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Tap water quality report

San Simon Dwid

EPA monitoring tested this supplier for 71 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
10
detected
312
people served
397
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Private
Counties served
Cochise

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.

397
health-based violations
757
violations on file
12
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Resolved 2025-04-01 → 2025-06-30
MCL Health-based Resolved 2025-04-01 → 2025-06-30

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
Fluoride
6410 µg/L 160%
of the EPA limit, at the 95th percentile of samples — 4000 µg/L
worst single sample: 7670 µg/L
33/33 SYR4 2012–2019
Nitrate
510 µg/L 5.1%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Copper
13.035 µg/L 1%
of the EPA limit 1300 µg/L
worst single sample: 17.9 µg/L
8/15 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
TTHM
3.9125 µg/L 4.9%
of the EPA limit 80 µg/L
worst single sample: 4 µg/L
6/6 SYR4 2012–2017
Arsenic
8.63 µg/L 86%
of the EPA limit 10 µg/L
worst single sample: 8.8 µg/L
2/2 SYR4 2013–2018
Barium
10.92 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 11 µg/L
2/2 SYR4 2013–2018
Chromium
6.955 µg/L 7%
of the EPA limit 100 µg/L
worst single sample: 7 µg/L
2/2 SYR4 2013–2018
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 2/15 SYR4 2013–2019
Nitrate-Nitrite
508.4 µg/L 5.1%
of the EPA limit 10000 µg/L
worst single sample: 510 µg/L
2/2 SYR4 2012–2013
61 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 EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JOHNSON, JULIA
Phone
520-845-2451
Email
SANSIMONWID@VTC.NET

Frequently asked questions about San Simon Dwid

Is San Simon Dwid tap water safe to drink?

EPA monitoring detected 10 contaminants in San Simon 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 San Simon Dwid's water?

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

How many people does San Simon Dwid serve?

San Simon Dwid reports serving 312 people in Arizona, per its EPA record.

Has San Simon Dwid had any water quality violations?

The EPA has 757 violations on file for San Simon Dwid, of which 397 are health-based (a contaminant limit or required treatment was breached) and 12 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.