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Tap water quality report

Sid - Gibson Canyon

EPA monitoring tested this supplier for 80 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
13
detected
535
people served
1
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
Solano

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.

1
health-based violations
4
violations on file
3
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
RPT Monitoring Unaddressed 2024-10-17
MR Monitoring Addressed 2023-10-01
MR Monitoring Resolved 1993-07-01 → 2000-03-01

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 27/27 LCR 2026
Bromodichloromethane
8.365 µg/L
No EPA limit set
worst single sample: 8.5 µg/L
10/10 SYR4 2018–2019
Chloroform
61.6 µg/L
No EPA limit set
worst single sample: 67 µg/L
10/10 SYR4 2018–2019
Dichloroacetic Acid
28.85 µg/L
No EPA limit set
worst single sample: 32 µg/L
10/10 SYR4 2018–2019
TTHM
70.15 µg/L 88%
of the EPA limit 80 µg/L
worst single sample: 76 µg/L
10/10 SYR4 2018–2019
Total Haloacetic Acids (HAA5)
58.25 µg/L 97%
of the EPA limit 60 µg/L
worst single sample: 65 µg/L
10/10 SYR4 2018–2019
Trichloroacetic Acid
28.95 µg/L
No EPA limit set
worst single sample: 33 µg/L
10/10 SYR4 2018–2019
Arsenic
3.175 µg/L 32%
of the EPA limit 10 µg/L
worst single sample: 3.4 µg/L
6/15 SYR4 2012–2019
Fluoride
129 µg/L 3.2%
of the EPA limit 4000 µg/L
worst single sample: 130 µg/L
3/15 SYR4 2012–2019
Dibromochloromethane
1.395 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/10 SYR4 2018–2019
Monochloroacetic Acid
2.88 µg/L
No EPA limit set
worst single sample: 2.9 µg/L
2/10 SYR4 2018–2019
Di(2-ethylhexyl) Phthalate
3.8 µg/L 63%
of the EPA limit 6 µg/L
 1/9 SYR4 2013–2017
Trichloroethylene
0.9700 µg/L 19%
of the EPA limit 5 µg/L
 1/20 SYR4 2012–2019
67 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KEATEN, CARY
Phone
707-455-4009
Email
ckeaten@sidwater.org

Frequently asked questions about Sid - Gibson Canyon

Is Sid - Gibson Canyon tap water safe to drink?

EPA monitoring detected 13 contaminants in Sid - Gibson Canyon'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 Sid - Gibson Canyon's water?

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

How many people does Sid - Gibson Canyon serve?

Sid - Gibson Canyon reports serving 535 people in California, per its EPA record.

Has Sid - Gibson Canyon had any water quality violations?

The EPA has 4 violations on file for Sid - Gibson Canyon, of which 1 is health-based (a contaminant limit or required treatment was breached) and 3 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.