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Tap water quality report

Nacimiento Water Project

EPA monitoring tested this supplier for 44 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
5
detected
0
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
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
Nitrate
420 µg/L 4.2%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Fluoride
174.4 µg/L 4.4%
of the EPA limit 4000 µg/L
worst single sample: 178 µg/L
7/8 SYR4 2012–2019
Arsenic
4.7 µg/L 47%
of the EPA limit 10 µg/L
worst single sample: 5 µg/L
3/15 SYR4 2012–2019
Barium
37 µg/L 1.9%
of the EPA limit 2000 µg/L
 1/12 SYR4 2012–2019
Gross Beta Particle Activity
1 pCi/L
No EPA limit set
 1/1 SYR4 2019
39 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDibromochloromethaneEthylbenzeneLeadMercuryNitrate-NitriteNitriteSeleniumStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

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

Frequently asked questions about Nacimiento Water Project

Is Nacimiento Water Project tap water safe to drink?

EPA monitoring detected 5 contaminants in Nacimiento Water Project'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 Nacimiento Water Project's water?

EPA monitoring detected Nitrate, Fluoride, Arsenic, Barium, Gross Beta Particle Activity. The full list with the level and data source for each is above.

How many people does Nacimiento Water Project serve?

Nacimiento Water Project reports serving 0 people in California, per its EPA record.

Has Nacimiento Water Project had any water quality violations?

The EPA has no formal drinking-water violations on file for Nacimiento Water Project.

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.