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Tap water quality report

Tierra Vista Mwc

EPA monitoring tested this supplier for 53 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

53
contaminants tested
11
detected
54
people served
87
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.

87
health-based violations
120
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
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 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30

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
13 µg/L 130%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 18.3 µg/L
113/136 SYR4 2012–2019
Nitrate
678 µg/L 6.8%
of the EPA limit 10000 µg/L
 16/20 SYR4 2012–2019
Barium
12.525 µg/L 0.6%
of the EPA limit 2000 µg/L
worst single sample: 12.6 µg/L
6/6 SYR4 2014–2019
Lead
0.0041 mg/L 27%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2025
Selenium
4.16 µg/L 8.3%
of the EPA limit 50 µg/L
worst single sample: 4.2 µg/L
5/5 SYR4 2014–2019
Copper
38.4 µg/L 3%
of the EPA limit 1300 µg/L
worst single sample: 42 µg/L
4/5 SYR4 2014–2019
Fluoride
300 µg/L 7.5%
of the EPA limit 4000 µg/L
 4/4 SYR4 2014–2019
Nitrate-Nitrite
765150 µg/L 7652%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 900000 µg/L
4/4 SYR4 2014–2019
Chromium
25 µg/L 25%
of the EPA limit 100 µg/L
worst single sample: 26 µg/L
3/5 SYR4 2014–2019
Nitrite
380.02 µg/L 38%
of the EPA limit 1000 µg/L
worst single sample: 400 µg/L
2/4 SYR4 2014–2019
Combined Uranium
2.682 µg/L 8.9%
of the EPA limit 30 µg/L
 1/1 SYR4 2018
42 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, TotalAsbestosAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneLassoLeadMercuryPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
REGNIER, KASIE
Phone
808-628-0926
Email
kasie.regnier@gmail.com

Frequently asked questions about Tierra Vista Mwc

Is Tierra Vista Mwc tap water safe to drink?

EPA monitoring detected 11 contaminants in Tierra Vista 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 Tierra Vista Mwc's water?

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

How many people does Tierra Vista Mwc serve?

Tierra Vista Mwc reports serving 54 people in California, per its EPA record.

Has Tierra Vista Mwc had any water quality violations?

The EPA has 120 violations on file for Tierra Vista Mwc, of which 87 are health-based (a contaminant limit or required treatment was breached) and 2 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.