Short answer: No measured result is above a legal limit; lithium sits above a screening level, and a past health-based violation (E. coli) is on record. Mid-Ohio WSD serves 10,256 residents.
Your water bill or annual water quality report names your actual supplier.
MID-OHIO WSD - CHRISMAN AVENUE WTP (EPA PWSID OH4900712) delivers groundwater to 10,256 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.
1health-based violation in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score.
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.
Every filing is listed; the Track record score counts at most one per contaminant per year.
Resolved
to Resolved
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
lead 2.1 µg/L, below the 15 µg/L action level
Lithium 12 µg/L, above the 10.0 µg/L EPA health reference level
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
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
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
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 →
Each card names which London 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.
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For London, no regulated PFAS were detected in EPA's 2024 testing; the lead 90th-percentile result was 2.1 µg/L against the 15 µg/L action level; one health-based violation is on record (E. coli). MID-OHIO WSD - CHRISMAN AVENUE WTP (PWSID OH4900712) has a Purity Score of 96/100 (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.
MID-OHIO WSD - CHRISMAN AVENUE WTP (PWS ID OH4900712) is the public water system on record for London, Ohio, serving about 10,256 people. Confirm the utility on your water bill before acting on a specific finding.
Groundwater (primary source of record in EPA SDWIS).
None of the 29 PFAS in EPA's UCMR 5 testing (2023-04-24 to 2024-01-10) was detected. "Not detected" means below the lab's reporting limit, not proven zero.
MID-OHIO WSD - CHRISMAN AVENUE WTP's most recent lead 90th-percentile result (2023–2025) was 2.1 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
The federal SDWIS record lists a health-based violation for MID-OHIO WSD - CHRISMAN AVENUE WTP within about the last ten years: E. coli (2022). The findings above show each one's status.
PurityMap's current record for London 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.
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| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 12 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| E. coli | = | Federal MCL | Above the listed reference | 2022 | EPA SDWIS Violations & Enforcement: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Lead (90th percentile) | 2.1 µg/L | 15 µg/L federal action level | Below the listed reference | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| 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 | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-24 to 2024-01-10 | UCMR5 Analytical Results: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712) |
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)
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: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712)
US EPA SDWIS
State SDWIS Compliance Record
EPA SDWIS Violations & Enforcement: MID-OHIO WSD - CHRISMAN AVENUE WTP (OH4900712)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Start with the hot-or-cold tap check. Where Mid-Ohio WSD reported something related, it's shown below.
Lead at Mid-Ohio WSD: 2.1 µg/L (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.