Higher concern
Last tested: September 2024
Action Advised
Source: Official EPA UCMR5 federal monitoring data. Last tested September 2024.
Townships: Merced CCD, CA Planada-Le Grand CCD, CA Atwater CCD, CA
The short answer for University of California-Merced (95340)
Merced tap water has 10 contaminants above EPA guidelines, including PFHxS at 3.8× the limit (tested January 2024). See the full compound-by-compound breakdown and filter recommendations.
The health risk for Merced
PFAS ('forever chemicals') have been detected above EPA limits in this water system's most recent tests. These synthetic chemicals do not break down in the body and are linked to a range of health effects. A certified filter is strongly recommended.
PFHxS, PFOA, PFOS above limit.
PFHxS concentration (µg/L)
January 2024
0 µg/L
0.004 µg/L
0.02 µg/L
0.004 µg/L
EPA limit
guideline
275% above limit
Comparison
vs. guideline
EPA limit: 0.004 µg/L | Your water: 0.015 µg/L
Certified Filters for Merced Tap Water
PFHxS (a PFAS 'forever chemical') was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473 Removes 99.99% PFAS Made in USA BPA-free
Own your home?
There's a more permanent solution
Reverse osmosis eliminates PFAS on demand — no refilling, covers cooking water too
See options →
⚠️
Common pitchers like Brita do not remove PFAS. You need a filter independently certified to NSF P473 (for pitcher filters) or NSF/ANSI 58 (for reverse osmosis systems). All three options below carry the relevant certification.
Certified Pitcher
Removes PFAS (99%+)
No installation, works today
Lowest upfront cost (~$70)
Must refill manually
Filters only what you pour in - not cooking water
Reverse Osmosis More complete
Removes PFAS + lead, arsenic, nitrates & more
Always-on - no refilling ever
Noticeably better tasting water
Filters drinking & cooking water automatically
Higher upfront cost ($200-$400)
Choose your option
Simplest to start · Made in USA
Epic Pure XP Water Filter Pitcher
From~$70
Best for
Renters, apartments, or anyone who wants to act today with zero setup. Dual-layer CoreXchange™ filter removes 70+ contaminants. 100 gallon capacity, replace every 3-4 months.
No install
NSF/ANSI 42, 53, 401 & P473
99.99% PFAS removal
BPA-free
View on Amazon →
RO · No plumbing · Plug-in only
AquaTru Classic Countertop RO
~$475
Best for
Renters or anyone who wants full RO purification without installation. Removes 84 certified contaminants - just plug in and pour. 4:1 pure-to-drain ratio (very water efficient).
No plumbing NSF/ANSI 42, 53, 58, 401 & P473 84 contaminants certified 4:1 efficiency ratio
View on Amazon →
⭐ RO · Always-on · Homeowners
Waterdrop G3P600 Reverse Osmosis System
~$450
Best for
Homeowners and families who want permanent, always-on protection. 8-stage tankless RO with smart LED faucet - filtered water on demand, no tank to wait on. Saves 70% of under-sink cabinet space.
