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Tap water quality report

San Jerardo Coop Ws

EPA monitoring tested this supplier for 64 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

64
contaminants tested
14
detected
249
people served
36
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.

36
health-based violations
42
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-01-01 → 2005-01-31
MCL Health-based Resolved 2005-01-01 → 2005-01-31
MCL Health-based Resolved 2005-01-01 → 2005-01-31
MCL Health-based Resolved 2004-12-01 → 2004-12-31
MCL Health-based Resolved 2004-12-01 → 2004-12-31
MCL Health-based Resolved 2004-12-01 → 2004-12-31
MCL Health-based Resolved 2004-12-01 → 2004-12-31
MCL Health-based Resolved 2004-09-01 → 2004-09-30
MCL Health-based Resolved 2004-09-01 → 2004-09-30
MCL Health-based Resolved 2004-09-01 → 2004-09-30

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
Nitrate
6000 µg/L 60%
of the EPA limit 10000 µg/L
 36/36 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2024
Arsenic
7.9 µg/L 79%
of the EPA limit 10 µg/L
worst single sample: 8 µg/L
3/3 SYR4 2013–2019
Chromium
4.9 µg/L 4.9%
of the EPA limit 100 µg/L
worst single sample: 5 µg/L
3/3 SYR4 2013–2019
Barium
29.75 µg/L 1.5%
of the EPA limit 2000 µg/L
worst single sample: 30 µg/L
2/2 SYR4 2013–2016
Fluoride
600 µg/L 15%
of the EPA limit 4000 µg/L
 2/2 SYR4 2013–2016
Selenium
3.95 µg/L 7.9%
of the EPA limit 50 µg/L
worst single sample: 4 µg/L
2/2 SYR4 2013–2016
Bromoform
4 µg/L
No EPA limit set
 1/3 SYR4 2013–2019
Copper
4 µg/L 0.3%
of the EPA limit 1300 µg/L
 1/2 SYR4 2013–2016
Dibromoacetic Acid
2 µg/L
No EPA limit set
 1/1 SYR4 2018
Nitrate-Nitrite
5500 µg/L 55%
of the EPA limit 10000 µg/L
 1/1 SYR4 2016
Nitrite
200 µg/L 20%
of the EPA limit 1000 µg/L
 1/3 SYR4 2013–2019
TTHM
4 µg/L 5%
of the EPA limit 80 µg/L
 1/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2 µg/L 3.3%
of the EPA limit 60 µg/L
 1/1 SYR4 2018
50 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, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylbenzeneLassoLeadMercuryMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VERNON, MITCHELL
Phone
831-272-2808
Email
vernonm@countyofmonterey.gov

Frequently asked questions about San Jerardo Coop Ws

Is San Jerardo Coop Ws tap water safe to drink?

EPA monitoring detected 14 contaminants in San Jerardo Coop 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 San Jerardo Coop Ws's water?

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

How many people does San Jerardo Coop Ws serve?

San Jerardo Coop Ws reports serving 249 people in California, per its EPA record.

Has San Jerardo Coop Ws had any water quality violations?

The EPA has 42 violations on file for San Jerardo Coop Ws, of which 36 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.