Tap WaterIndex

← California

Tap water quality report

Pauma

EPA monitoring tested this supplier for 69 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
11
detected
5,700
people served
1
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Native American

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.

1
health-based violations
126
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1991-07-01 → 1991-07-31
MR Monitoring Unaddressed 2026-01-23
MON Monitoring Resolved 2022-06-01 → 2022-06-30
MR Monitoring Resolved 2015-01-01 → 2015-12-31
MR Monitoring Resolved 2015-01-01 → 2015-12-31
MR Monitoring Resolved 2011-05-01 → 2011-05-31
MR Monitoring Resolved 2011-04-01 → 2011-04-30
MR Monitoring Resolved 2011-03-01 → 2011-03-31
MR Monitoring Resolved 2011-02-01 → 2011-02-28
MR Monitoring Resolved 2011-01-01 → 2011-03-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
1720 µg/L 17%
of the EPA limit 10000 µg/L
worst single sample: 1780 µg/L
36/36 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
TTHM
12.95 µg/L 16%
of the EPA limit 80 µg/L
worst single sample: 15 µg/L
6/7 SYR4 2012–2019
Combined Radium (-226 And -228)
0.3300 pCi/L 6.6%
of the EPA limit 5 pCi/L
worst single sample: 0.3350 pCi/L
2/2 SYR4 2017
Fluoride
157 µg/L 3.9%
of the EPA limit 4000 µg/L
worst single sample: 160 µg/L
2/2 SYR4 2013
Gross Alpha, Excl. Radon And U
6.009 pCi/L 40%
of the EPA limit 15 pCi/L
worst single sample: 6.22 pCi/L
2/2 SYR4 2016
Selenium
31.75 µg/L 64%
of the EPA limit 50 µg/L
worst single sample: 33 µg/L
2/2 SYR4 2013
Arsenic
6 µg/L 60%
of the EPA limit 10 µg/L
 1/2 SYR4 2013
Barium
10 µg/L 0.5%
of the EPA limit 2000 µg/L
 1/2 SYR4 2013
Combined Uranium
4.917 µg/L 16%
of the EPA limit 30 µg/L
 1/2 SYR4 2016
Total Haloacetic Acids (HAA5)
5.92 µg/L 9.9%
of the EPA limit 60 µg/L
 1/7 SYR4 2012–2019
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneHfpo-DaMercuryNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Temet Majel
Phone
7607421289
Email
tmajel@pauma-nsn.gov

Frequently asked questions about Pauma

Is Pauma tap water safe to drink?

EPA monitoring detected 11 contaminants in Pauma'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 Pauma's water?

EPA monitoring detected Nitrate, Lead, TTHM, Combined Radium (-226 And -228), Fluoride, and others. The full list with the level and data source for each is above.

How many people does Pauma serve?

Pauma reports serving 5,700 people in California, per its EPA record.

Has Pauma had any water quality violations?

The EPA has 126 violations on file for Pauma, of which 1 is health-based (a contaminant limit or required treatment was breached) and 1 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.