What was found in ZIP 95688
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 1000000 µg/L 10000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 2/2 | SYR4 |
| Nitrate | 3751.6 µg/L 38% of the EPA limit 10000 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Fluoride | 885.75 µg/L 22% of the EPA limit 4000 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Copper | 104.2 µg/L 8% of the EPA limit 1300 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 288.5 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 2/2 | SYR4 |
| Barium | 140 µg/L 7% of the EPA limit 2000 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 2/2 | SYR4 |
| TTHM | 61.45 µg/L 77% of the EPA limit 80 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Chromium | 112.1 µg/L 112% of the EPA limit, at the 95th percentile of samples — 100 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Chloroform | 52 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 23.5 µg/L 39% of the EPA limit 60 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Lithium | 45 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2025 | 1/2 | UCMR-5 |
| Lead | 40.36 µg/L 269% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 9.95 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 11.225 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 9.4 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.3 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019
Highest in the ZIP: 8.8385 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.368 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Arsenic | 8.05 µg/L 81% of the EPA limit 10 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 3.6495 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 2.831 µg/L 9.4% of the EPA limit 30 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.62 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 2/2 | SYR4 |
| Cadmium | 2.24 µg/L 45% of the EPA limit 5 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 2.054 pCi/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Bromoform | 1.274 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Bromate | 1.1 µg/L 11% of the EPA limit 10 µg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2017 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.095 pCi/L 22% of the EPA limit 5 pCi/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 0.9000 µg/L 1.3% of the EPA limit 70 µg/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| PFOS | 0.0100 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2025 | 1/2 | UCMR-5 |
| PFHXS | 0.0092 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2025 | 1/2 | UCMR-5 |
| PFOA | 0.0051 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2025 | 1/2 | UCMR-5 |
| PFBS | 0.0037 µg/L No EPA limit set Main supplier: CITY OF VACAVILLE · 99,650 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF VACAVILLE · 99,650 people · 2023
Highest in the ZIP: 0.00056 mg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2024 | 2/2 | LCR |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 95688
| Supplier | State | Population served |
|---|---|---|
| CITY OF VACAVILLE | CA | 99,650 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
Frequently asked questions about ZIP 95688 tap water
Is the tap water in ZIP 95688 safe to drink?
EPA testing detected 31 contaminants across the water suppliers serving ZIP 95688. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 95688?
2 public water suppliers report EPA drinking-water monitoring for ZIP 95688. Each is listed above with its population served.
What contaminants are in ZIP 95688's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.