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Tap water quality report

Mount Madonna Center

EPA monitoring tested this supplier for 67 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

67
contaminants tested
7
detected
170
people served
3
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Santa Cruz

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.

3
health-based violations
18
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2009-04-01 → 2009-04-30
MCL Health-based Resolved 2009-04-01 → 2009-04-30
MCL Health-based Resolved 2009-04-01 → 2009-04-30
MON Monitoring Resolved 2025-04-01 → 2025-04-30
MON Monitoring Resolved 2025-04-01 → 2025-04-30
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2008-03-01 → 2008-03-31
MR Monitoring Resolved 2008-03-01 → 2008-03-31
MR Monitoring Resolved 2008-03-01 → 2008-03-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
700 µg/L 7%
of the EPA limit 10000 µg/L
 10/40 SYR4 2017–2019
Barium
150 µg/L 7.5%
of the EPA limit 2000 µg/L
 5/5 SYR4 2017–2019
Fluoride
390 µg/L 9.8%
of the EPA limit 4000 µg/L
 5/5 SYR4 2017–2019
Nitrate-Nitrite
570 µg/L 5.7%
of the EPA limit 10000 µg/L
 3/10 SYR4 2017–2019
Arsenic
0.5400 µg/L 5.4%
of the EPA limit 10 µg/L
 1/10 SYR4 2017–2019
Lead
0.0025 mg/L 17%
of the EPA limit 0.0150 mg/L
 1/1 LCR 2022
Lead
0.4300 µg/L 2.9%
of the EPA limit 15 µg/L
 1/5 SYR4 2017–2019
60 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GORESKY, SOMA
Phone
408-639-3165
Email
soma@mountmadonna.org

Frequently asked questions about Mount Madonna Center

Is Mount Madonna Center tap water safe to drink?

EPA monitoring detected 7 contaminants in Mount Madonna Center'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 Mount Madonna Center's water?

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

How many people does Mount Madonna Center serve?

Mount Madonna Center reports serving 170 people in California, per its EPA record.

Has Mount Madonna Center had any water quality violations?

The EPA has 18 violations on file for Mount Madonna Center, of which 3 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.