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Retreat at Oak Creek Dwid

What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
52 people
Connections
35
Water source
Groundwater
Based in
Oak Creek Valley, AZ
County
Yavapai
Owner
Private
The ZIP code it serves

86001

The short answer

1 result is above the health goal. The worst: Arsenic, above the health goal. 4 health-based violations since 2016.

What handles it

What was found

Arsenic and nitrate: Arizona’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2021 to 2023.

Above the health goal1

Arsenic

Comes from the source

Above the health goal

3.1ppb

Highest yearly average, 2022

Averaged by year, the highest was 3.1 ppb, in 2022: below EPA’s legal limit of 10 ppb, but above its health goal of zero. That is the only year on file.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Below EPA’s limits1

Nitrate

Comes from the source

Below EPA’s limits

0.51ppm

Highest yearly average, 2021 to 2023

2023: not found

Averaged by year, the highest was 0.51 ppm, in 2022, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, it wasn’t found.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Lead

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Revised Total Coliform RuleColiform or E. coli results required a detailed review of the system, and it or its fixes were not done on time.EPA: Treatment Technique, Level 2 Assessment (RTCR)Nov. 11, 2024—Resolved
Lead and Copper Rule RevisionsThe required inventory of lead service lines was not completed or submitted on time.EPA: LSL InventoryOct. 17, 2024—Resolved
Revised Total Coliform RuleColiform or E. coli results required a detailed review of the system, and it or its fixes were not done on time.EPA: Treatment Technique, Level 2 Assessment (RTCR)May 16, 2023—Resolved
Revised Total Coliform RuleE. coli was confirmed in the water system.EPA: Maximum Contaminant Level Violation, E. coli (RTCR)April 1, 2023 to April 30, 2023—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 8 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic and nitrate results here are Arizona’s yearly averages as CDC publishes them, from 2021 on, with EPA’s national file for 2012 to 2019. Retreat at Oak Creek Dwid’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for Arizona cover 2021 to 2023.

Testing your own tap

Retreat at Oak Creek Dwid’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Arizona certifies.

The 3 labs Arizona certifies closest to the area Retreat at Oak Creek Dwid serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Inner Basin Environmental, LLC

    Flagstaff, AZ · about 5 miles

    (928) 440-5168

  • Nortest Analytical

    Flagstaff, AZ · about 5 miles

    (928) 774-2312

  • Bradshaw Mountain Environmental Inc.

    Prescott Valley, AZ · about 56 miles

    (928) 778-4510

All 49 certified labs for Arizona

Sources

PWSID AZ0413298. Rebuilt from EPA data on Oct. 18, 2026.

Also in Yavapai County

All Arizona utilities

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