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Tap water quality report

Sidney City of

EPA monitoring tested this supplier for 98 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

98
contaminants tested
16
detected
5,000
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Local government
Counties served
Richland

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.

0
health-based violations
4
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2004-10-01
MR Monitoring Resolved 2004-10-01
MR Monitoring Resolved 2004-10-01
MR Monitoring Resolved 2004-10-01

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
Copper
230.1 µg/L 18%
of the EPA limit 1300 µg/L
worst single sample: 268 µg/L
47/49 SYR4 2014–2017
Nitrate-Nitrite
5020 µg/L 50%
of the EPA limit 10000 µg/L
worst single sample: 5780 µg/L
42/46 SYR4 2012–2019
Lead
33.2 µg/L 221%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 36 µg/L
25/49 SYR4 2014–2017
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Bromodichloromethane
7.46 µg/L
No EPA limit set
worst single sample: 9.5 µg/L
13/16 SYR4 2012–2019
Chloroform
3.82 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
13/16 SYR4 2012–2019
Dibromochloromethane
9.94 µg/L
No EPA limit set
worst single sample: 13 µg/L
13/16 SYR4 2012–2019
TTHM
24.8 µg/L 31%
of the EPA limit 80 µg/L
worst single sample: 32 µg/L
13/16 SYR4 2012–2019
Bromoform
3.95 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
11/16 SYR4 2012–2019
Dibromoacetic Acid
2.365 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
10/10 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.31 µg/L 5.5%
of the EPA limit 60 µg/L
worst single sample: 3.4 µg/L
10/10 SYR4 2012–2019
Trichloroacetic Acid
0.7440 µg/L
No EPA limit set
worst single sample: 0.7500 µg/L
3/10 SYR4 2012–2019
Combined Uranium
5.8 µg/L 19%
of the EPA limit 30 µg/L
worst single sample: 6 µg/L
2/2 SYR4 2017
Dichloroacetic Acid
1.0835 µg/L
No EPA limit set
worst single sample: 1.1 µg/L
2/10 SYR4 2012–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2017
Lithium
37.7 µg/L
No EPA limit set
 2/2 UCMR-5 2025
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HINTZ, JEFF
Phone
406-433-2809

Frequently asked questions about Sidney City of

Is Sidney City of tap water safe to drink?

EPA monitoring detected 16 contaminants in Sidney 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 Sidney City of's water?

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

How many people does Sidney City of serve?

Sidney City of reports serving 5,000 people in Montana, per its EPA record.

Has Sidney City of had any water quality violations?

The EPA has 4 violations on file for Sidney City of, of which 0 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.