What's in Oceanside, City of — Oceanside, Ca, CA tap water

13 contaminants were measured in the Oceanside, City of — Oceanside, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.

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Reporting year: 2023
Contaminants measured: 13
Over federal limit: 1
Approaching the limit: 0
Worst contaminant: Turbidity
Service area: CA
Source: Utility CCR

At or above the federal limit

Turbidity
Physical & aggregate · Reported level
95 NTU

Compliance history

Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.

Treatment technique violationHealth-based
2 violations on record · most recent Mar 2005
resolved

Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗

Physical & aggregate

Contaminant	Measured	Federal limit	Status
TurbidityA measure of cloudiness from suspended particles in the water.	95 NTUReported levelSDCWA Twin Oaks Plant	None set	At or above the limit
+By source (5)— SDCWA Twin Oaks Plant, MBGPF Treatment Effluent, R.A. Weese Treatment Effluent +2 more SDCWA Twin Oaks PlantPlant 9500% of limit MBGPF Treatment EffluentPlant 9200% of limit R.A. Weese Treatment EffluentPlant 20% of limit Carlsbad Desalination PlantPlant 8% of limit MWDSC Skinner PlantPlant 7% of limit

Radionuclides

Contaminant	Measured	Federal limit	Status
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.	5 pCi/LReported levelMBGPF Treatment Effluent	15 pCi/LMCL	Within the limit
+By source (5)— MBGPF Treatment Effluent, MWDSC Skinner Plant, R.A. Weese Treatment Effluent +2 more MBGPF Treatment EffluentPlant 33% of limit MWDSC Skinner PlantPlant 27% of limit R.A. Weese Treatment EffluentPlant 21% of limit Carlsbad Desalination PlantPlant 0% of limit SDCWA Twin Oaks PlantPlant 0% of limit
Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements.	0.32–1.6 pCi/LReported levelMBGPF Treatment Effluent	5 pCi/LMCL	Within the limit
+By source (5)— MBGPF Treatment Effluent, Carlsbad Desalination Plant, R.A. Weese Treatment Effluent +2 more MBGPF Treatment EffluentPlant 32% of limit Carlsbad Desalination PlantPlant 19% of limit R.A. Weese Treatment EffluentPlant 5% of limit SDCWA Twin Oaks PlantPlant 0% of limit MWDSC Skinner PlantPlant 0% of limit
Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances.	0–5 pCi/LReported levelMWDSC Skinner Plant	None set	Detected — no federal limit
+By source (3)— MWDSC Skinner Plant, SDCWA Twin Oaks Plant, Carlsbad Desalination Plant MWDSC Skinner PlantPlant SDCWA Twin Oaks PlantPlant Carlsbad Desalination PlantPlant
UraniumA naturally occurring radioactive metal from erosion of natural deposits.	3.2–4.6 pCi/LReported levelMBGPF Treatment Effluent	20 pCi/LMCL	Detected — no federal limit
+By source (5)— MBGPF Treatment Effluent, MWDSC Skinner Plant, SDCWA Twin Oaks Plant +2 more MBGPF Treatment EffluentPlant MWDSC Skinner PlantPlant SDCWA Twin Oaks PlantPlant R.A. Weese Treatment EffluentPlant Carlsbad Desalination PlantPlant

Inorganic chemicals

Contaminant	Measured	Federal limit	Status
FluorideA mineral often added to drinking water to help prevent tooth decay.	0.6–1.2 mg/LReported levelSDCWA Twin Oaks Plant	4 mg/LMCL	Within the limit
+By source (5)— SDCWA Twin Oaks Plant, Carlsbad Desalination Plant, MWDSC Skinner Plant +2 more SDCWA Twin Oaks PlantPlant 30% of limit Carlsbad Desalination PlantPlant 23% of limit MWDSC Skinner PlantPlant 20% of limit R.A. Weese Treatment EffluentPlant 7% of limit MBGPF Treatment EffluentPlant 3% of limit
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.	0–1.3 mg/LReported levelMBGPF Treatment Effluent	10 mg/LMCL	Within the limit
+By source (5)— MBGPF Treatment Effluent, R.A. Weese Treatment Effluent, Carlsbad Desalination Plant +2 more MBGPF Treatment EffluentPlant 13% of limit R.A. Weese Treatment EffluentPlant 0% of limit Carlsbad Desalination PlantPlant 0% of limit SDCWA Twin Oaks PlantPlant 0% of limit MWDSC Skinner PlantPlant 0% of limit

