City of Gypsum

What EPA’s and Kansas’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: 402 people
Connections: 236
Water source: Groundwater
Based in: Gypsum, KS
County: Saline
Owner: Local government
Hardness: Hard

The ZIP code it serves

67448

The short answer

Nothing in EPA’s and Kansas’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 1 health-based violation since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, chromium (total) and arsenic: Kansas’s own results, samples taken from Feb. 3, 2020 to March 11, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

7.5ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 7.5 ppb, in 2025, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 5.4 ppb, in 2019.

What handles it

NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

5.4ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 5.4 ppb, in 2025, below EPA’s legal limit of 60 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.9 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.32ppm

Highest yearly average, 2020 to 2026

2026, one sample: 0.28 ppm

Averaged by year, the highest was 0.32 ppm, in 2020, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, its one sample was 0.28 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.26 ppm, in 2014.

What handles it

NSF/ANSI 58 look for “Fluoride Reduction”
NSF/ANSI 53 look for “Fluoride”

Nitrate

Comes from the source

Below EPA’s limits

0.57ppm

Highest sample; found in 4 of 10

2026: not found

The highest sample, in 2021, was 0.57 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.71 ppm, in 2016.

What handles it

NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Chromium (total)

Comes from the source

Below EPA’s limits

1.6ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 1.6 ppb, in 2023, below EPA’s legal limit of 100 ppb. In 2026, the latest year on file, it wasn’t found in its one sample.

What handles it

NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
NSF/ANSI 53 look for “Chromium Reduction”

2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Lead

Hardness

Hard, 145 mg/L (8.5 grains per gallon), at its one sampling point, 2017 to 2026.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 8.5 grains per gallon, salt included Softener or salt-free conditioner?Kansas water hardness, utility by utility

Violations since 2016

Contaminant or rule	Type	Period	Measured	Status
Groundwater Rule	Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR)	May 1, 2019 to May 31, 2019	—	Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 4 monitoring or reporting violations not shown.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, chromium (total) and arsenic results here are Kansas’s own from 2020 on, with EPA’s national file for 2012 to 2019. City of Gypsum’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; Kansas’s results run from Feb. 3, 2020 to March 11, 2026.

Testing your own tap

City of Gypsum’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 Kansas certifies.

The 3 labs Kansas certifies closest to the area City of Gypsum serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

Pace Analytical Services, Inc. - Salina
Salina, KS · about 18 miles
Certified for bacteria, nitrate
(913) 599-5665
Irwin Army Community Hospital-Water Laboratory-PH-EH
Fort Riley, KS · about 45 miles
Certified for bacteria
(785) 239-7516
Meridian Analytical Laboratory - Wichita
Wichita, KS · about 71 miles
Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts
(316) 618-8787