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Tap water quality report

Osage Water District

EPA monitoring tested this supplier for 79 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
15
detected
200
people served
1
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
Ground water
Ownership
Local government
Counties served
Weston

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

1
health-based violations
10
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-08-09
MR Monitoring Resolved 2025-06-01 → 2025-06-30
MR Monitoring Unaddressed 2024-09-03
MR Monitoring Resolved 2024-08-01 → 2024-08-31
MR Monitoring Resolved 2023-10-01 → 2023-12-31
MR Monitoring Resolved 2022-04-01 → 2022-06-30
MR Monitoring Resolved 2018-01-01 → 2020-12-31
MR Monitoring Resolved 2018-01-01 → 2020-12-31
MR Monitoring Archived 1976-07-01 → 1980-06-30
MR Monitoring Archived 1976-07-01 → 1980-06-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
250 µg/L 2.5%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
173.15 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 224 µg/L
10/10 SYR4 2014–2017
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
Lead
4.75 µg/L 32%
of the EPA limit 15 µg/L
worst single sample: 5 µg/L
6/10 SYR4 2014–2017
TTHM
1.78 µg/L 2.2%
of the EPA limit 80 µg/L
worst single sample: 1.9 µg/L
5/7 SYR4 2013–2018
Arsenic
2.9 µg/L 29%
of the EPA limit 10 µg/L
worst single sample: 3 µg/L
3/3 SYR4 2012–2018
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Combined Radium (-226 And -228)
2.14 pCi/L 43%
of the EPA limit 5 pCi/L
worst single sample: 2.2 pCi/L
3/3 SYR4 2012–2018
Combined Uranium
1.9639 µg/L 6.5%
of the EPA limit 30 µg/L
worst single sample: 2 µg/L
3/3 SYR4 2012–2018
Fluoride
490 µg/L 12%
of the EPA limit 4000 µg/L
worst single sample: 500 µg/L
3/3 SYR4 2012–2018
Selenium
1.9 µg/L 3.8%
of the EPA limit 50 µg/L
worst single sample: 2 µg/L
3/3 SYR4 2012–2018
Chloroform
0.5960 µg/L
No EPA limit set
worst single sample: 0.6000 µg/L
2/7 SYR4 2013–2018
Gross Alpha, Excl. Radon And U
3.33 pCi/L 22%
of the EPA limit 15 pCi/L
worst single sample: 3.4 pCi/L
2/3 SYR4 2012–2018
Bromodichloromethane
0.6700 µg/L
No EPA limit set
 1/7 SYR4 2013–2018
Dibromochloromethane
0.6500 µg/L
No EPA limit set
 1/7 SYR4 2013–2018
64 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HEARD, JANICE
Phone
307-465-2407
Email
[email protected]

Frequently asked questions about Osage Water District

Is Osage Water District tap water safe to drink?

EPA monitoring detected 15 contaminants in Osage Water District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Osage Water District's water?

EPA monitoring detected Nitrate-Nitrite, Copper, Lead, Lead, TTHM, and others. The full list with the level and data source for each is above.

How many people does Osage Water District serve?

Osage Water District reports serving 200 people in Wyoming, per its EPA record.

Has Osage Water District had any water quality violations?

The EPA has 10 violations on file for Osage Water District, of which 1 is health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.