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Tap water quality report

Rancho Carrillo Mwc

EPA monitoring tested this supplier for 69 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
15
detected
210
people served
11
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
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.

11
health-based violations
79
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2013-10-01 → 2013-10-31

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 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
10885 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 12200 µg/L
264/270 SYR4 2012–2019
Fluoride
364 µg/L 9.1%
of the EPA limit 4000 µg/L
worst single sample: 400 µg/L
13/20 SYR4 2013–2018
Chromium
55.5 µg/L 56%
of the EPA limit 100 µg/L
worst single sample: 59 µg/L
8/23 SYR4 2013–2018
Copper
240 µg/L 18%
of the EPA limit 1300 µg/L
worst single sample: 270 µg/L
7/15 SYR4 2013–2018
Lead
102.5 µg/L 683%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 127 µg/L
6/20 SYR4 2013–2018
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2023
Antimony, Total
90.203 µg/L 1503%
of the EPA limit, at the 95th percentile of samples — 6 µg/L
worst single sample: 100 µg/L
3/23 SYR4 2013–2018
Dichloromethane
2.862 µg/L 57%
of the EPA limit 5 µg/L
worst single sample: 2.94 µg/L
3/8 SYR4 2013–2018
Arsenic
4.824 µg/L 48%
of the EPA limit 10 µg/L
worst single sample: 5 µg/L
2/23 SYR4 2013–2018
Barium
151.27 µg/L 7.6%
of the EPA limit 2000 µg/L
worst single sample: 156 µg/L
2/23 SYR4 2013–2018
Combined Uranium
1.35292 µg/L 4.5%
of the EPA limit 30 µg/L
 1/1 SYR4 2018
Mercury
2.08 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 2 µg/L
 1/23 SYR4 2013–2018
Nitrite
0.0333 µg/L 0%
of the EPA limit 1000 µg/L
 1/17 SYR4 2013–2018
Selenium
5.03 µg/L 10%
of the EPA limit 50 µg/L
 1/23 SYR4 2013–2018
Thallium, Total
120 µg/L 6000%
of the EPA limit, at the 95th percentile of samples — 2 µg/L
 1/23 SYR4 2013–2018
54 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HOPKINS, LUKE
Phone
949-878-1821
Email
Luke@ranchocarrillo.com

Frequently asked questions about Rancho Carrillo Mwc

Is Rancho Carrillo Mwc tap water safe to drink?

EPA monitoring detected 15 contaminants in Rancho Carrillo Mwc'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 Rancho Carrillo Mwc's water?

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

How many people does Rancho Carrillo Mwc serve?

Rancho Carrillo Mwc reports serving 210 people in California, per its EPA record.

Has Rancho Carrillo Mwc had any water quality violations?

The EPA has 79 violations on file for Rancho Carrillo Mwc, of which 11 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.