Perfluorooctanoic acid
4.6ng/L
Each block = 4.0 ng/L federal MCL (2024)
Short answer: PFOA is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); lithium sits above a screening level. Truckee-Donner PUD, Main serves 36,730 residents.
Your water bill or annual water quality report names your actual supplier.
The bar is drawn in blocks of the 4.0 ng/L federal MCL (2024), so the length shows how far above it the result sits.
4.6ng/L
Each block = 4.0 ng/L federal MCL (2024)
TRUCKEE-DONNER PUD, MAIN (EPA PWSID CA2910003) delivers groundwater to 36,730 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.
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.
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
PFOA 4.6 ng/L, above the 4 ng/L limit (+2 more PFAS detected)
lead 3.9 µg/L, below the 15 µg/L action level
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
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 Truckee findings its current certification covers, and which it doesn't.
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PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Truckee, PFOA 4.6 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing; the lead 90th-percentile result was 3.9 µg/L against the 15 µg/L action level. TRUCKEE-DONNER PUD, MAIN (PWSID CA2910003) has a Purity Score of 71/100 (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.
TRUCKEE-DONNER PUD, MAIN (PWS ID CA2910003) is the public water system on record for Truckee, California, serving about 36,730 people. Confirm the utility on your water bill before acting on a specific finding.
Groundwater (primary source of record in EPA SDWIS).
Yes. In EPA's UCMR 5 testing (2023-03-06 to 2023-11-06), PFOA was measured at 4.6 ng/L against a 4 ng/L federal limit. PFHxA (4.4 ng/L, below the 400,000 ng/L state limit) was also detected. PFPeA (4.6 ng/L) was also detected; it has no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
TRUCKEE-DONNER PUD, MAIN's most recent lead 90th-percentile result (2023–2025) was 3.9 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.
PurityMap's current record for Truckee holds 31 findings: 2 above a reference, 2 detected within the reference, 1 detected with no limit and 26 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 | 32 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorooctanoic acid (PFOA) | 4.6 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Lead (90th percentile) | 3.9 µg/L | 15 µg/L federal action level | Below the listed reference | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorohexanoic acid (PFHxA) | 4.4 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoropentanoic acid (PFPeA) | 4.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| 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 | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-06 to 2023-11-06 | UCMR5 Analytical Results: TRUCKEE-DONNER PUD, MAIN (CA2910003) |
Perfluorohexanoic acid (PFHxA)
Perfluoropentanoic acid (PFPeA)
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)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
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: TRUCKEE-DONNER PUD, MAIN (CA2910003)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: TRUCKEE-DONNER PUD, MAIN (CA2910003)
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 Truckee-Donner PUD, Main reported something related, it's shown below.
Lead at Truckee-Donner PUD, Main: 3.9 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.