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Tap water quality report

Fillmore, CA

EPA monitoring detected 23 contaminants across the 4 water suppliers serving Fillmore. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

4
water suppliers
16,965
people served
23
contaminants found
California rankings Lead in California PFAS in California

What was found in Fillmore'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
3565 µg/L 36%
of the EPA limit 10000 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
Highest in the city: 765525 µg/L — FILLMORE IRRIGATION CO · 353 people · 2019
4/4 SYR4
Nitrate
4859 µg/L 49%
of the EPA limit 10000 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
Highest in the city: 7734.85 µg/L — SAN CAYETANO MUTUAL WATER CO · 43 people · 2019
4/4 SYR4
Fluoride
1070 µg/L 27%
of the EPA limit 4000 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
4/4 SYR4
Lithium
70 µg/L
No EPA limit set
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2024
1/4 UCMR-5
Barium
27.735 µg/L 1.4%
of the EPA limit 2000 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
4/4 SYR4
Selenium
16 µg/L 32%
of the EPA limit 50 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
4/4 SYR4
Combined Uranium
15.9728 µg/L 53%
of the EPA limit 30 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2018
3/4 SYR4
TTHM
12.155 µg/L 15%
of the EPA limit 80 µg/L
Highest in the city: ELKINS RANCH · 150 people · 2019
2/4 SYR4
Total Haloacetic Acids (HAA5)
7.2 µg/L 12%
of the EPA limit 60 µg/L
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Monochloroacetic Acid
6 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Chromium
5.8 µg/L 5.8%
of the EPA limit 100 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
3/4 SYR4
Dibromochloromethane
4.17 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
2/4 SYR4
Dibromoacetic Acid
3 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Bromodichloromethane
2.9 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Chloroform
2.875 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Dichloroacetic Acid
2.75 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Bromoform
2.5 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
2/4 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Trichloroacetic Acid
2 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Monobromoacetic Acid
1 µg/L
No EPA limit set
Highest in the city: ELKINS RANCH · 150 people · 2019
1/4 SYR4
Lead
0.7000 µg/L 4.7%
of the EPA limit 15 µg/L
Highest in the city: SAN CAYETANO MUTUAL WATER CO · 43 people · 2019
2/4 SYR4
Cadmium
0.2000 µg/L 4%
of the EPA limit 5 µg/L
Main supplier: FILLMORE WATER DEPT · 16,419 people · 2019
2/4 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: FILLMORE WATER DEPT · 16,419 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 Fillmore

SupplierPopulation served
FILLMORE WATER DEPT 16,419
FILLMORE IRRIGATION CO 353
ELKINS RANCH 150
SAN CAYETANO MUTUAL WATER CO 43

Frequently asked questions about Fillmore tap water

Is Fillmore tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Fillmore. 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 Fillmore?

4 public water suppliers report drinking-water monitoring for Fillmore, California to the EPA. Each is listed above with its population served.

What contaminants are in Fillmore's water?

The contaminants EPA monitoring detected in Fillmore include Nitrate-Nitrite, Nitrate, Fluoride, Lithium, Barium. 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.