Short answer: No measured result is above a legal limit; lithium sits above a screening level, and the water is very hard. Pasadena Water and Power serves 165,448 residents.
EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.
Source: EPA SDWIS 2026Q2.
PASADENA WATER AND POWER (EPA PWSID CA1910124) delivers surface water to 165,448 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. The utility's 2026 CCR reports very hard water.
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.
lead 1.9 µg/L, below the 15 µg/L action level
Lithium 64.2 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
Varify
17 strip readings, including lead, chlorine, fluoride, iron and hardness, plus 2 coliform bacteria tests
What it can't tell you: Strip colors give rough ranges, not lab numbers, and it cannot detect PFAS or arsenic.
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 Pasadena 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 Pasadena, no regulated PFAS were detected in EPA's 2024 testing; the lead 90th-percentile result was 1.9 µg/L against the 15 µg/L action level. PASADENA WATER AND POWER (PWSID CA1910124) has a Purity Score of 98/100 (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.
PASADENA WATER AND POWER (PWS ID CA1910124) is the public water system on record for Pasadena, California, serving about 165,448 people. Confirm the utility on your water bill before acting on a specific finding.
Surface water (primary source of record in EPA SDWIS).
None of the 29 PFAS in EPA's UCMR 5 testing (2023-07-24 to 2024-04-08) was detected. "Not detected" means below the lab's reporting limit, not proven zero.
PASADENA WATER AND POWER's most recent lead 90th-percentile result (2024–2026) was 1.9 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 Pasadena 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.
Pasadena's water is recorded as 13 gpg, very hard. Hardness is an aesthetic and plumbing characteristic, not a health-based limit.
Follow Pasadena's water
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.
Double opt-in: we email a confirmation link. Unsubscribe anytime. No spam.
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 64.2 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Water hardness | 13 gpg | Aesthetic, no federal health limit | Above a secondary/aesthetic reference | 2026 | Pasadena Water and Power (PWP) 2026 Consumer Confidence Report (CCR) |
| Lead (90th percentile) | 1.9 µg/L | 15 µg/L federal action level | Below the listed reference | 2024–2026 monitoring period (still open) | Lead & Copper Rule 90th-percentile: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| 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 | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-07-24 to 2024-04-08 | UCMR5 Analytical Results: PASADENA WATER AND POWER (CA1910124) |
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: PASADENA WATER AND POWER (CA1910124)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: PASADENA WATER AND POWER (CA1910124)
US EPA SDWIS
Consumer Confidence Report (CCR)
Pasadena Water and Power (PWP) 2026 Consumer Confidence Report (CCR)
Pasadena Water and Power (PWP)
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 Pasadena Water and Power reported something related, it's shown below.
Lead at Pasadena Water and Power: 1.9 µg/L (90th percentile, 2024–2026 monitoring period (still open)). 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.