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Tap water quality report

Riverton, City of

EPA monitoring tested this supplier for 81 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
19
detected
10,330
people served
3
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
Surface water
Ownership
Local government
Counties served
Fremont

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.

3
health-based violations
12
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-06-01
TT Health-based Resolved 2021-05-01 → 2021-05-31
TT Health-based Resolved 2021-05-01 → 2021-05-31
MR Monitoring Resolved 2025-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Resolved 2004-07-01 → 2004-09-30
MR Monitoring Resolved 2004-07-01 → 2004-09-30
MR Monitoring Resolved 2004-07-01 → 2004-09-30
MR Monitoring Archived 1994-10-01 → 1994-12-31

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
TTHM
38 µg/L 48%
of the EPA limit 80 µg/L
worst single sample: 44 µg/L
94/150 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
22 µg/L 37%
of the EPA limit 60 µg/L
worst single sample: 30 µg/L
64/108 SYR4 2012–2019
Copper
545 µg/L 42%
of the EPA limit 1300 µg/L
worst single sample: 670 µg/L
59/60 SYR4 2014–2017
Chloroform
34.66 µg/L
No EPA limit set
worst single sample: 40 µg/L
55/130 SYR4 2014–2019
Bromodichloromethane
5.635 µg/L
No EPA limit set
worst single sample: 7.1 µg/L
54/130 SYR4 2014–2019
Trichloroacetic Acid
16 µg/L
No EPA limit set
worst single sample: 19 µg/L
38/88 SYR4 2014–2019
Dibromochloromethane
4.46 µg/L
No EPA limit set
worst single sample: 5 µg/L
37/130 SYR4 2014–2019
Lead
7.2 µg/L 48%
of the EPA limit 15 µg/L
worst single sample: 9 µg/L
37/60 SYR4 2014–2017
Fluoride
900 µg/L 23%
of the EPA limit 4000 µg/L
worst single sample: 2700 µg/L
30/36 SYR4 2012–2019
Dichloroacetic Acid
10.84 µg/L
No EPA limit set
worst single sample: 13 µg/L
29/88 SYR4 2014–2019
Bromoform
3.925 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
26/130 SYR4 2014–2019
Dibromoacetic Acid
0.8480 µg/L
No EPA limit set
worst single sample: 0.9400 µg/L
25/88 SYR4 2014–2019
Combined Radium (-226 And -228)
5.2 pCi/L 104%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
 20/25 SYR4 2015–2019
Gross Alpha, Excl. Radon And U
5.845 pCi/L 39%
of the EPA limit 15 pCi/L
worst single sample: 6.1 pCi/L
18/25 SYR4 2015–2019
Nitrate-Nitrite
60 µg/L 0.6%
of the EPA limit 10000 µg/L
 16/238 SYR4 2012–2019
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2023
Monochloroacetic Acid
0.8500 µg/L
No EPA limit set
 3/88 SYR4 2014–2019
Asbestos
0.2000 MFL 2.9%
of the EPA limit 7 MFL
 1/3 SYR4 2015
Combined Uranium
0.0010 µg/L 0%
of the EPA limit 30 µg/L
 1/27 SYR4 2015–2019
62 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, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WIMBER, ERIC
Phone
307-857-6891
Email
[email protected]

Frequently asked questions about Riverton, City of

Is Riverton, City of tap water safe to drink?

EPA monitoring detected 19 contaminants in Riverton, City of'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 Riverton, City of's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Copper, Chloroform, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Riverton, City of serve?

Riverton, City of reports serving 10,330 people in Wyoming, per its EPA record.

Has Riverton, City of had any water quality violations?

The EPA has 12 violations on file for Riverton, City of, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 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.