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Tap water quality report

Hillside Colony Inc

EPA monitoring tested this supplier for 58 contaminants and detected 4. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

58
contaminants tested
4
detected
100
people served
4
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Toole

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.

4
health-based violations
42
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-09-01 → 2005-09-30
MCL Health-based Resolved 2005-09-01 → 2005-09-30
MCL Health-based Resolved 2005-09-01 → 2005-09-30
MCL Health-based Resolved 2005-09-01 → 2005-09-30
Other Monitoring Resolved 2015-07-01
Other Monitoring Resolved 2015-07-01
MR Monitoring Resolved 2015-06-01 → 2015-06-30
MR Monitoring Resolved 2015-06-01 → 2015-06-30
MR Monitoring Resolved 2015-06-01 → 2015-06-30
MR Monitoring Resolved 2012-07-01 → 2012-09-30

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
5899 µg/L 59%
of the EPA limit 10000 µg/L
worst single sample: 5920 µg/L
24/24 SYR4 2012–2019
Copper
13 µg/L 1%
of the EPA limit 1300 µg/L
 10/10 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2026
Toluene
0.6900 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/6 SYR4 2013–2019
54 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WURZ, MIKE M
Phone
406-937-2966

Frequently asked questions about Hillside Colony Inc

Is Hillside Colony Inc tap water safe to drink?

EPA monitoring detected 4 contaminants in Hillside Colony Inc'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 Hillside Colony Inc's water?

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

How many people does Hillside Colony Inc serve?

Hillside Colony Inc reports serving 100 people in Montana, per its EPA record.

Has Hillside Colony Inc had any water quality violations?

The EPA has 42 violations on file for Hillside Colony Inc, of which 4 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.