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Is Congress, AZ tap water safe?

2 utilities serve Congress, by EPA’s records. Here is what EPA’s and CDC’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

Neither of the 2 utilities serving Congress has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.

Congress Dwid, which serves the most people here, has 1 result above the health goal. The worst: Arsenic at 2.8 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.

A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Congress’s ZIP codes, from EPA’s estimates.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Congress Dwid’s water, which serves the most people here. Another utility’s report names what handles its own results.

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Every claim, and more filters, in the full report

Water testing near Congress

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab Arizona certifies.

The 3 labs Arizona certifies closest to Congress, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Bradshaw Mountain Environmental Inc.

    Prescott Valley, AZ · about 50 miles

    (928) 778-4510

  • Legend Technical Services of Arizona, Inc. DBA Legend Analytical

    Phoenix, AZ · about 64 miles

    (602) 324-6100

  • Motzz Laboratory, Inc.

    Phoenix, AZ · about 64 miles

    (602) 454-2376

All 49 certified labs for Arizona

ZIP codes in Congress

Which ZIP codes are in Congress: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Arizona Department of Health Services, Arizona certified commercial drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.