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Tap water quality report

Oro Valley Water Countryside

EPA monitoring tested this supplier for 101 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
12
detected
4,534
people served
3
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
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.

3
health-based violations
126
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-08-01 → 2001-08-31
MCL Health-based Resolved 1999-12-01 → 1999-12-31
MCL Health-based Resolved 1999-07-01 → 1999-07-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2017-01-01 → 2017-12-31
MR Monitoring Resolved 2016-07-01 → 2017-06-30
MR Monitoring Resolved 2016-07-01 → 2017-06-30
MR Monitoring Resolved 2016-01-01 → 2016-12-31
MR Monitoring Resolved 2016-01-01 → 2016-12-31

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
Copper
190 µg/L 15%
of the EPA limit 1300 µg/L
 60/60 SYR4 2013–2019
Nitrate
1200 µg/L 12%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
TTHM
6.3 µg/L 7.9%
of the EPA limit 80 µg/L
 14/14 SYR4 2012–2019
Lead
6.7 µg/L 45%
of the EPA limit 15 µg/L
 12/60 SYR4 2013–2019
Lead
0.00050 mg/L 3.3%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Di(2-ethylhexyl) Phthalate
1.5 µg/L 25%
of the EPA limit 6 µg/L
 2/10 SYR4 2013–2019
Lithium
16 µg/L
No EPA limit set
 2/2 UCMR-5 2024
Arsenic
1.5 µg/L 15%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
23 µg/L 1.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Fluoride
510 µg/L 13%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
Nitrate-Nitrite
1100 µg/L 11%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
Xylenes, Total
0.5600 µg/L 0%
of the EPA limit 10000 µg/L
 1/2 SYR4 2016–2019
89 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 TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ABRAHAM, PETER
Phone
520-229-5000
Email
pabraham@orovalleyaz.gov

Frequently asked questions about Oro Valley Water Countryside

Is Oro Valley Water Countryside tap water safe to drink?

EPA monitoring detected 12 contaminants in Oro Valley Water Countryside'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 Oro Valley Water Countryside's water?

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

How many people does Oro Valley Water Countryside serve?

Oro Valley Water Countryside reports serving 4,534 people in Arizona, per its EPA record.

Has Oro Valley Water Countryside had any water quality violations?

The EPA has 126 violations on file for Oro Valley Water Countryside, of which 3 are 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.