Is Tecumseh, KS tap water safe?
The short answer
3 of the 3 utilities serving Tecumseh have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Kansas’s records: City of Topeka, Shawnee Co RWD 8 and Douglas Co RWD 3.
City of Topeka, which serves the most people here, has 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.2 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Topeka is hard, 135 mg/L (7.9 grains per gallon). How Kansas’s water compares.
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 Tecumseh’s ZIP codes, from EPA’s estimates.
- Open report
City of Topeka
Kansas · serves 125,963 people · about 720 in Tecumseh
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.2 ppb, above EPA’s health benchmark. Hardness: hard, 135 mg/L (7.9 grains per gallon).
1 health-based violation since 2016
- Open report
Shawnee Co RWD 8
Kansas · serves 6,073 people · about 300 in Tecumseh
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 18.8 ppb, above EPA’s health benchmark.
3 health-based violations since 2016
- Open report
Douglas Co RWD 3
Kansas · serves 4,663 people · under 100 in Tecumseh
1 result above the health goal. The worst: Lead at 3.2 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 110 to 160 mg/L (6.4 to 9.4 grains per gallon).
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 City of Topeka’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, Lead
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, Lead
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, Lead
Water testing near Tecumseh
The 3 labs Kansas certifies closest to Tecumseh, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Johnson County Water Quality Laboratory
Olathe, KS · about 39 miles
Certified for bacteria, nitrate, lead and copper
Olathe Environmental Laboratory
Olathe, KS · about 39 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eurofins Kansas City
Lenexa, KS · about 46 miles
Certified for bacteria
Which ZIP codes are in Tecumseh: 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: Kansas Department of Health and Environment, drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Tecumseh
Towns nearby with a page of their own.
What to do next
- Read City of Topeka’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water