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Tap water quality report

City of Martinez

EPA monitoring tested this supplier for 108 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
22
detected
30,997
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
Contra Costa

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.

0
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2015-10-01
MR Monitoring Resolved 2015-10-01
MR Monitoring Resolved 1993-06-30 → 2000-03-01

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
Bromate
9.44 µg/L 94%
of the EPA limit 10 µg/L
worst single sample: 18 µg/L
53/68 SYR4 2012–2019
Arsenic
4.655 µg/L 47%
of the EPA limit 10 µg/L
worst single sample: 5.8 µg/L
30/51 SYR4 2012–2019
Fluoride
795.5 µg/L 20%
of the EPA limit 4000 µg/L
worst single sample: 910 µg/L
30/47 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 27/27 LCR 2025
Nitrate
4286.09 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4859 µg/L
24/106 SYR4 2012–2019
Nitrate-Nitrite
920000 µg/L 9200%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 1000000 µg/L
9/26 SYR4 2012–2019
Barium
158 µg/L 7.9%
of the EPA limit 2000 µg/L
worst single sample: 160 µg/L
5/51 SYR4 2012–2019
Dichloromethane
3.12 µg/L 62%
of the EPA limit 5 µg/L
worst single sample: 3.4 µg/L
5/38 SYR4 2012–2019
Copper
289.2 µg/L 22%
of the EPA limit 1300 µg/L
worst single sample: 320 µg/L
3/51 SYR4 2012–2019
Gross Beta Particle Activity
37.46 pCi/L
No EPA limit set
worst single sample: 41 pCi/L
3/5 SYR4 2014–2019
Bromoform
2.725 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
2/6 SYR4 2012–2017
Cyanide
1.575 µg/L 0.8%
of the EPA limit 200 µg/L
worst single sample: 1.6 µg/L
2/50 SYR4 2012–2019
Chromium
29 µg/L 29%
of the EPA limit 100 µg/L
worst single sample: 30 µg/L
2/51 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
0.3845 µg/L 6.4%
of the EPA limit 6 µg/L
worst single sample: 0.3900 µg/L
2/39 SYR4 2012–2019
Lead
2.73 µg/L 18%
of the EPA limit 15 µg/L
worst single sample: 2.8 µg/L
2/51 SYR4 2012–2019
TTHM
3.845 µg/L 4.8%
of the EPA limit 80 µg/L
worst single sample: 3.9 µg/L
2/6 SYR4 2012–2017
Asbestos
0.2000 MFL 2.9%
of the EPA limit 7 MFL
 1/24 SYR4 2012–2017
Cadmium
1.6 µg/L 32%
of the EPA limit 5 µg/L
 1/51 SYR4 2012–2019
Combined Radium (-226 And -228)
0.1600 pCi/L 3.2%
of the EPA limit 5 pCi/L
 1/1 SYR4 2019
Di(2-ethylhexyl) Adipate
0.2100 µg/L 0.1%
of the EPA limit 400 µg/L
 1/39 SYR4 2012–2019
Dibromochloromethane
1.1 µg/L
No EPA limit set
 1/6 SYR4 2012–2017
Selenium
7.6 µg/L 15%
of the EPA limit 50 µg/L
 1/51 SYR4 2012–2019
86 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChloroformCombined UraniumDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PAVLOV, GEORGE
Phone
925-372-3587
Email
[email protected]

Frequently asked questions about City of Martinez

Is City of Martinez tap water safe to drink?

EPA monitoring detected 22 contaminants in City of Martinez'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 City of Martinez's water?

EPA monitoring detected Bromate, Arsenic, Fluoride, Lead, Nitrate, and others. The full list with the level and data source for each is above.

How many people does City of Martinez serve?

City of Martinez reports serving 30,997 people in California, per its EPA record.

Has City of Martinez had any water quality violations?

The EPA has 3 violations on file for City of Martinez, of which 0 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.