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Naval Air Station Corpus Christi

What EPA’s and Texas’s records show in this utility’s water: PFAS and lithium; nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
7,048 people
Connections
256
Water source
Surface water bought from another system
Based in
Corpus Christi, TX
County
Nueces
Owner
Federal government
The 2 ZIP codes it serves

78418, 78419

The short answer

1 result is above the health goal, and 1 more is above EPA’s health benchmark. The worst: Lithium, above EPA’s health benchmark. No health-based violations on file since 2016.

What handles it

What was found

PFAS and lithium: EPA UCMR 5, samples taken from Feb. 21, 2024 to Nov. 18, 2024.

Lead and copper: EPA SDWIS monitoring periods ending 2018 to 2026.

Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate: Texas’s own results, samples taken from Jan. 29, 2020 to July 16, 2026, with EPA’s 2012 to 2019 file for earlier years.

PFAS: None of the six PFAS in EPA’s 2024 drinking water rule was found in this utility’s samples. One other PFAS with no federal limit was found, the highest PFBA at 7.6 ppt: see it below.

EPA’s 2024 PFAS rule, compound by compound

PFASEPA’s limitResult
PFOA4.0 pptNot foundNot found in any of 4 samples, below 4 ppt
PFOS4.0 pptNot foundNot found in any of 4 samples, below 4 ppt
PFHxS10 pptNot foundNot found in any of 4 samples, below 3 ppt
PFNA10 pptNot foundNot found in any of 4 samples, below 4 ppt
HFPO-DA (GenX)10 pptNot foundNot found in any of 4 samples, below 5 ppt
PFBSIndex onlyNot foundNot found in any of 4 samples, below 3 ppt
Hazard IndexPFHxS, PFNA, HFPO-DA and PFBS together1Doesn’t applyDoesn’t apply: no sampling location found two or more of the four
Results from EPA’s UCMR 5 sampling. “Below” is the lab’s reporting level: a result under it reads as not found, which is not the same as zero. The limits are EPA’s 2024 rule, with compliance due from 2029; EPA has since proposed changes to some of them, explained on each compound’s page. PFBS has no limit of its own and counts only toward the Hazard Index, which adds up the four, each against EPA’s health-based level, from each sampling location’s average, as EPA’s UCMR 5 summary does. It counts only where two or more of the four were found, and is above the limit from 1.5.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

1.3ppb

90th percentile, 2024 to 2026

In the latest period, 9 in 10 homes sampled were at or below 1.3 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Above EPA’s health benchmark1

Lithium

Comes from the source

Above EPA’s health benchmark

24.2ppb

Highest sample, Feb. 21, 2024; found in 4 of 4

The highest sample was 24.2 ppb, about 2.4 times EPA’s health reference level of 10 ppb. That is a screening level, not an enforceable limit.

What handles it

No certification claim covers this compound yet.

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

60ppb

Highest yearly average, 2020 to 2026

2026 average: 59.3 ppb

Averaged by year, the highest was 60 ppb, in 2021, below EPA’s legal limit of 80 ppb. Its highest single sample was 84.2 ppb. In 2026, the latest year on file, its six samples averaged 59.3 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 83.9 ppb, in 2015, and EPA recorded a violation in 2015.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

21.2ppb

Highest yearly average, 2020 to 2026

2026 average: 8.6 ppb

Averaged by year, the highest was 21.2 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 28.8 ppb. In 2026, the latest year on file, its six samples averaged 8.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 34.5 ppb, in 2015.

What handles it

No certification claim covers this compound yet.

Nitrate

Comes from the source

Below EPA’s limits

0.61ppm

Highest sample; found in 6 of 6

2025, one sample: 0.61 ppm

The highest sample, in 2025, was 0.61 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its one sample was 0.61 ppm.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Texas utilities above EPA’s PFAS limits

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.

CompoundHighest sampleFound inCertification claim
PFBA7.6 ppt2 of 4None covers it
28 compounds tested and not foundIncluding all six PFAS in EPA’s 2024 rule. Below the reporting level in every sample. Not found is not the same as zero.
  • 11Cl-PF3OUdS
  • 4:2 FTS
  • 6:2 FTS
  • 8:2 FTS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • NEtFOSAA
  • NFDHA
  • NMeFOSAA
  • PFBS
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpA
  • PFHpS
  • PFHxA
  • PFHxS
  • PFMBA
  • PFMPA
  • PFNA
  • PFOA
  • PFOS
  • PFPeA
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best water filters for lead, ranked

Disinfectant

Naval Air Station Corpus Christi reported adding chloramine before water enters its pipes, at its one sampling point, in its 2024 sampling for EPA.

Chloramine is chlorine combined with ammonia. It lasts longer in the pipes, and unlike chlorine, it doesn’t leave water that sits out. A filter’s chlorine claim doesn’t cover it: look for the separate chloramine claim under NSF/ANSI 42. No shower filter can carry one: NSF/ANSI 177, the shower filter standard, covers free chlorine only. Fish, turtles and frogs need it removed from their water. This utility buys its water from another system, so what it reported may leave out treatment done before the water reaches it. This is what the utility reported for that sampling. Its annual water quality report says what it uses now.

Chlorine vs. chloramineFilters with a chloramine claimShower filters, by what their listings cover

Violations since 2016

No health-based violations on file with EPA since 2016. There are 2 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Naval Air Station Corpus Christi’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 samples are from Feb. 21, 2024 to Nov. 18, 2024; Texas’s results run from Jan. 29, 2020 to July 16, 2026.

Testing your own tap

Naval Air Station Corpus Christi’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Texas certifies.

The lab Texas certifies closest to the area Naval Air Station Corpus Christi serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Corpus Christi -Nueces County Public Health District Laboratory

    Corpus Christi, TX · about 12 miles

    Certified for bacteria

    (361) 826-7213

Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.

All 80 certified labs for Texas

Sources

PWSID TX1780017. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Nueces County

All Texas utilities

What to do next