8-stage tankless NSF/ANSI 42, 53, 58 & 372 Removes PFAS, arsenic, fluoride & more Smart LED faucet
View on Amazon →
Most elevated compounds
Compound
Measurement
EPA Limit
Comparison
PFHxS Tested: January 2024 · Well 2B
0.015 µg/L
0.004 µg/L
275% above limit
PFHxS Tested: January 2024 · Well 2A
0.014 µg/L
0.004 µg/L
250% above limit
PFHxS Tested: January 2024 · Well 10
0.012 µg/L
0.004 µg/L
200% above limit
PFOS Tested: January 2024 · Well 2B
0.009 µg/L
0.004 µg/L
123% above limit
PFOS Tested: January 2024 · Well 2A
0.009 µg/L
0.004 µg/L
123% above limit
View all tested compounds
Well 10 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
PFHxS
0.012 µg/L
0.004 µg/L
200% above limit
PFOS
0.006 µg/L
0.004 µg/L
62% above limit
PFOA
0.004 µg/L
0.004 µg/L
12% above limit
PFHxA
0.003 µg/L
3 µg/L
0.1% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 2A · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
PFHxS
0.014 µg/L
0.004 µg/L
250% above limit
PFOS
0.009 µg/L
0.004 µg/L
123% above limit
PFOA
0.006 µg/L
0.004 µg/L
53% above limit
PFHxA
0.005 µg/L
3 µg/L
0.2% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 2B · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
PFHxS
0.015 µg/L
0.004 µg/L
275% above limit
PFOS
0.009 µg/L
0.004 µg/L
123% above limit
PFOA
0.006 µg/L
0.004 µg/L
45% above limit
PFHxA
0.004 µg/L
3 µg/L
0.1% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 2C · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
PFHxS
0.005 µg/L
0.004 µg/L
28% above limit
lithium
<9.000 µg/L
10 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 11 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
4:2 FTS
0.003 µg/L
0.003 µg/L
100% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 13 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
4:2 FTS
0.003 µg/L
0.003 µg/L
100% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 14 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 15 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 16 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
6:2 FTS
0.005 µg/L
0.005 µg/L
100% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 17 (UC Merced) · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 18 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 19 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 1A · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 1C · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 21 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 3C · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 5B · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 7C · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
6:2 FTS
0.005 µg/L
0.005 µg/L
100% of limit
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 8 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well 9 · Tested: January 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Well Site 20 · Tested: September 2024
Compound
Measurement
EPA Limit
Comparison
lithium
<9.000 µg/L
10 µg/L
Below limit
PFHxS
<0.003 µg/L
0.004 µg/L
Below limit
HFPO-DA
<0.005 µg/L
0.01 µg/L
Below limit
PFNA
<0.004 µg/L
0.01 µg/L
Below limit
PFHxA
<0.003 µg/L
3 µg/L
Below limit
PFBA
<0.005 µg/L
6 µg/L
Below limit
11Cl-PF3OUdS
<0.005 µg/L
0.005 µg/L
Below limit
4:2 FTS
<0.003 µg/L
0.003 µg/L
Below limit
6:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
8:2 FTS
<0.005 µg/L
0.005 µg/L
Below limit
9Cl-PF3ONS
<0.002 µg/L
0.002 µg/L
Below limit
ADONA
<0.003 µg/L
0.003 µg/L
Below limit
PFBS
<0.003 µg/L
0.003 µg/L
Below limit
PFDA
<0.003 µg/L
0.003 µg/L
Below limit
PFDoA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpA
<0.003 µg/L
0.003 µg/L
Below limit
PFHpS
<0.003 µg/L
0.003 µg/L
Below limit
PFOA
<0.004 µg/L
0.004 µg/L
Below limit
PFOS
<0.004 µg/L
0.004 µg/L
Below limit
PFPeA
<0.003 µg/L
0.003 µg/L
Below limit
PFTrDA
<0.007 µg/L
0.007 µg/L
Below limit
PFUnA
<0.002 µg/L
0.002 µg/L
Below limit
Water utilities serving ZIP 95340 Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
Modeled boundaries are shown with a dashed outline.
Frequently Asked Questions about ZIP 95340 Tap Water
What contaminants are above EPA limits in ZIP 95340?
ZIP 95340 has 10 contaminants above EPA health guidelines in the latest available data, including PFHxS at 3.8x the EPA guideline. The full table on this page lists every tested compound and its measured level.
Will boiling ZIP 95340 tap water remove PFHxS?
No. Boiling does not remove PFAS, and the compounds can actually become more concentrated as water evaporates. To reduce PFAS at home, use a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis).
Do basic pitcher filters remove PFHxS?
Most basic pitcher filters are only certified to NSF/ANSI 42 or 53, which do not cover PFAS. Look for a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis) on the spec sheet.
Who provides tap water in ZIP 95340?
Public records identify CITY OF MERCED as a primary water system associated with ZIP 95340. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 95340 tap water last tested?
The most recent test date used in this report is September 2024. EnviroClarity last refreshed this page on 2026-05-04.
Where can I find the official water quality report for ZIP 95340?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact CITY OF MERCED or visit their website for the latest official report covering ZIP 95340. The EPA also maintains a national CCR locator.
Data reflects publicly reported utility records from EPA datasets and local utility disclosures.
This information is educational and not medical advice.