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Tap water quality report

Aborn Heights Water Mutual Association

EPA monitoring tested this supplier for 57 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

57
contaminants tested
8
detected
45
people served
17
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Santa Clara

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.

17
health-based violations
53
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 2004-10-01 → 2004-10-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1994-04-01 → 1994-04-30
MCL Health-based Resolved 1994-04-01 → 1994-04-30
MCL Health-based Resolved 1994-04-01 → 1994-04-30
MCL Health-based Resolved 1994-04-01 → 1994-04-30

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
8895 µg/L 89%
of the EPA limit 10000 µg/L
worst single sample: 9300 µg/L
30/32 SYR4 2012–2019
Lead
0.0076 mg/L 51%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Fluoride
647 µg/L 16%
of the EPA limit 4000 µg/L
worst single sample: 650 µg/L
3/3 SYR4 2012–2018
Selenium
6.2 µg/L 12%
of the EPA limit 50 µg/L
worst single sample: 6.3 µg/L
3/3 SYR4 2012–2018
Bromoform
8.22 µg/L
No EPA limit set
 1/2 SYR4 2015–2018
Dibromoacetic Acid
2.6 µg/L
No EPA limit set
 1/2 SYR4 2015–2018
TTHM
8.22 µg/L 10%
of the EPA limit 80 µg/L
 1/2 SYR4 2015–2018
Total Haloacetic Acids (HAA5)
2.6 µg/L 4.3%
of the EPA limit 60 µg/L
 1/2 SYR4 2015–2018
49 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, TotalArsenicAtrazineBariumBenzeneBeryllium, TotalBromodichloromethaneChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDalaponDibromochloromethaneDichloroacetic AcidDinosebEthylbenzeneLassoLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PHELAN, JOHN
Phone
408-274-7160
Email
jphelan486@aol.com

Frequently asked questions about Aborn Heights Water Mutual Association

Is Aborn Heights Water Mutual Association tap water safe to drink?

EPA monitoring detected 8 contaminants in Aborn Heights Water Mutual Association'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 Aborn Heights Water Mutual Association's water?

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

How many people does Aborn Heights Water Mutual Association serve?

Aborn Heights Water Mutual Association reports serving 45 people in California, per its EPA record.

Has Aborn Heights Water Mutual Association had any water quality violations?

The EPA has 53 violations on file for Aborn Heights Water Mutual Association, of which 17 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.