Tap WaterIndex

Tap water quality report

Tucson Water Corona De Tucson

EPA monitoring tested this supplier for 101 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
14
detected
10,217
people served
1
health-based violations
Water source
Ground water
Ownership
Local government
Counties served
Pima

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.

1
health-based violations
43
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-09-01 → 2001-09-30
MR Monitoring Resolved 2011-10-01 → 2011-12-31
MR Monitoring Resolved 2011-07-01 → 2011-09-30
Other Monitoring Resolved 2008-07-01
MR Monitoring Resolved 2006-10-01 → 2006-12-31
MR Monitoring Resolved 2006-10-01
MR Monitoring Resolved 2006-09-01 → 2006-09-30
MR Monitoring Resolved 2006-07-01 → 2006-09-30
Other Monitoring Resolved 2006-07-01
MR Monitoring Resolved 2006-01-01 → 2006-12-31

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
Nitrate
1540 µg/L 15%
of the EPA limit 10000 µg/L
 74/74 SYR4 2012–2019
Copper
591 µg/L 45%
of the EPA limit 1300 µg/L
 62/62 SYR4 2013–2019
Lead
2.92 µg/L 19%
of the EPA limit 15 µg/L
 62/62 SYR4 2013–2019
TTHM
12.2 µg/L 15%
of the EPA limit 80 µg/L
 16/16 SYR4 2013–2019
Lead
0.00078 mg/L 5.2%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Arsenic
4.4 µg/L 44%
of the EPA limit 10 µg/L
 11/11 SYR4 2013–2019
Barium
130 µg/L 6.5%
of the EPA limit 2000 µg/L
 11/11 SYR4 2013–2019
Fluoride
480 µg/L 12%
of the EPA limit 4000 µg/L
 11/11 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.2 µg/L 3.7%
of the EPA limit 60 µg/L
 9/16 SYR4 2013–2019
Nitrate-Nitrite
1400 µg/L 14%
of the EPA limit 10000 µg/L
 7/7 SYR4 2013–2019
Lithium
32 µg/L
No EPA limit set
 6/6 UCMR-5 2024
Selenium
2.6 µg/L 5.2%
of the EPA limit 50 µg/L
 3/11 SYR4 2013–2019
Chromium
1.7 µg/L 1.7%
of the EPA limit 100 µg/L
 1/11 SYR4 2013–2019
Combined Radium (-226 And -228)
0.5000 pCi/L 10%
of the EPA limit 5 pCi/L
 1/7 SYR4 2013–2019
87 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Tucson Water Corona De Tucson

Is Tucson Water Corona De Tucson tap water safe to drink?

EPA monitoring detected 14 contaminants in Tucson Water Corona De Tucson'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 Tucson Water Corona De Tucson's water?

EPA monitoring detected Nitrate, Copper, Lead, TTHM, Lead, and others. The full list with the level and data source for each is above.

How many people does Tucson Water Corona De Tucson serve?

Tucson Water Corona De Tucson reports serving 10,217 people, per its EPA record.

Has Tucson Water Corona De Tucson had any water quality violations?

The EPA has 43 violations on file for Tucson Water Corona De Tucson, of which 1 is health-based (a contaminant limit or required treatment was breached) and 0 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.