What was found in ZIP 95621
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 Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 2/3 | SYR4 |
| Nitrate | 6440 µg/L 64% of the EPA limit 10000 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2019 | 2/3 | SYR4 |
| Fluoride | 260 µg/L 6.5% of the EPA limit 4000 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 2/3 | SYR4 |
| Barium | 200 µg/L 10% of the EPA limit 2000 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 2/3 | SYR4 |
| Copper | 162.9 µg/L 13% of the EPA limit 1300 µg/L Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 2/3 | SYR4 |
| Lithium | 60 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025
Highest in the ZIP: 86.6 µg/L — CAL AM - LINCOLN OAKS · 48,094 people · 2024 | 3/3 | UCMR-5 |
| TTHM | 51 µg/L 64% of the EPA limit 80 µg/L Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Chloroform | 48.4 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.45 µg/L 54% of the EPA limit 60 µg/L Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Chromium | 28.5 µg/L 28% of the EPA limit 100 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 1/3 | SYR4 |
| Trichloroacetic Acid | 18.55 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 14 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 7.5841 µg/L 25% of the EPA limit 30 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 2/3 | SYR4 |
| Tetrachloroethylene | 5.58 µg/L 112% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2019 | 1/3 | SYR4 |
| Arsenic | 4.51 µg/L 45% of the EPA limit 10 µg/L Highest in the ZIP: CITRUS HEIGHTS WATER DISTRICT · 67,818 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 3.46 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 2.875 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Bromoform | 1.39 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2019 | 1/3 | SYR4 |
| Trichloroethylene | 0.7500 µg/L 15% of the EPA limit 5 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2019 | 1/3 | SYR4 |
| Ethylene Dibromide | 0.0300 µg/L 60% of the EPA limit 0.0500 µg/L Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2018 | 1/3 | SYR4 |
| Pfpea | 0.0071 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025 | 1/3 | UCMR-5 |
| PFHXS | 0.0058 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025 | 1/3 | UCMR-5 |
| Pfhxa | 0.0057 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0047 µg/L No EPA limit set Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025 | 1/3 | UCMR-5 |
| Pfhpa | 0.0030 µg/L No EPA limit set Highest in the ZIP: CAL AM - LINCOLN OAKS · 48,094 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SACRAMENTO SUBURBAN WATER DISTRICT · 194,444 people · 2025
Highest in the ZIP: 0.0010 mg/L — CAL AM - LINCOLN OAKS · 48,094 people · 2025 | 3/3 | 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 95621
| Supplier | State | Population served |
|---|---|---|
| SACRAMENTO SUBURBAN WATER DISTRICT | CA | 194,444 |
| CITRUS HEIGHTS WATER DISTRICT | CA | 67,818 |
| CAL AM - LINCOLN OAKS | CA | 48,094 |
Frequently asked questions about ZIP 95621 tap water
Is the tap water in ZIP 95621 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 95621. 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 95621?
3 public water suppliers report EPA drinking-water monitoring for ZIP 95621. Each is listed above with its population served.
What contaminants are in ZIP 95621's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Barium, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.