Liberty Water Rio RicoWater quality report

1. At the source

   EPA UCMR 5 sampled this utility for 29 PFAS and lithium from April 17, 2023 to April 11, 2024. Each tick under a result’s line is one sample where it was found, dated when you point at it.

   NSF’s PFAS claims are tested to below 20 ppt. EPA’s limit is 4.0 ppt, and EPA says no certification yet shows a filter reaching its levels.

2. PFOS

   Above the legal limit

   40.9ppt

   Highest of 12 samples; found in six

   Health goal zero

   Legal limit 4.0

   40.9

   Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.

   • 53

     NSF/ANSI 53 · Look for: PFOS ReductionSame claim, other certifiers’ wording: Total PFAS Reduction; Perfluorooctane Sulfonate (PFOS)

   • 58

     NSF/ANSI 58 · Look for: Perfluorooctane Sulfonate (PFOS)

3. PFOA

   Above the legal limit

   10ppt

   Highest of 12 samples; found in four

   Health goal zero

   Legal limit 4.0

   10

   Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.

   • 53

     NSF/ANSI 53 · Look for: PFOA ReductionSame claim, other certifiers’ wording: Total PFAS Reduction; Perfluorooctanoic Acid (PFOA)

   • 58

     NSF/ANSI 58 · Look for: Perfluorooctanoic Acid (PFOA)

4. PFHxS

   Above the legal limit

   10.9ppt

   Highest of 12 samples; found in six

   Limit and goal 10

   10.9

   Above the 10 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.

   • 53

     NSF/ANSI 53 · Look for: Total PFAS ReductionSame claim, other certifiers’ wording: Perfluorohexane Sulfonic Acid (PFHxS)

5. Lithium

   Above EPA’s health benchmark

   20.2ppb

   Highest of 12 samples; found in 12

   Health reference level 10

   20.2

   Above EPA’s health reference level of 10 ppb, a screening level rather than an enforceable limit.

   What handles it: No certification claim covers this compound yet.

6. PFBS

   Below the benchmark

   20ppt

   Highest of 12 samples; found in six

   Hazard Index benchmark 2,000

   20

   Below EPA’s hazard index benchmark of 2,000 ppt. PFBS has no legal limit or health goal of its own.

   • 53

     NSF/ANSI 53 · Look for: Total PFAS Reduction

7. Also found, with no federal limit

   EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.

   Compound	Highest sample	Found in	Certification claim
   PFBA	7.0 ppt	3 of 12	None covers it
   PFHxA	4.0 ppt	1 of 12	None covers it
   PFPeA	3.0 ppt	1 of 12	None covers it

8. In treatment

   No federal results for this stop. Disinfection byproduct, chlorine and fluoride levels are in Liberty Water Rio Rico’s own annual report, which it must send you every year.

9. In the pipes

   No lead and copper results on file with EPA for this utility.

10. At your tap

    The last stretch is your own plumbing. A certified lab test is the only way to know what reaches your glass. Lead in your water: what to do

Violations since 2016

No health-based violations on file with EPA since 2016. There are 7 monitoring or reporting violations: a sample missed, late or not reported.