Metals

Contaminant	Measured	Federal limit	Status
CopperA metal that enters water from corroding household plumbing.	50–0.24 mg/LReported levelSDCWA Twin Oaks Plant	None set	Within the limit
+By source (5)— SDCWA Twin Oaks Plant, MWDSC Skinner Plant, Carlsbad Desalination Plant +2 more SDCWA Twin Oaks PlantPlant 18% of limit MWDSC Skinner PlantPlant 18% of limit Carlsbad Desalination PlantPlant 18% of limit R.A. Weese Treatment EffluentPlant 18% of limit MBGPF Treatment EffluentPlant 18% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.	50–1.2 ug/LReported levelMBGPF Treatment Effluent	None set	Within the limit
+By source (5)— MBGPF Treatment Effluent, SDCWA Twin Oaks Plant, R.A. Weese Treatment Effluent +2 more MBGPF Treatment EffluentPlant 8% of limit SDCWA Twin Oaks PlantPlant 8% of limit R.A. Weese Treatment EffluentPlant 8% of limit MWDSC Skinner PlantPlant 8% of limit Carlsbad Desalination PlantPlant 8% of limit
BariumA metal from erosion of natural deposits and industrial discharge.	0.095–0.122 mg/LReported levelSDCWA Twin Oaks Plant	2 mg/LMCL	Within the limit
+By source (5)— SDCWA Twin Oaks Plant, R.A. Weese Treatment Effluent, MBGPF Treatment Effluent +2 more SDCWA Twin Oaks PlantPlant 6% of limit R.A. Weese Treatment EffluentPlant 5% of limit MBGPF Treatment EffluentPlant 0% of limit Carlsbad Desalination PlantPlant 0% of limit MWDSC Skinner PlantPlant 0% of limit
ArsenicA naturally occurring element that also enters water from industry and agriculture.	Not detected ug/LReported levelCarlsbad Desalination Plant	None set	None detected
+By source (5)— Carlsbad Desalination Plant, R.A. Weese Treatment Effluent, MBGPF Treatment Effluent +2 more Carlsbad Desalination PlantPlant 0% of limit R.A. Weese Treatment EffluentPlant 0% of limit MBGPF Treatment EffluentPlant 0% of limit SDCWA Twin Oaks PlantPlant 0% of limit MWDSC Skinner PlantPlant 0% of limit
AluminumA common element sometimes used as a treatment coagulant.	0–0.16 mg/LReported levelSDCWA Twin Oaks Plant	None set	Detected — no federal limit
+By source (5)— SDCWA Twin Oaks Plant, MWDSC Skinner Plant, R.A. Weese Treatment Effluent +2 more SDCWA Twin Oaks PlantPlant MWDSC Skinner PlantPlant R.A. Weese Treatment EffluentPlant Carlsbad Desalination PlantPlant MBGPF Treatment EffluentPlant

Microbial

Contaminant	Measured	Federal limit	Status
Total ColiformA group of bacteria used as an indicator of overall water-system sanitation.	Not detected %Reported levelR.A. Weese Treatment Effluent	None set	None detected
+By source (5)— R.A. Weese Treatment Effluent, MBGPF Treatment Effluent, SDCWA Twin Oaks Plant +2 more R.A. Weese Treatment EffluentPlant MBGPF Treatment EffluentPlant SDCWA Twin Oaks PlantPlant MWDSC Skinner PlantPlant Carlsbad Desalination PlantPlant

Source: Oceanside, City of — Oceanside, Ca, CA's 2023 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.