toronto PWS.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2018 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to October 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanesulfonic acid (PFBS) | 3.5 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoropentanoic acid (PFPeA) | 3.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| 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 | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-10-14 | UCMR5 Analytical Results: TORONTO PWS (OH4102811) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 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.
Get PurityMap updates about this water system.
Follow this water →Toronto PWS's phone number on EPA record is 740-537-2428. Its mailing address is 416 CLARK ST, PO BOX 189, TORONTO, OH 43964.
According to EPA's record, Toronto PWS uses surface water from its own intake.
EPA's record shows 1 health-based violation for Toronto PWS in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Toronto PWS's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Toronto PWS. Its phone number on EPA record is 740-537-2428. Its mailing address on EPA record is 416 CLARK ST, PO BOX 189, TORONTO, OH 43964. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.