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Tap water quality report

Cottonwood Day School Bia

EPA monitoring tested this supplier for 71 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
11
detected
185
people served
5
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Federal government

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.

5
health-based violations
95
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2012-10-01 → 2012-12-31
MCL Health-based Resolved 2012-07-01 → 2012-09-30
MCL Health-based Resolved 2012-04-01 → 2012-06-30
MCL Health-based Resolved 2012-04-01 → 2012-06-30
MCL Health-based Resolved 2012-04-01 → 2012-06-30
MON Monitoring Resolved 2025-03-01 → 2025-03-31
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0042 mg/L 28%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Nitrate
870 µg/L 8.7%
of the EPA limit 10000 µg/L
 12/16 SYR4 2012–2019
Barium
73.7 µg/L 3.7%
of the EPA limit 2000 µg/L
worst single sample: 74 µg/L
3/3 SYR4 2012–2018
Chromium
14.5 µg/L 14%
of the EPA limit 100 µg/L
worst single sample: 15 µg/L
3/3 SYR4 2012–2018
Fluoride
199 µg/L 5%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
3/3 SYR4 2012–2018
TTHM
13.69 µg/L 17%
of the EPA limit 80 µg/L
worst single sample: 14 µg/L
3/3 SYR4 2013–2019
Arsenic
2.09 µg/L 21%
of the EPA limit 10 µg/L
worst single sample: 2.1 µg/L
2/3 SYR4 2012–2018
Selenium
4.56 µg/L 9.1%
of the EPA limit 50 µg/L
worst single sample: 4.7 µg/L
2/3 SYR4 2012–2018
Total Haloacetic Acids (HAA5)
1.379 µg/L 2.3%
of the EPA limit 60 µg/L
worst single sample: 1.38 µg/L
2/3 SYR4 2013–2019
Combined Uranium
13 µg/L 43%
of the EPA limit 30 µg/L
 1/1 SYR4 2014
Gross Alpha, Excl. Radon And U
1.06 pCi/L 7.1%
of the EPA limit 15 pCi/L
 1/1 SYR4 2014
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
David Propst
Phone
9287253256
Email
[email protected]

Frequently asked questions about Cottonwood Day School Bia

Is Cottonwood Day School Bia tap water safe to drink?

EPA monitoring detected 11 contaminants in Cottonwood Day School Bia'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 Cottonwood Day School Bia's water?

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

How many people does Cottonwood Day School Bia serve?

Cottonwood Day School Bia reports serving 185 people in Arizona, per its EPA record.

Has Cottonwood Day School Bia had any water quality violations?

The EPA has 95 violations on file for Cottonwood Day School Bia, of which 5 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.