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Tap water quality report

So Hi Dwid

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
503
people served
8
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground water
Ownership
Private
Counties served
Mohave

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.

8
health-based violations
71
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-09-01 → 2010-09-30
MCL Health-based Resolved 2010-09-01 → 2010-09-30
MCL Health-based Resolved 2009-12-01 → 2009-12-31
MCL Health-based Resolved 2009-12-01 → 2009-12-31
MCL Health-based Resolved 2007-09-01 → 2007-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2000-06-01 → 2000-06-30
MCL Health-based Resolved 1999-09-01 → 1999-09-30
MR Monitoring Resolved 2025-10-01 → 2025-10-31
MR Monitoring Resolved 2025-10-01 → 2025-10-31

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
Copper
266.5 µg/L 21%
of the EPA limit 1300 µg/L
worst single sample: 400 µg/L
28/30 SYR4 2013–2019
Nitrate
2400 µg/L 24%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
19.59 µg/L 131%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 45 µg/L
15/30 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Arsenic
1.9 µg/L 19%
of the EPA limit 10 µg/L
 1/1 SYR4 2012
Barium
4.2 µg/L 0.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 1/1 SYR4 2012
Fluoride
300 µg/L 7.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Nitrate-Nitrite
2100 µg/L 21%
of the EPA limit 10000 µg/L
 1/1 SYR4 2012
TTHM
24 µg/L 30%
of the EPA limit 80 µg/L
 1/1 SYR4 2012
Total Haloacetic Acids (HAA5)
4.5 µg/L 7.5%
of the EPA limit 60 µg/L
 1/1 SYR4 2012
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 EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JOHNSTON, DENISE
Phone
928-565-3540
Email
sohih2o@gmail.com

Frequently asked questions about So Hi Dwid

Is So Hi Dwid tap water safe to drink?

EPA monitoring detected 11 contaminants in So Hi 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 So Hi Dwid's water?

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

How many people does So Hi Dwid serve?

So Hi Dwid reports serving 503 people in Arizona, per its EPA record.

Has So Hi Dwid had any water quality violations?

The EPA has 71 violations on file for So Hi Dwid, of which 8 are health-based (a contaminant limit or required treatment was breached) and 1 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.