What was found in Shafter's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 8900 µg/L 89% of the EPA limit 10000 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2019
Highest in the city: 9600 µg/L — LLANAS CAMP FOUR WATER SYSTEM · 54 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 9530 µg/L 95% of the EPA limit 10000 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018 | 1/4 | SYR4 |
| Fluoride | 220 µg/L 5.5% of the EPA limit 4000 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018
Highest in the city: 613 µg/L — ERSKINE CREEK WC · 2,500 people · 2019 | 3/4 | SYR4 |
| Barium | 84.9 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018
Highest in the city: 88.25 µg/L — LLANAS CAMP FOUR WATER SYSTEM · 54 people · 2017 | 3/4 | SYR4 |
| TTHM | 38.4 µg/L 48% of the EPA limit 80 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 4/4 | SYR4 |
| Bromoform | 21.2 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 4/4 | SYR4 |
| Arsenic | 8.39 µg/L 84% of the EPA limit 10 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018
Highest in the city: 8.98 µg/L — ERSKINE CREEK WC · 2,500 people · 2019 | 3/4 | SYR4 |
| Combined Uranium | 2.682 µg/L 8.9% of the EPA limit 30 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018
Highest in the city: 8.1503 µg/L — ERSKINE CREEK WC · 2,500 people · 2019 | 2/4 | SYR4 |
| Dibromochloromethane | 8 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 4/4 | SYR4 |
| Selenium | 4.22 µg/L 8.4% of the EPA limit 50 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2018 | 2/4 | SYR4 |
| Dichloroacetic Acid | 4.2 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.1 µg/L 6.8% of the EPA limit 60 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 3.8 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 3.66 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 3/4 | SYR4 |
| Trichloroacetic Acid | 2 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019
Highest in the city: 2.785 µg/L — ERSKINE CREEK WC · 2,500 people · 2019 | 3/4 | SYR4 |
| Monobromoacetic Acid | 2.35 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 1/4 | SYR4 |
| Chloroform | 1.045 µg/L No EPA limit set Main supplier: SHAFTER, CITY OF · 21,915 people · 2019
Highest in the city: 1.134 µg/L — LAKE ISABELLA COMMUNITY SERVICES DIST · 500 people · 2019 | 3/4 | SYR4 |
| 1,2-Dichloropropane | 0.7000 µg/L 14% of the EPA limit 5 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 2/4 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0795 µg/L 40% of the EPA limit 0.2000 µg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SHAFTER, CITY OF · 21,915 people · 2024
Highest in the city: 0.0100 mg/L — LAKE ISABELLA COMMUNITY SERVICES DIST · 500 people · 2024 | 4/4 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Shafter
| Supplier | Population served |
|---|---|
| SHAFTER, CITY OF | 21,915 |
| ERSKINE CREEK WC | 2,500 |
| LAKE ISABELLA COMMUNITY SERVICES DIST | 500 |
| LLANAS CAMP FOUR WATER SYSTEM | 54 |
Frequently asked questions about Shafter tap water
Is Shafter tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Shafter. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Shafter?
4 public water suppliers report drinking-water monitoring for Shafter, California to the EPA. Each is listed above with its population served.
What contaminants are in Shafter's water?
The contaminants EPA monitoring detected in Shafter include Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
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.