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Tap water quality report

Tassajara Springs Ws

EPA monitoring tested this supplier for 65 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

65
contaminants tested
17
detected
150
people served
11
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface 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.

11
health-based violations
80
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2007-09-01 → 2007-09-30
MCL Health-based Archived 2007-09-01 → 2007-09-30
MCL Health-based Archived 2007-09-01 → 2007-09-30
MCL Health-based Archived 2007-09-01 → 2007-09-30
MCL Health-based Resolved 2001-08-01 → 2001-08-31
MCL Health-based Resolved 2001-08-01 → 2001-08-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Resolved 1999-07-01 → 1999-07-31

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
200 µg/L 2%
of the EPA limit 10000 µg/L
 6/14 SYR4 2012–2017
Lead
0.0037 mg/L 25%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2027
Bromodichloromethane
3.9 µg/L
No EPA limit set
worst single sample: 4 µg/L
3/3 SYR4 2015–2019
Chloroform
3 µg/L
No EPA limit set
 3/3 SYR4 2015–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
 3/3 SYR4 2015–2019
Dibromochloromethane
3.9 µg/L
No EPA limit set
worst single sample: 4 µg/L
3/3 SYR4 2015–2019
Dichloroacetic Acid
2.9 µg/L
No EPA limit set
worst single sample: 3 µg/L
3/3 SYR4 2015–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2017
TTHM
16.2 µg/L 20%
of the EPA limit 80 µg/L
worst single sample: 17 µg/L
3/3 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
4.9 µg/L 8.2%
of the EPA limit 60 µg/L
worst single sample: 5 µg/L
3/3 SYR4 2015–2019
Barium
9.9 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 10 µg/L
2/3 SYR4 2012–2017
Copper
18.55 µg/L 1.4%
of the EPA limit 1300 µg/L
worst single sample: 19 µg/L
2/3 SYR4 2012–2017
Chromium
1.95 µg/L 2%
of the EPA limit 100 µg/L
worst single sample: 2 µg/L
2/3 SYR4 2012–2017
Nitrate-Nitrite
285005 µg/L 2850%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 300000 µg/L
2/2 SYR4 2015–2017
Nitrite
190.005 µg/L 19%
of the EPA limit 1000 µg/L
worst single sample: 200 µg/L
2/5 SYR4 2012–2017
Selenium
2.95 µg/L 5.9%
of the EPA limit 50 µg/L
worst single sample: 3 µg/L
2/3 SYR4 2012–2017
Bromoform
6 µg/L
No EPA limit set
 1/3 SYR4 2015–2019
48 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, TotalArsenicAsbestosAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneLassoLeadMercuryMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HUTTO, AMY
Phone
510-543-6237
Email
zmcmaintenance@sfzc.org

Frequently asked questions about Tassajara Springs Ws

Is Tassajara Springs Ws tap water safe to drink?

EPA monitoring detected 17 contaminants in Tassajara Springs Ws'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 Tassajara Springs Ws's water?

EPA monitoring detected Nitrate, Lead, Bromodichloromethane, Chloroform, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Tassajara Springs Ws serve?

Tassajara Springs Ws reports serving 150 people in California, per its EPA record.

Has Tassajara Springs Ws had any water quality violations?

The EPA has 80 violations on file for Tassajara Springs Ws, of which 11 are health-based (a contaminant limit or required treatment was breached) and 1 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.