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Tap water quality report

Mayer Dwid

EPA monitoring tested this supplier for 80 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
17
detected
1,400
people served
19
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Private
Counties served
Yavapai

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.

19
health-based violations
322
violations on file
3
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31

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
Arsenic
7.72 µg/L 77%
of the EPA limit 10 µg/L
worst single sample: 11 µg/L
75/75 SYR4 2012–2019
Nitrate
8535 µg/L 85%
of the EPA limit 10000 µg/L
worst single sample: 9900 µg/L
72/88 SYR4 2012–2019
Copper
428 µg/L 33%
of the EPA limit 1300 µg/L
worst single sample: 930 µg/L
69/70 SYR4 2013–2018
Lead
21.025 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 66.7 µg/L
50/70 SYR4 2013–2018
TTHM
87.28 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 103 µg/L
29/30 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
7.76 µg/L 13%
of the EPA limit 60 µg/L
worst single sample: 9.4 µg/L
25/30 SYR4 2012–2019
Fluoride
341 µg/L 8.5%
of the EPA limit 4000 µg/L
worst single sample: 380 µg/L
14/14 SYR4 2013–2019
Barium
87 µg/L 4.4%
of the EPA limit 2000 µg/L
worst single sample: 93 µg/L
13/14 SYR4 2013–2019
Bromoform
52.04 µg/L
No EPA limit set
worst single sample: 53.3 µg/L
8/8 SYR4 2019
Dibromoacetic Acid
8.105 µg/L
No EPA limit set
worst single sample: 9.4 µg/L
8/8 SYR4 2019
Dibromochloromethane
19.055 µg/L
No EPA limit set
worst single sample: 20 µg/L
8/8 SYR4 2019
Lead
0.0035 mg/L 23%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
Nitrate-Nitrite
7065 µg/L 71%
of the EPA limit 10000 µg/L
worst single sample: 7100 µg/L
8/9 SYR4 2012–2019
Bromodichloromethane
5.84 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
7/8 SYR4 2019
Chloroform
1.4 µg/L
No EPA limit set
worst single sample: 1.5 µg/L
5/8 SYR4 2019
Chromium
1.495 µg/L 1.5%
of the EPA limit 100 µg/L
worst single sample: 1.5 µg/L
2/14 SYR4 2013–2019
Selenium
6.74 µg/L 13%
of the EPA limit 50 µg/L
worst single sample: 6.8 µg/L
2/14 SYR4 2013–2019
63 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) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
POSTEMA, JERALD A
Phone
602-614-6912
Email
[email protected]

Frequently asked questions about Mayer Dwid

Is Mayer Dwid tap water safe to drink?

EPA monitoring detected 17 contaminants in Mayer Dwid'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 Mayer Dwid's water?

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

How many people does Mayer Dwid serve?

Mayer Dwid reports serving 1,400 people in Arizona, per its EPA record.

Has Mayer Dwid had any water quality violations?

The EPA has 322 violations on file for Mayer Dwid, of which 19 are health-based (a contaminant limit or required treatment was breached) and 3 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.