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Tap water quality report

Malta City of

EPA monitoring tested this supplier for 73 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
18
detected
1,800
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Local government
Counties served
Phillips

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
3,086
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-01-01 → 2025-12-31
MR Monitoring Resolved 2025-01-01 → 2025-12-31
MR Monitoring Resolved 2025-01-01 → 2025-12-31
MR Monitoring Resolved 2024-12-30
MR Monitoring Resolved 2024-12-30
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2021-12-30
MR Monitoring Resolved 2021-12-30

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
848.5 µg/L 8.5%
of the EPA limit 10000 µg/L
worst single sample: 900 µg/L
64/64 SYR4 2012–2019
Copper
650 µg/L 50%
of the EPA limit 1300 µg/L
 20/20 SYR4 2014
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2026
TTHM
25.3 µg/L 32%
of the EPA limit 80 µg/L
worst single sample: 26 µg/L
8/16 SYR4 2013–2019
Bromodichloromethane
6.59 µg/L
No EPA limit set
worst single sample: 6.8 µg/L
7/16 SYR4 2013–2019
Bromoform
6.36 µg/L
No EPA limit set
worst single sample: 6.9 µg/L
7/16 SYR4 2013–2019
Dibromochloromethane
9.68 µg/L
No EPA limit set
worst single sample: 9.8 µg/L
7/16 SYR4 2013–2019
Chloroform
4.175 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
6/16 SYR4 2013–2019
Fluoride
375 µg/L 9.4%
of the EPA limit 4000 µg/L
worst single sample: 400 µg/L
6/8 SYR4 2012–2013
Lead
93 µg/L 620%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
 6/20 SYR4 2014
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 5/8 SYR4 2012–2013
Combined Uranium
13.55 µg/L 45%
of the EPA limit 30 µg/L
worst single sample: 14 µg/L
4/4 SYR4 2016
Dibromoacetic Acid
4.205 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
4/4 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
5.565 µg/L 9.3%
of the EPA limit 60 µg/L
worst single sample: 5.7 µg/L
4/4 SYR4 2014–2019
Dichloroacetic Acid
1.088 µg/L
No EPA limit set
worst single sample: 1.1 µg/L
3/4 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
6.085 pCi/L 41%
of the EPA limit 15 pCi/L
worst single sample: 6.2 pCi/L
2/4 SYR4 2016
Trichloroacetic Acid
1.262 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
2/4 SYR4 2014–2019
Barium
50 µg/L 2.5%
of the EPA limit 2000 µg/L
 1/8 SYR4 2012–2013
55 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DEMARAIS, JOHN M
Phone
406-301-1075
Email
[email protected]

Frequently asked questions about Malta City of

Is Malta City of tap water safe to drink?

EPA monitoring detected 18 contaminants in Malta 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 Malta City of's water?

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

How many people does Malta City of serve?

Malta City of reports serving 1,800 people in Montana, per its EPA record.

Has Malta City of had any water quality violations?

The EPA has 3086 violations on file for Malta 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.