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Tap water quality report

Slocsa #10a - Cayucos

EPA monitoring tested this supplier for 12 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

12
contaminants tested
11
detected
1,200
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
San Luis Obispo

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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
Bromoform
10.18 µg/L
No EPA limit set
worst single sample: 10.5 µg/L
67/67 SYR4 2012–2019
TTHM
71.68 µg/L 90%
of the EPA limit 80 µg/L
worst single sample: 80.3 µg/L
67/67 SYR4 2012–2019
Bromodichloromethane
19.85 µg/L
No EPA limit set
worst single sample: 23.5 µg/L
66/67 SYR4 2012–2019
Dibromochloromethane
19.38 µg/L
No EPA limit set
worst single sample: 21.5 µg/L
65/67 SYR4 2012–2019
Chloroform
28.855 µg/L
No EPA limit set
worst single sample: 39.7 µg/L
64/67 SYR4 2012–2019
Dibromoacetic Acid
5.445 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
58/60 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
18.675 µg/L 31%
of the EPA limit 60 µg/L
worst single sample: 24.1 µg/L
58/60 SYR4 2012–2019
Dichloroacetic Acid
9.45 µg/L
No EPA limit set
worst single sample: 11.9 µg/L
56/60 SYR4 2012–2019
Trichloroacetic Acid
6.425 µg/L
No EPA limit set
worst single sample: 8.9 µg/L
38/60 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2023
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/60 SYR4 2012–2019
1 contaminants tested, none detected
Monochloroacetic Acid

Utility contact

Contact
RUEDAS, DANIELLE
Phone
805-473-7156
Email
druedas@co.slo.ca.us

Frequently asked questions about Slocsa #10a - Cayucos

Is Slocsa #10a - Cayucos tap water safe to drink?

EPA monitoring detected 11 contaminants in Slocsa #10a - Cayucos'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 Slocsa #10a - Cayucos's water?

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

How many people does Slocsa #10a - Cayucos serve?

Slocsa #10a - Cayucos reports serving 1,200 people in California, per its EPA record.

Has Slocsa #10a - Cayucos had any water quality violations?

The EPA has no formal drinking-water violations on file for Slocsa #10a - Cayucos.

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.