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Tap water quality report

Mesa Del Toro Mwc

EPA monitoring tested this supplier for 54 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

54
contaminants tested
9
detected
90
people served
58
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Monterey

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.

58
health-based violations
94
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-01-01 → 2015-03-31
MCL Health-based Resolved 2015-01-01 → 2015-03-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-09-30

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
Arsenic
23.1 µg/L 231%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 30 µg/L
24/25 SYR4 2012–2017
Lead
0.0037 mg/L 25%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Fluoride
317 µg/L 7.9%
of the EPA limit 4000 µg/L
worst single sample: 330 µg/L
3/3 SYR4 2012–2017
Nitrate
678 µg/L 6.8%
of the EPA limit 10000 µg/L
 2/22 SYR4 2012–2019
Barium
26 µg/L 1.3%
of the EPA limit 2000 µg/L
 1/3 SYR4 2012–2017
Copper
3 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/3 SYR4 2012–2017
Chromium
4 µg/L 4%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2017
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/3 SYR4 2012–2017
Toluene
0.7500 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/3 SYR4 2014–2015
45 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneLassoLeadMercuryNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VORWERCK, DIANE
Phone
831-251-5475
Email
JVDV5@outlook.com

Frequently asked questions about Mesa Del Toro Mwc

Is Mesa Del Toro Mwc tap water safe to drink?

EPA monitoring detected 9 contaminants in Mesa Del Toro 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 Mesa Del Toro Mwc's water?

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

How many people does Mesa Del Toro Mwc serve?

Mesa Del Toro Mwc reports serving 90 people in California, per its EPA record.

Has Mesa Del Toro Mwc had any water quality violations?

The EPA has 94 violations on file for Mesa Del Toro Mwc, of which 58 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.