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Tap water quality report

Marana Dwid - Derringer

EPA monitoring tested this supplier for 80 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
13
detected
1,950
people served
11
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Private
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.

11
health-based violations
280
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2021-04-09
TT Health-based Resolved 2021-04-09
TT Health-based Resolved 2021-04-09
TT Health-based Resolved 2021-04-09
MCL Health-based Resolved 2003-03-01 → 2003-03-31

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 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
Nitrate
7600 µg/L 76%
of the EPA limit 10000 µg/L
 40/40 SYR4 2012–2019
Copper
72.4 µg/L 5.6%
of the EPA limit 1300 µg/L
worst single sample: 73000 µg/L
38/39 SYR4 2012–2018
TTHM
9.92 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 12 µg/L
17/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2024
Lead
1.975 µg/L 13%
of the EPA limit 15 µg/L
worst single sample: 2.8 µg/L
12/39 SYR4 2012–2018
Arsenic
6.225 µg/L 62%
of the EPA limit 10 µg/L
worst single sample: 6.3 µg/L
6/6 SYR4 2012–2018
Barium
157.5 µg/L 7.9%
of the EPA limit 2000 µg/L
worst single sample: 160 µg/L
6/6 SYR4 2012–2018
Chromium
4.225 µg/L 4.2%
of the EPA limit 100 µg/L
worst single sample: 4.6 µg/L
6/6 SYR4 2012–2018
Fluoride
525 µg/L 13%
of the EPA limit 4000 µg/L
worst single sample: 530 µg/L
6/6 SYR4 2012–2018
Nitrate-Nitrite
6650 µg/L 67%
of the EPA limit 10000 µg/L
worst single sample: 7100 µg/L
3/3 SYR4 2012–2015
Bromoform
4.57 µg/L
No EPA limit set
worst single sample: 4.6 µg/L
2/2 SYR4 2019
Di(2-ethylhexyl) Phthalate
0.8900 µg/L 15%
of the EPA limit 6 µg/L
 1/7 SYR4 2012–2018
Vinyl Chloride
1 µg/L 50%
of the EPA limit 2 µg/L
 1/12 SYR4 2012–2019
67 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, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GRIGGERS, TONY L
Phone
520-682-5027
Email
[email protected]

Frequently asked questions about Marana Dwid - Derringer

Is Marana Dwid - Derringer tap water safe to drink?

EPA monitoring detected 13 contaminants in Marana Dwid - Derringer'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 Marana Dwid - Derringer's water?

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

How many people does Marana Dwid - Derringer serve?

Marana Dwid - Derringer reports serving 1,950 people in Arizona, per its EPA record.

Has Marana Dwid - Derringer had any water quality violations?

The EPA has 280 violations on file for Marana Dwid - Derringer, of which 11 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.