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Tap water quality report

Oceano Comm Services Dist.

EPA monitoring tested this supplier for 93 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

93
contaminants tested
20
detected
7,601
people served
2
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
San Luis Obispo

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.

2
health-based violations
20
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2006-05-01 → 2006-05-31
MCL Health-based Resolved 2006-05-01 → 2006-05-31
MON Monitoring Resolved 2021-07-01 → 2021-07-31
MON Monitoring Resolved 2021-07-01 → 2021-07-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31
MR Monitoring Resolved 2010-12-01 → 2010-12-31

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 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
Selenium
150 µg/L 300%
of the EPA limit, in the worst sample — 50 µg/L
 108/379 SYR4 2012–2019
Dichloroacetic Acid
19.4 µg/L
No EPA limit set
 63/63 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
38 µg/L 63%
of the EPA limit 60 µg/L
 63/63 SYR4 2012–2019
Trichloroacetic Acid
16.6 µg/L
No EPA limit set
 63/63 SYR4 2012–2019
Dibromochloromethane
17.7 µg/L
No EPA limit set
 62/63 SYR4 2012–2019
TTHM
76.1 µg/L 95%
of the EPA limit 80 µg/L
 62/63 SYR4 2012–2019
Bromodichloromethane
20.8 µg/L
No EPA limit set
 61/63 SYR4 2012–2019
Chloroform
50.6 µg/L
No EPA limit set
 61/63 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 60/60 LCR 2026
Dibromoacetic Acid
8 µg/L
No EPA limit set
 53/63 SYR4 2012–2019
Bromoform
11.8 µg/L
No EPA limit set
 47/63 SYR4 2012–2019
Nitrate
7400 µg/L 74%
of the EPA limit 10000 µg/L
 44/134 SYR4 2012–2019
Fluoride
390 µg/L 9.8%
of the EPA limit 4000 µg/L
 13/13 SYR4 2012–2019
Combined Uranium
12.367 µg/L 41%
of the EPA limit 30 µg/L
 7/7 SYR4 2015–2017
Arsenic
2.9 µg/L 29%
of the EPA limit 10 µg/L
 6/10 SYR4 2012–2019
Monochloroacetic Acid
2.5 µg/L
No EPA limit set
 6/63 SYR4 2012–2019
Lead
6.9 µg/L 46%
of the EPA limit 15 µg/L
 2/10 SYR4 2012–2019
Copper
89 µg/L 6.8%
of the EPA limit 1300 µg/L
 1/13 SYR4 2012–2019
Cadmium
1.4 µg/L 28%
of the EPA limit 5 µg/L
 1/10 SYR4 2012–2019
Nitrate-Nitrite
7100 µg/L 71%
of the EPA limit 10000 µg/L
 1/6 SYR4 2012–2019
73 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, TotalAtrazineBhc-GammaBariumBenzeneBeryllium, TotalChlorobenzeneCyanideCarbon TetrachlorideChlordaneChromiumDichloromethaneEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MARRACCINO, TONY
Phone
805-481-6730
Email
tony@oceanocsd.org

Frequently asked questions about Oceano Comm Services Dist.

Is Oceano Comm Services Dist. tap water safe to drink?

EPA monitoring detected 20 contaminants in Oceano Comm Services Dist.'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 Oceano Comm Services Dist.'s water?

EPA monitoring detected Selenium, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Oceano Comm Services Dist. serve?

Oceano Comm Services Dist. reports serving 7,601 people in California, per its EPA record.

Has Oceano Comm Services Dist. had any water quality violations?

The EPA has 20 violations on file for Oceano Comm Services Dist., of which 2 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.