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Tap water quality report

Ponderilla Hills Lake County Water Sewer

EPA monitoring tested this supplier for 68 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
10
detected
35
people served
52
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Local government
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.

52
health-based violations
74
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2004-08-01 → 2004-08-31
MCL Health-based Resolved 2004-08-01 → 2004-08-31
MCL Health-based Resolved 2004-08-01 → 2004-08-31
MCL Health-based Resolved 2004-08-01 → 2004-08-31
MCL Health-based Resolved 2004-08-01 → 2004-08-31

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
Copper
146 µg/L 11%
of the EPA limit 1300 µg/L
worst single sample: 170 µg/L
9/10 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2019
Nitrate-Nitrite
456.5 µg/L 4.6%
of the EPA limit 10000 µg/L
worst single sample: 460 µg/L
8/9 SYR4 2012–2019
Combined Uranium
2.95 µg/L 9.8%
of the EPA limit 30 µg/L
worst single sample: 3 µg/L
2/2 SYR4 2013–2016
Gross Alpha, Excl. Radon And U
3.695 pCi/L 25%
of the EPA limit 15 pCi/L
worst single sample: 3.8 pCi/L
2/2 SYR4 2013–2016
Nitrate
400 µg/L 4%
of the EPA limit 10000 µg/L
 2/2 SYR4 2012
Barium
90 µg/L 4.5%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Fluoride
870 µg/L 22%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 1/10 SYR4 2014–2017
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/1 SYR4 2012
58 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 TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BOWEN, BRUCE
Phone
406-883-2296
Email
[email protected]

Frequently asked questions about Ponderilla Hills Lake County Water Sewer

Is Ponderilla Hills Lake County Water Sewer tap water safe to drink?

EPA monitoring detected 10 contaminants in Ponderilla Hills Lake County Water Sewer'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 Ponderilla Hills Lake County Water Sewer's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Combined Uranium, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Ponderilla Hills Lake County Water Sewer serve?

Ponderilla Hills Lake County Water Sewer reports serving 35 people in Montana, per its EPA record.

Has Ponderilla Hills Lake County Water Sewer had any water quality violations?

The EPA has 74 violations on file for Ponderilla Hills Lake County Water Sewer, of which 52 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.