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Tap water quality report

South Hills Water Users Association

EPA monitoring tested this supplier for 65 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

65
contaminants tested
6
detected
60
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lake

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
391
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Copper
90 µg/L 6.9%
of the EPA limit 1300 µg/L
worst single sample: 110 µg/L
9/10 SYR4 2014–2017
Nitrate-Nitrite
1352.5 µg/L 14%
of the EPA limit 10000 µg/L
worst single sample: 1370 µg/L
8/8 SYR4 2012–2019
Nitrate
1320 µg/L 13%
of the EPA limit 10000 µg/L
 4/4 SYR4 2016–2019
Barium
250 µg/L 13%
of the EPA limit 2000 µg/L
 2/2 SYR4 2016–2019
Fluoride
178 µg/L 4.5%
of the EPA limit 4000 µg/L
worst single sample: 180 µg/L
2/2 SYR4 2016–2019
59 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, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LEE, BOB
Phone
406-951-9518

Frequently asked questions about South Hills Water Users Association

Is South Hills Water Users Association tap water safe to drink?

EPA monitoring detected 6 contaminants in South Hills Water Users Association'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 South Hills Water Users Association's water?

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

How many people does South Hills Water Users Association serve?

South Hills Water Users Association reports serving 60 people in Montana, per its EPA record.

Has South Hills Water Users Association had any water quality violations?

The EPA has 391 violations on file for South Hills Water Users Association, 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.