Is Los Madrones Mwc Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: San Benito

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
MCL	Health-based	Resolved	1998-09-01 → 1998-09-30
MCL	Health-based	Resolved	1998-09-01 → 1998-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31
MR	Monitoring	Resolved	2016-08-01 → 2016-08-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	1130 µg/L 11% of the EPA limit 10000 µg/L	28/66	SYR4	2012–2019
Combined Uranium	20.86 µg/L 70% of the EPA limit 30 µg/L	11/11	SYR4	2012–2019
Lead	0.0126 mg/L 84% of the EPA limit 0.0150 mg/L	9/9	LCR	2023
Chloroform	17.95 µg/L No EPA limit set worst single sample: 19 µg/L	8/16	SYR4	2015–2019
TTHM	82.2 µg/L 103% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 85 µg/L	8/16	SYR4	2015–2019
Bromodichloromethane	25.7 µg/L No EPA limit set worst single sample: 26 µg/L	7/16	SYR4	2015–2019
Bromoform	33.8 µg/L No EPA limit set worst single sample: 38 µg/L	7/16	SYR4	2015–2019
Dibromoacetic Acid	14.7 µg/L No EPA limit set worst single sample: 15 µg/L	7/7	SYR4	2017–2019
Dibromochloromethane	26 µg/L No EPA limit set	7/16	SYR4	2015–2019
Dichloroacetic Acid	15.1 µg/L No EPA limit set worst single sample: 16 µg/L	7/7	SYR4	2017–2019
Total Haloacetic Acids (HAA5)	36.7 µg/L 61% of the EPA limit 60 µg/L worst single sample: 37 µg/L	7/7	SYR4	2017–2019
Trichloroacetic Acid	7 µg/L No EPA limit set	7/7	SYR4	2017–2019
Monobromoacetic Acid	2 µg/L No EPA limit set	6/7	SYR4	2017–2019
Nitrate-Nitrite	500000 µg/L 5000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L	6/8	SYR4	2013–2019
Fluoride	1280 µg/L 32% of the EPA limit 4000 µg/L worst single sample: 1400 µg/L	5/5	SYR4	2013–2019
Arsenic	3.7 µg/L 37% of the EPA limit 10 µg/L worst single sample: 4 µg/L	4/5	SYR4	2013–2019
Barium	70.6 µg/L 3.5% of the EPA limit 2000 µg/L worst single sample: 73 µg/L	4/5	SYR4	2013–2019
Chromium	30.55 µg/L 31% of the EPA limit 100 µg/L worst single sample: 34 µg/L	4/5	SYR4	2013–2019
Nitrite	490 µg/L 49% of the EPA limit 1000 µg/L worst single sample: 500 µg/L	3/12	SYR4	2013–2019
Toluene	10.07 µg/L 1% of the EPA limit 1000 µg/L worst single sample: 11 µg/L	3/13	SYR4	2012–2019
Selenium	1 µg/L 2% of the EPA limit 50 µg/L	1/5	SYR4	2013–2019

58 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: O'MALLEY SOLIS, JESSIE
Phone: 408-483-0857
Email: [email protected]

Frequently asked questions about Los Madrones Mwc

Is Los Madrones Mwc tap water safe to drink?

EPA monitoring detected 21 contaminants in Los Madrones 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 Los Madrones Mwc's water?

EPA monitoring detected Nitrate, Combined Uranium, Lead, Chloroform, TTHM, and others. The full list with the level and data source for each is above.

How many people does Los Madrones Mwc serve?

Los Madrones Mwc reports serving 36 people in California, per its EPA record.

Has Los Madrones Mwc had any water quality violations?

The EPA has 48 violations on file for Los Madrones Mwc, of which 4 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.