Tap WaterIndex

← California

Tap water quality report

Nas North Island & Nab Coronado

EPA monitoring tested this supplier for 42 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
12
detected
36,990
people served
9
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Federal government
Counties served
San Diego

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

9
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-01-01 → 2008-01-31
MCL Health-based Resolved 2008-01-01 → 2008-01-31
MCL Health-based Resolved 2006-07-01 → 2006-09-30
MCL Health-based Resolved 2006-07-01 → 2006-09-30
MCL Health-based Resolved 2005-07-01 → 2005-09-30
MCL Health-based Resolved 2005-07-01 → 2005-09-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
12 µg/L
No EPA limit set
 52/52 SYR4 2013–2019
Bromoform
9.3 µg/L
No EPA limit set
 52/52 SYR4 2013–2019
Chloroform
8 µg/L
No EPA limit set
 52/52 SYR4 2013–2019
Dibromochloromethane
19 µg/L
No EPA limit set
 52/52 SYR4 2013–2019
TTHM
44 µg/L 55%
of the EPA limit 80 µg/L
 52/52 SYR4 2013–2019
Dichloroacetic Acid
12 µg/L
No EPA limit set
 45/52 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
35 µg/L 58%
of the EPA limit 60 µg/L
 43/52 SYR4 2013–2019
Dibromoacetic Acid
4.5 µg/L
No EPA limit set
 42/52 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 30/30 LCR 2023
Trichloroacetic Acid
28 µg/L
No EPA limit set
 20/52 SYR4 2013–2019
Lithium
28.8 µg/L
No EPA limit set
 3/3 UCMR-5 2025
Monochloroacetic Acid
2.1 µg/L
No EPA limit set
 1/52 SYR4 2013–2019
30 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfuna

Utility contact

Contact
BODEL, ANNE
Phone
619-545-1130
Email
anne.l.bodel.civ@us.navy.mil

Frequently asked questions about Nas North Island & Nab Coronado

Is Nas North Island & Nab Coronado tap water safe to drink?

EPA monitoring detected 12 contaminants in Nas North Island & Nab Coronado's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Nas North Island & Nab Coronado's water?

EPA monitoring detected Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Nas North Island & Nab Coronado serve?

Nas North Island & Nab Coronado reports serving 36,990 people in California, per its EPA record.

Has Nas North Island & Nab Coronado had any water quality violations?

The EPA has 9 violations on file for Nas North Island & Nab Coronado, of which 9 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.