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Tap water quality report

Rancheritos Mwc

EPA monitoring tested this supplier for 100 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

100
contaminants tested
10
detected
487
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
San Bernardino

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.

0
health-based violations
8
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Archived 2021-01-01 → 2023-12-31
MR Monitoring Resolved 1993-07-01
MR Monitoring Archived 1981-10-01 → 1982-09-30
MR Monitoring Archived 1980-10-30 → 1981-10-29
Other Monitoring Archived 1980-07-30 → 1980-08-29
Other Monitoring Archived 1979-10-30 → 1979-11-29

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2938 µg/L 29%
of the EPA limit 10000 µg/L
 44/48 SYR4 2012–2019
Fluoride
530 µg/L 13%
of the EPA limit 4000 µg/L
 10/10 SYR4 2012–2019
Nitrate-Nitrite
2900 µg/L 29%
of the EPA limit 10000 µg/L
 6/8 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2027
Arsenic
4.6 µg/L 46%
of the EPA limit 10 µg/L
 2/9 SYR4 2012–2019
Copper
100 µg/L 7.7%
of the EPA limit 1300 µg/L
 1/10 SYR4 2012–2019
Chromium
17 µg/L 17%
of the EPA limit 100 µg/L
 1/9 SYR4 2012–2019
Combined Uranium
1.639 µg/L 5.5%
of the EPA limit 30 µg/L
 1/4 SYR4 2017–2019
Lead
8.4 µg/L 56%
of the EPA limit 15 µg/L
 1/9 SYR4 2012–2019
Lithium
9.45 µg/L
No EPA limit set
 1/6 UCMR-5 2024
90 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MURENA, BETH
Phone
760-247-3730
Email
rmwc1954@gmail.com

Frequently asked questions about Rancheritos Mwc

Is Rancheritos Mwc tap water safe to drink?

EPA monitoring detected 10 contaminants in Rancheritos 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 Rancheritos Mwc's water?

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

How many people does Rancheritos Mwc serve?

Rancheritos Mwc reports serving 487 people in California, per its EPA record.

Has Rancheritos Mwc had any water quality violations?

The EPA has 8 violations on file for Rancheritos Mwc, 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.