PFOA
2.9× the limitPerfluorooctanoic acid
11.4ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2024Evidence
City water report · 2026
Is National City Tap Water Safe? 2026 Water Quality Report
Short answer: Two PFAS, PFOA and PFOS, are above their federal limits (2024 limits that water systems have until at least 2029 to meet); lithium sits above a screening level, and the water is very hard. Sweetwater Authority serves 184,915 residents.
Likely match, check your bill
SWEETWATER AUTHORITY serves National City
Your water bill or annual water quality report names your actual supplier.
- Source
- Surface water
- Lead service lines
- 0 lead
- SWEETWATER AUTHORITYThis reportCA3710025 · 184,915 served
Your water utility
Also supplies: Bonita
What stands out
Two PFAS above the 2024 federal limit
Each 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.
PFOS
1.4× the limitPerfluorooctanesulfonic acid
5.7ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2024Evidence
Coverage by group
32 results on record- PFAS (forever chemicals)2 above · 6 detected · 21 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other2 above
Every detected result
10 detected results, by distance from their limit
SWEETWATER AUTHORITY (EPA PWSID CA3710025) delivers surface water to 184,915 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 2025 CCR reports very hard water.
- Perfluorooctanoic acid (PFOA)EPA UCMR 5 · 20244.0 ng/L federal MCL (2024)11.4ng/LAbove limit
- Perfluorooctanesulfonic acid (PFOS)EPA UCMR 5 · 20244.0 ng/L federal MCL (2024)5.7ng/LAbove limit
- LithiumEPA UCMR 5 · 202410 µg/L EPA health reference level (screening, not a legal limit)13.6µg/LAbove screening
- Perfluorohexanesulfonic acid (PFHxS)EPA UCMR 5 · 202410 ng/L federal MCL (2024)9.4ng/LWithin reference
- Perfluorobutanesulfonic acid (PFBS)EPA UCMR 5 · 20242,000 ng/L EPA health advisory (screening, not a legal limit)11ng/LWithin reference
- Perfluorohexanoic acid (PFHxA)EPA UCMR 5 · 2024400,000 ng/L Michigan EGLE state MCL (strictest US state)8.6ng/LWithin reference
- Water hardnessUtility CCR · 2025Aesthetic, no federal health limit11.3gpgAbove aesthetic
- Perfluorobutanoic acid (PFBA)EPA UCMR 5 · 2024No federal or state limit; shown for transparency12.3ng/LDetected · no limit
- Perfluoroheptanoic acid (PFHpA)EPA UCMR 5 · 2024No federal or state limit; shown for transparency4.7ng/LDetected · no limit
- Perfluoropentanoic acid (PFPeA)EPA UCMR 5 · 2024No federal or state limit; shown for transparency7.6ng/LDetected · no limit
22 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
- PFDA
- PFDoA
- PFEESA
- PFHpS
- PFMBA
- PFMPA
- PFNA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lead (90th percentile)
Track record
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.
Not in this recordDisinfection by-products weren't monitored in this dataset
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.
What you can do
Test first, then treat what was found
- 01 · TestTest your own tap
Test your hardness before buying a softener.
Certified labHow to test your tap → - 02 · Treat PFASReverse osmosis, or carbon certified for PFAS
PFOA 11.4 ng/L, above the 4 ng/L limit (+7 more PFAS detected)
NSF/ANSI 58 or 53, with PFOA/PFOS/PFBS/PFHxA/PFHxS/PFBA/PFHpA/PFPeA named on the listingTreatment for PFAS → - 03 · LithiumDepends on the contaminant
Lithium 13.6 µg/L, above the 10.0 µg/L EPA health reference level
The certifier's listing for each named contaminantTreatment for Lithium →
Test your own tap
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
Watersafe Drinking Water Test Kit
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
- Turnaround: Minutes; the bacteria test can take up to 48 hours
What it can't tell you: Each test gives a yes/no or a rough range, not a lab number, and it cannot detect PFAS or arsenic.
Lab-certified results
ETR Labs Basic Water Quality Test Kit
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
- Analyzed by Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638
- Turnaround: 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.
When your results arrive, read them here →
Commercial
Certified for a concern found here
Each card names which National City 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.
