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Tap water quality report

Fresno, CA

EPA monitoring detected 54 contaminants across the 37 water suppliers serving Fresno. 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.

37
water suppliers
623,411
people served
54
contaminants found
California rankings Lead in California PFAS in California

What was found in Fresno'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
6890 µg/L 69%
of the EPA limit 10000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 435000 µg/L — BAKMAN WATER COMPANY · 17,393 people · 2019
10/37 SYR4
Nitrate
9718 µg/L 97%
of the EPA limit 10000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 10450 µg/L — FCSA 14 - BELMONT MANOR · 115 people · 2019
33/37 SYR4
Nitrite
770 µg/L 77%
of the EPA limit 1000 µg/L
Highest in the city: ELM COURT · 64 people · 2019
4/37 SYR4
Fluoride
180 µg/L 4.5%
of the EPA limit 4000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 547 µg/L — EASTON ESTATES WATER COMPANY · 302 people · 2018
29/37 SYR4
Endothall
383.35 µg/L 383%
of the EPA limit, at the 95th percentile of samples — 100 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Copper
306 µg/L 24%
of the EPA limit 1300 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
20/37 SYR4
TTHM
14 µg/L 18%
of the EPA limit 80 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 260 µg/L — FCSA 30 - EL PORVENIR · 241 people · 2019
14/37 SYR4
Barium
216 µg/L 11%
of the EPA limit 2000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
26/37 SYR4
Total Haloacetic Acids (HAA5)
7.165 µg/L 12%
of the EPA limit 60 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 177 µg/L — FCSA 30 - EL PORVENIR · 241 people · 2019
10/37 SYR4
Chloroform
12.25 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 142.5 µg/L — FCSA 30 - EL PORVENIR · 241 people · 2019
13/37 SYR4
Toluene
1.453 µg/L 0.1%
of the EPA limit 1000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 114.29 µg/L — BAKMAN WATER COMPANY · 17,393 people · 2019
3/37 SYR4
Asbestos
103.75 MFL 1482%
of the EPA limit, at the 95th percentile of samples — 7 MFL
Highest in the city: FCWWD 41/SHAVER LAKE · 2,722 people · 2019
1/37 SYR4
Dibromochloromethane
2.5 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 93.75 µg/L — PAPPAS & CO (MENDOTA) · 36 people · 2019
11/37 SYR4
Bromodichloromethane
3.295 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 92.7 µg/L — FCSA 30 - EL PORVENIR · 241 people · 2019
12/37 SYR4
Dichloroacetic Acid
4.74 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 69.55 µg/L — FCSA 30 - EL PORVENIR · 241 people · 2019
10/37 SYR4
Arsenic
6.36 µg/L 64%
of the EPA limit 10 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 58.6 µg/L — FCWWD 37/MILE HIGH · 129 people · 2019
32/37 SYR4
Trichloroacetic Acid
2.76 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 56.1 µg/L — FCSA 32 - CANTUA CREEK · 462 people · 2019
10/37 SYR4
Bromoform
1.725 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 55.75 µg/L — FCSA 49 - FIVE POINTS · 440 people · 2019
9/37 SYR4
Combined Uranium
28.31 µg/L 94%
of the EPA limit 30 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 54.5072 µg/L — FCWWD 41/SHAVER LAKE · 2,722 people · 2019
8/37 SYR4
Selenium
52.5 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 50 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
10/37 SYR4
Chromium
39.9 µg/L 40%
of the EPA limit 100 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
22/37 SYR4
Lead
37.1 µg/L 247%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
10/37 SYR4
Dibromoacetic Acid
1.19 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 31 µg/L — PAPPAS & CO (MENDOTA) · 36 people · 2019
8/37 SYR4
Monobromoacetic Acid
21.4 µg/L
No EPA limit set
Highest in the city: FCSA 32 - CANTUA CREEK · 462 people · 2019
8/37 SYR4
Trichloroethylene
18 µg/L 360%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
2/37 SYR4
Cyanide
17 µg/L 8.5%
of the EPA limit 200 µg/L
Highest in the city: FCSA 10A - MANSIONETTE ESTATES · 81 people · 2014
5/37 SYR4
Monochloroacetic Acid
2 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 15.3 µg/L — FCSA 32 - CANTUA CREEK · 462 people · 2019
9/37 SYR4
Di(2-ethylhexyl) Phthalate
7.2 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 6 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
Highest in the city: 9 µg/L — FCWWD 41/SHAVER LAKE · 2,722 people · 2016
2/37 SYR4
Tetrachloroethylene
9 µg/L 180%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
4/37 SYR4
Combined Radium (-226 And -228)
5.854 pCi/L 117%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Highest in the city: FCWWD 40 - SHAVER SPRINGS · 196 people · 2019
2/37 SYR4
cis-1,2-Dichloroethylene
5.12 µg/L 7.3%
of the EPA limit 70 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Xylenes, Total
1.9 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
1,1-Dichloroethylene
1.855 µg/L 27%
of the EPA limit 7 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Antimony, Total
0.9504 µg/L 16%
of the EPA limit 6 µg/L
Highest in the city: FCWWD 41/SHAVER LAKE · 2,722 people · 2019
2/37 SYR4
Cadmium
0.7230 µg/L 14%
of the EPA limit 5 µg/L
Highest in the city: FCWWD 37/MILE HIGH · 129 people · 2018
4/37 SYR4
Dichloromethane
0.6900 µg/L 14%
of the EPA limit 5 µg/L
Highest in the city: MANNING GARDENS CARE CENTER INC · 170 people · 2019
1/37 SYR4
Styrene
0.5200 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Chlorobenzene
0.5100 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
trans-1,2-Dichloroethylene
0.5100 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Mercury
0.5060 µg/L 25%
of the EPA limit 2 µg/L
Highest in the city: BAKMAN WATER COMPANY · 17,393 people · 2019
4/37 SYR4
1,2-DIBROMO-3-CHLOROPROPANE
0.3100 µg/L 155%
of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
8/37 SYR4
Ethylene Dibromide
0.1400 µg/L 280%
of the EPA limit, at the 95th percentile of samples — 0.0500 µg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2019
1/37 SYR4
Beryllium, Total
0.0720 µg/L 1.8%
of the EPA limit 4 µg/L
Highest in the city: FCWWD 41/SHAVER LAKE · 2,722 people · 2019
1/37 SYR4
Pfpea
0.0470 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
2/37 UCMR-5
Pfhxa
0.0340 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
2/37 UCMR-5
Pfhpa
0.0310 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
2/37 UCMR-5
PFHXS
0.0300 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
1/37 UCMR-5
PFOS
0.0300 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
1/37 UCMR-5
Pfba
0.0260 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
2/37 UCMR-5
PFOA
0.0160 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
2/37 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: CITY OF FRESNO · 545,716 people · 2025
Highest in the city: 0.0130 mg/L — FCSA 30 - EL PORVENIR · 241 people · 2023
37/37 LCR
PFBS
0.0086 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
Highest in the city: 0.0130 µg/L — CALIFORNIA STATE UNIVERSITY FRESNO · 41,000 people · 2023
2/37 UCMR-5
PFNA
0.0080 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
1/37 UCMR-5
Pfpes
0.0053 µg/L
No EPA limit set
Main supplier: CITY OF FRESNO · 545,716 people · 2025
1/37 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. 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 Fresno

