Is Norwalk Tap Water Safe? 2026 Water Quality Report
Short answer: No measured result is above a legal limit. Norwalk City PWS serves 17,466 residents.
NORWALK CITY PWS serves Norwalk
Your water bill or annual water quality report names your actual supplier.
- Source
- Surface water
- NORWALK CITY PWSThis reportOH3901111 · 17,466 served
One detected result
NORWALK CITY PWS (EPA PWSID OH3901111) delivers surface water to 17,466 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.
- Perfluorobutanoic acid (PFBA)EPA UCMR 5 · 2023No federal or state limit; shown for transparency10.2ng/LDetected · no limit
30 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
- PFBS
- PFDA
- PFDoA
- PFEESA
- PFHpA
- PFHpS
- PFHxA
- PFHxS
- PFMBA
- PFMPA
- PFNA
- PFOA
- PFOS
- PFPeA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lithium
- Lead (90th percentile)
Coverage by group
31 results on record- PFAS (forever chemicals)1 detected · 28 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other1 not detected
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.
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.
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
PFBA 10.2 ng/L detected (no federal or state limit)
NSF/ANSI 58 or 53, with PFBA named on the listingTreatment for PFAS →
No certified match for these concerns yet
Each card names which Norwalk 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.
Frequently asked questions
Is Norwalk tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Norwalk, PFBA 10.2 ng/L was detected, with no federal or state limit. NORWALK CITY PWS (PWSID OH3901111) has a Purity Score of 100/100 (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 Norwalk?
NORWALK CITY PWS (PWS ID OH3901111) is the public water system on record for Norwalk, Ohio, serving about 17,466 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Norwalk get its drinking water?
Surface water (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Norwalk's water?
Yes. In EPA's UCMR 5 testing (2023-01-24 to 2023-10-04), PFBA was detected at 10.2 ng/L. It has no federal or state limit, so PurityMap shows it without grading it. No PFAS with a limit was detected.
Is there lead in Norwalk's tap water?
Lead is not in Norwalk'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 Norwalk water report show?
PurityMap's current record for Norwalk holds 31 findings: 1 detected with no limit and 30 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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Sources and dataAll 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 10.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
30 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| 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 | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-24 to 2023-10-04 | UCMR5 Analytical Results: NORWALK CITY PWS (OH3901111) |
- Result
- 10.2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2023-01-24 to 2023-10-04
30 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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2023–2025 monitoring period
- Result
- < 9 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
Perfluorobutanesulfonic acid (PFBS)
- Result
- < 3 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluoroheptanoic acid (PFHpA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluorohexanesulfonic acid (PFHxS)
- Result
- < 3 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
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
- 2023-01-24 to 2023-10-04
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluorooctanesulfonic acid (PFOS)
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluoropentanoic acid (PFPeA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2023-01-24 to 2023-10-04
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: NORWALK CITY PWS (OH3901111)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: NORWALK CITY PWS (OH3901111)
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 Norwalk City PWS reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Norwalk City PWS: not detected (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
ZIP codes in Norwalk
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.