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Tap water quality report

Jackson, CA

EPA monitoring detected 12 contaminants across the 2 water suppliers serving Jackson. 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.

2
water suppliers
12,246
people served
12
contaminants found
California rankings Lead in California PFAS in California

What was found in Jackson'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
620000 µg/L 6200%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: AWA, IONE · 7,227 people · 2019
1/2 SYR4
Fluoride
730 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: AWA, IONE · 7,227 people · 2019
1/2 SYR4
TTHM
84.39999999999999 µg/L 106%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: AWA, IONE · 7,227 people · 2019
2/2 SYR4
Chloroform
81.6 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
42.999999999999986 µg/L 72%
of the EPA limit 60 µg/L
Main supplier: AWA, IONE · 7,227 people · 2019
Highest in the city: 68.61999999999999 µg/L — CITY OF JACKSON · 5,019 people · 2019
2/2 SYR4
Trichloroacetic Acid
24.359999999999996 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
Highest in the city: 47.62 µg/L — CITY OF JACKSON · 5,019 people · 2019
2/2 SYR4
Dichloroacetic Acid
15.8 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
Highest in the city: 23.5 µg/L — CITY OF JACKSON · 5,019 people · 2019
2/2 SYR4
Monochloroacetic Acid
6.145 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
2/2 SYR4
Bromodichloromethane
4.419999999999999 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
2/2 SYR4
Monobromoacetic Acid
3.94 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
1/2 SYR4
Dibromochloromethane
0.8700 µg/L
No EPA limit set
Main supplier: AWA, IONE · 7,227 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: AWA, IONE · 7,227 people · 2025
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. 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 Jackson

SupplierPopulation served
AWA, IONE 7,227
CITY OF JACKSON 5,019

Frequently asked questions about Jackson tap water

Is Jackson tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Jackson. 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 Jackson?

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

What contaminants are in Jackson's water?

The contaminants EPA monitoring detected in Jackson include Nitrate-Nitrite, Fluoride, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.