SupplierPopulation served
CITY OF FRESNO 545,716
CALIFORNIA STATE UNIVERSITY FRESNO 41,000
BAKMAN WATER COMPANY 17,393
MALAGA COUNTY WATER DISTRICT 5,979
FCWWD 41/SHAVER LAKE 2,722
FCSA 47 - QUAIL LAKE ESTATES 1,988
COUNTRYSIDE CARE CENTER 1,274
FCSA 34 - MILLERTON NEW TOWN 1,117
JUVENILE JUSTICE CAMPUS 565
FCSA 32 - CANTUA CREEK 462
FCSA 49 - FIVE POINTS 440
FCSA 05 - WILDWOOD ISLAND 417
FCSA 39 - A AND B 395
FCSA 44D - MONTE VERDI 350
EASTON ESTATES WATER COMPANY 302
WOODWARD BLUFFS MHP 300
FCWWD 42/ALLUVIAL & FANCHER 291
SUNNYSIDE CONVALESCENT HOSP 275
BELMONT WATER CORPORATION 264
FCSA 30 - EL PORVENIR 241
MEADOW LAKES CLUB 240
FCWWD 40 - SHAVER SPRINGS 196
FCWWD 38/SKY HARBOUR 185
FCSA 43 - RAISIN CITY 182
MANNING GARDENS CARE CENTER INC 170
FCSA 10 - CUMORAH KNOLLS 132
FCWWD 37/MILE HIGH 129
FCSA 14 - BELMONT MANOR 115
BRITZ/COLUSA 85
FCSA 10A - MANSIONETTE ESTATES 81
BRITZ/FIVE POINTS 76
CAMDEN TRAILER PARK 75
WESTSIDE HARVESTING 72
ELM COURT 64
FCSA 34B - VENTANA HILLS 48
PAPPAS & CO (MENDOTA) 36
FCSA 44C - RIVERVIEW ESTATES 34

Frequently asked questions about Fresno tap water

Is Fresno tap water safe to drink?

EPA testing detected 54 contaminants in the water serving Fresno. 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 Fresno?

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

What contaminants are in Fresno's water?

The contaminants EPA monitoring detected in Fresno include Nitrate-Nitrite, Nitrate, Nitrite, Fluoride, Endothall. 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.