Is Riverside, IA tap water safe?
The short answer
2 of the 3 utilities serving Riverside have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Iowa’s records: Timberline Estates and Waldschmidt Subdivision.
Riverside Water Supply, which serves the most people here, has 1 result above the health goal. The worst: Arsenic at 2.5 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 Riverside’s ZIP codes, from EPA’s estimates.
- Open report
Riverside Water Supply
Iowa · serves 1,060 people · under 100 in Riverside
1 result above the health goal. The worst: Arsenic at 2.5 ppb, above the health goal.
No health-based violations since 2016
- Open report
Timberline Estates
Iowa · serves 95 people · under 100 in Riverside
1 result above the action level and 1 result above the health goal. The worst: Copper at 2.1 ppm, above the action level.
No health-based violations since 2016
- Open report
Waldschmidt Subdivision
Iowa · serves 45 people · under 100 in Riverside
1 result above the action level and 1 result above the health goal. The worst: Copper at 4.2 ppm, above the action level.
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Riverside Water Supply’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
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: 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: Arsenic
Water testing near Riverside
The 3 labs Iowa certifies closest to Riverside, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
State Hygienic Laboratory - Coralville
Coralville, IA · about 15 miles
Certified for bacteria, nitrate, organic chemicals, disinfection byproducts, PFAS, radioactivity
Ion Environmental Solutions
Muscatine, IA · about 27 miles
Certified for bacteria, nitrate
Linn County Public Health Department
Cedar Rapids, IA · about 35 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 Riverside
Which ZIP codes are in Riverside: 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 Riverside
Towns nearby with a page of their own.
What to do next
- Read Riverside Water Supply’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water