Is Csa 51 Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Riverside

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
Other	Monitoring	Resolved	2005-07-01
Other	Monitoring	Resolved	2005-07-01
Other	Monitoring	Resolved	2005-07-01
MR	Monitoring	Archived	1981-10-01 → 1982-09-30
MR	Monitoring	Archived	1980-10-30 → 1981-10-29

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	1793.43 µg/L 18% of the EPA limit 10000 µg/L worst single sample: 1800 µg/L	30/30	SYR4	2013–2019
Fluoride	7675 µg/L 192% of the EPA limit, at the 95th percentile of samples — 4000 µg/L worst single sample: 7700 µg/L	6/6	SYR4	2012–2019
Lead	0.00080 mg/L 5.3% of the EPA limit 0.0150 mg/L	5/5	LCR	2025
Arsenic	18.02 µg/L 180% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 20 µg/L	4/6	SYR4	2012–2019
Chromium	16.555 µg/L 17% of the EPA limit 100 µg/L worst single sample: 17 µg/L	2/3	SYR4	2016–2019
Barium	57 µg/L 2.9% of the EPA limit 2000 µg/L	1/3	SYR4	2016–2019
Combined Uranium	12.2776 µg/L 41% of the EPA limit 30 µg/L	1/1	SYR4	2014

32 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosBenzeneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideDichloromethaneEthylbenzeneLeadMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: ALVAREZ, DAVID
Phone: 951-955-3313
Email: dalvarez@rivco.org

Frequently asked questions about Csa 51

Is Csa 51 tap water safe to drink?

EPA monitoring detected 7 contaminants in Csa 51'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 Csa 51's water?

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

How many people does Csa 51 serve?

Csa 51 reports serving 400 people in California, per its EPA record.

Has Csa 51 had any water quality violations?

The EPA has 5 violations on file for Csa 51, 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.