Under-Sink Filter
Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Under-Sink Filter
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
See all 11 products certified for a National City concern →
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
Patriot Pure Ultimate Water Filtration System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Under-Sink Filter
Waterdrop G3P600 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Under-Sink Filter
Waterdrop G3P800 Tankless Reverse-Osmosis System
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (5)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Refrigerator Filter
Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)
- PFOA: eligible, evidence match
- PFOS: eligible, evidence match
- Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 5 more
Not suitable for (3)
- Treating every tap in the home
- A whole-home hard-water or scale problem
- All PFAS: its evidence covers only the compounds it names
Whole-House System
GE GXSH35W Water Softener (35,000-grain)
- Hardness / scale: eligible, evidence match
- Not established: PFOA, PFOS, Lithium and 6 more
Not suitable for (4)
- Treating only the drinking-water tap
- Lead from plumbing after the point it treats
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Whole-House System
Kenmore 420 Water Softener (40,000-grain)
- Hardness / scale: eligible, evidence match
- Not established: PFOA, PFOS, Lithium and 6 more
Not suitable for (4)
- Treating only the drinking-water tap
- Lead from plumbing after the point it treats
- Anyone who can't plumb, drill or hire an installer
- Renters who can't modify plumbing
Questions
Frequently asked questions
Is National City tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For National City, PFOA 11.4 ng/L and PFOS 5.7 ng/L were measured above the 4 ng/L federal limit in EPA's 2024 testing. SWEETWATER AUTHORITY (PWSID CA3710025) has a Purity Score of 57/100 (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 National City?
SWEETWATER AUTHORITY (PWS ID CA3710025) is the public water system on record for National City, California, serving about 184,915 people. Confirm the utility on your water bill before acting on a specific finding.
Where does National City get its drinking water?
Surface water (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in National City's water?
Yes. In EPA's UCMR 5 testing (2024-10-23 to 2025-07-17), PFOA was measured at 11.4 ng/L against a 4 ng/L federal limit and PFOS was measured at 5.7 ng/L against a 4 ng/L federal limit. PFBS (11 ng/L, below the 2,000 ng/L EPA health advisory), PFHxA (8.6 ng/L, below the 400,000 ng/L state limit) and PFHxS (9.4 ng/L, below the 10 ng/L federal limit) were also detected. PFBA (12.3 ng/L), PFHpA (4.7 ng/L) and PFPeA (7.6 ng/L) were also detected; they have no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Is there lead in National City's tap water?
Lead is not in National City'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 National City water report show?
PurityMap's current record for National City holds 32 findings: 4 above a reference, 3 detected within the reference, 3 detected with no limit and 22 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
Is National City's water hard?
National City's water is recorded as 11.3 gpg, very hard. Hardness is an aesthetic and plumbing characteristic, not a health-based limit.
Follow this water
Follow National City'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.
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Sources and dataAll 32 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule) · Utility CCR
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 11.4 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorooctanesulfonic acid (PFOS) | 5.7 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Lithium | 13.6 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Water hardness | 11.3 gpg | Aesthetic, no federal health limit | Above a secondary/aesthetic reference | 2025 | Sweetwater Authority 2025 Consumer Confidence Report (CCR) |
| Perfluorohexanesulfonic acid (PFHxS) | 9.4 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorobutanesulfonic acid (PFBS) | 11 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorohexanoic acid (PFHxA) | 8.6 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorobutanoic acid (PFBA) | 12.3 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoroheptanoic acid (PFHpA) | 4.7 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoropentanoic acid (PFPeA) | 7.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
22 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| 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 | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2021–2023 monitoring period | Lead & Copper Rule 90th-percentile: SWEETWATER AUTHORITY (CA3710025) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-10-23 to 2025-07-17 | UCMR5 Analytical Results: SWEETWATER AUTHORITY (CA3710025) |
- Result
- 11.4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorooctanesulfonic acid (PFOS)
- Result
- 5.7 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2024-10-23 to 2025-07-17
- Result
- 13.6 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Above the referenced health-based guidance value
- Sampled
- 2024-10-23 to 2025-07-17
- Result
- 11.3 gpg
- Benchmark
- Aesthetic, no federal health limit
- Status
- Above a secondary/aesthetic reference
- Sampled
- 2025
Perfluorohexanesulfonic acid (PFHxS)
- Result
- 9.4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Within a historical reference; current applicability unverified
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorobutanesulfonic acid (PFBS)
- Result
- 11 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Within the referenced health-based guidance value
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorohexanoic acid (PFHxA)
- Result
- 8.6 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Status
- Within a historical reference; current applicability unverified
- Sampled
- 2024-10-23 to 2025-07-17
- Result
- 12.3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluoroheptanoic acid (PFHpA)
- Result
- 4.7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluoropentanoic acid (PFPeA)
- Result
- 7.6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Detected, no limit
- Sampled
- 2024-10-23 to 2025-07-17
22 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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2021–2023 monitoring period
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
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
- 2024-10-23 to 2025-07-17
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2024-10-23 to 2025-07-17
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: SWEETWATER AUTHORITY (CA3710025)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: SWEETWATER AUTHORITY (CA3710025)
US EPA SDWIS
Consumer Confidence Report (CCR)
Sweetwater Authority 2025 Consumer Confidence Report (CCR)
Sweetwater Authority
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 Sweetwater Authority reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Sweetwater Authority: not detected (90th percentile, 2021–2023 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
ZIP codes in National City
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.