Is Montezuma, IA tap water safe?
The short answer
Neither of the 2 utilities serving Montezuma has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Iowa’s records.
Montezuma Muni Water Supply, which serves the most people here, has 2 results above the health goal. The worst: Lead at 6.2 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 Montezuma’s ZIP codes, from EPA’s estimates.
- Open report
Montezuma Muni Water Supply
Iowa · serves 1,545 people · under 100 in Montezuma
2 results above the health goal. The worst: Lead at 6.2 ppb, above the health goal.
No health-based violations since 2016
- Open report
Ponderosa Utilities Inc.
Iowa · serves 1,750 people · under 100 in Montezuma
Nothing in its records is above a health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Montezuma Muni Water Supply’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Montezuma
The 3 labs Iowa certifies closest to Montezuma, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Microbac Laboratories - Newton
Newton, IA · about 28 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
State Hygienic Laboratory - Coralville
Coralville, IA · about 49 miles
Certified for bacteria, nitrate, organic chemicals, disinfection byproducts, PFAS, radioactivity
Linn County Public Health Department
Cedar Rapids, IA · about 52 miles
Certified for bacteria, nitrate
State Hygienic Laboratory at the University of Iowa: Through the Grants-to-Counties program, private well owners in participating counties can have their water tested for total coliform bacteria and nitrate. Start with the county sanitarian at your county health department. No cost in a participating county. The Grants-to-Counties Program, State Hygienic Lab at the University of Iowa.
All 36 certified labs for IowaZIP codes in Montezuma
Which ZIP codes are in Montezuma: 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: Iowa DNR, laboratories certified for drinking water; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Montezuma
Towns nearby with a page of their own.
What to do next
- Read Montezuma Muni Water Supply’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water