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Tap water quality report

Imperial, City of

EPA monitoring tested this supplier for 106 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

106
contaminants tested
18
detected
21,591
people served
21
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
Imperial

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

21
health-based violations
36
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Addressed 2024-10-17
TT Health-based Resolved 2018-05-01 → 2018-05-31
TT Health-based Resolved 2018-05-01 → 2018-05-31
MCL Health-based Resolved 2017-10-01 → 2017-12-31
MCL Health-based Resolved 2017-10-01 → 2017-12-31
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-01-01 → 2017-03-31

Other contaminants detected

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
45 µg/L
No EPA limit set
 101/103 SYR4 2013–2019
Chloroform
55.1 µg/L
No EPA limit set
 101/103 SYR4 2013–2019
Dibromochloromethane
35 µg/L
No EPA limit set
 101/103 SYR4 2013–2019
TTHM
140 µg/L 175%
of the EPA limit, in the worst sample — 80 µg/L
 101/103 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
41.6 µg/L 69%
of the EPA limit 60 µg/L
 99/100 SYR4 2013–2019
Dichloroacetic Acid
19.2 µg/L
No EPA limit set
 98/100 SYR4 2013–2019
Trichloroacetic Acid
32.6 µg/L
No EPA limit set
 94/100 SYR4 2013–2019
Bromoform
7.3 µg/L
No EPA limit set
 93/103 SYR4 2013–2019
Dibromoacetic Acid
8.3 µg/L
No EPA limit set
 85/100 SYR4 2013–2019
Monobromoacetic Acid
7.9 µg/L
No EPA limit set
 19/100 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Lithium
61 µg/L
No EPA limit set
 4/4 UCMR-5 2025
Barium
130 µg/L 6.5%
of the EPA limit 2000 µg/L
 2/2 SYR4 2018–2019
Fluoride
380 µg/L 9.5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2018–2019
Nitrate
410 µg/L 4.1%
of the EPA limit 10000 µg/L
 2/4 SYR4 2018–2019
Arsenic
2.6 µg/L 26%
of the EPA limit 10 µg/L
 1/2 SYR4 2018–2019
Monochloroacetic Acid
1.08 µg/L
No EPA limit set
 1/100 SYR4 2013–2019
Nitrate-Nitrite
420 µg/L 4.2%
of the EPA limit 10000 µg/L
 1/3 SYR4 2015–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LOPEZ, GASPAR
Phone
760-457-5085
Email
glopez@imperial.ca.gov

Frequently asked questions about Imperial, City of

Is Imperial, City of tap water safe to drink?

EPA monitoring detected 18 contaminants in Imperial, City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Imperial, City of's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Imperial, City of serve?

Imperial, City of reports serving 21,591 people in California, per its EPA record.

Has Imperial, City of had any water quality violations?

The EPA has 36 violations on file for Imperial, City of, of which 21 are health-based (a contaminant limit or required treatment was breached) and 2 remain open. The rest are monitoring or reporting failures.

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.