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Tap water quality report

Berryessa Estates (Lbrid)

EPA monitoring tested this supplier for 70 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
18
detected
474
people served
21
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
Napa

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.

21
health-based violations
54
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-04-01 → 2020-06-30
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-07-01 → 2019-09-30

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
Chloroform
89.4 µg/L
No EPA limit set
worst single sample: 110 µg/L
53/53 SYR4 2012–2019
TTHM
110 µg/L 138%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 160 µg/L
53/53 SYR4 2012–2019
Bromodichloromethane
31.45 µg/L
No EPA limit set
worst single sample: 42 µg/L
52/53 SYR4 2012–2019
Dibromochloromethane
22.75 µg/L
No EPA limit set
worst single sample: 33 µg/L
50/53 SYR4 2012–2019
Dichloroacetic Acid
24.8 µg/L
No EPA limit set
worst single sample: 51.5 µg/L
47/48 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
61.74 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 113 µg/L
47/48 SYR4 2012–2019
Trichloroacetic Acid
46.45 µg/L
No EPA limit set
worst single sample: 57.1 µg/L
47/48 SYR4 2012–2019
Bromoform
7.82 µg/L
No EPA limit set
worst single sample: 8.5 µg/L
18/53 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Dibromoacetic Acid
4.9075 µg/L
No EPA limit set
worst single sample: 5.32 µg/L
16/48 SYR4 2012–2019
Fluoride
169.5 µg/L 4.2%
of the EPA limit 4000 µg/L
worst single sample: 180 µg/L
8/8 SYR4 2012–2019
Monochloroacetic Acid
5.143 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
8/48 SYR4 2012–2019
Arsenic
3.08 µg/L 31%
of the EPA limit 10 µg/L
worst single sample: 3.2 µg/L
7/23 SYR4 2012–2019
Asbestos
0.9980 MFL 14%
of the EPA limit 7 MFL
worst single sample: 1 MFL
5/19 SYR4 2012–2018
Barium
214 µg/L 11%
of the EPA limit 2000 µg/L
worst single sample: 220 µg/L
4/8 SYR4 2012–2019
Chromium
1.99 µg/L 2%
of the EPA limit 100 µg/L
worst single sample: 2 µg/L
3/8 SYR4 2012–2019
Monobromoacetic Acid
1.3285 µg/L
No EPA limit set
worst single sample: 1.33 µg/L
2/48 SYR4 2012–2019
Nitrate
1220.4 µg/L 12%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
52 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, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SILKE, CHRISTOPHER
Phone
707-299-1755
Email
christopher.silke@countyofnapa.org

Frequently asked questions about Berryessa Estates (Lbrid)

Is Berryessa Estates (Lbrid) tap water safe to drink?

EPA monitoring detected 18 contaminants in Berryessa Estates (Lbrid)'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 Berryessa Estates (Lbrid)'s water?

EPA monitoring detected Chloroform, TTHM, Bromodichloromethane, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Berryessa Estates (Lbrid) serve?

Berryessa Estates (Lbrid) reports serving 474 people in California, per its EPA record.

Has Berryessa Estates (Lbrid) had any water quality violations?

The EPA has 54 violations on file for Berryessa Estates (Lbrid), of which 21 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.