← Modesto, CA

Tap water quality report

ZIP 95356 — Modesto, CA

EPA monitoring across the 1 water supplier serving ZIP 95356 in Modesto, CA detected 35 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
218,771
people served
35
contaminants found

What was found in ZIP 95356

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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
8435 µg/L 84%
of the EPA limit 10000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2018
1/1 SYR4
Nitrate
8382.07 µg/L 84%
of the EPA limit 10000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Barium
240 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Fluoride
175 µg/L 4.4%
of the EPA limit 4000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
TTHM
74.3525 µg/L 93%
of the EPA limit 80 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Chloroform
71.0875 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
43.325 µg/L 72%
of the EPA limit 60 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Combined Uranium
34.27 µg/L 114%
of the EPA limit, at the 95th percentile of samples — 30 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Trichloroethylene
24.1 µg/L 482%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Dichloroacetic Acid
23.86 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Trichloroacetic Acid
22.27 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Lithium
21 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
Tetrachloroethylene
15 µg/L 300%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Arsenic
7.4 µg/L 74%
of the EPA limit 10 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Chromium
6.4 µg/L 6.4%
of the EPA limit 100 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Selenium
6.12 µg/L 12%
of the EPA limit 50 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Bromodichloromethane
5.57 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Monochloroacetic Acid
4.92 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Dibromochloromethane
4.7525 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Bromoform
3.9155 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Gross Beta Particle Activity
3.557 pCi/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2017
1/1 SYR4
Dibromoacetic Acid
2.34 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Monobromoacetic Acid
2 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.183 pCi/L 24%
of the EPA limit 5 pCi/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2015
1/1 SYR4
1,1-Dichloroethylene
0.7300 µg/L 10%
of the EPA limit 7 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
1,2-DIBROMO-3-CHLOROPROPANE
0.3925 µg/L 196%
of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
Nitrite
0.1200 µg/L 0%
of the EPA limit 1000 µg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2019
1/1 SYR4
PFOS
0.0260 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
Lead
0.0120 mg/L 80%
of the EPA limit 0.0150 mg/L
Main supplier: MODESTO, CITY OF · 218,771 people · 2027
1/1 LCR
PFHXS
0.0093 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
PFOA
0.0086 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
Pfpea
0.0067 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
Pfhxa
0.0061 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
PFBS
0.0043 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
Pfhpa
0.0036 µg/L
No EPA limit set
Main supplier: MODESTO, CITY OF · 218,771 people · 2024
1/1 UCMR-5
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 95356

SupplierStatePopulation served
MODESTO, CITY OF CA 218,771

Frequently asked questions about ZIP 95356 tap water

Is the tap water in ZIP 95356 safe to drink?

EPA testing detected 35 contaminants across the water suppliers serving ZIP 95356. 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 95356?

1 public water supplier report EPA drinking-water monitoring for ZIP 95356. Each is listed above with its population served.

What contaminants are in ZIP 95356's water?

EPA monitoring detected Nitrate-Nitrite, Nitrate, Barium, Fluoride, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.