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Silver Knolls Mutual Water Company

EPA monitoring tested this supplier for 82 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

82
contaminants tested
16
detected
120
people served
154
health-based violations
Nevada rankingsLead in NevadaPFAS in Nevada
Water source
Ground water
Ownership
Private
Counties served
Washoe

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.

154
health-based violations
648
violations on file
17
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-04-01 → 2025-06-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Arsenic
15 µg/L 150%
of the EPA limit, in the worst sample — 10 µg/L
 225/227 SYR4 2012–2019
Nitrate
1300 µg/L 13%
of the EPA limit 10000 µg/L
 14/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
Copper
24 µg/L 1.8%
of the EPA limit 1300 µg/L
 5/7 SYR4 2014–2018
Nitrate-Nitrite
1400 µg/L 14%
of the EPA limit 10000 µg/L
 5/6 SYR4 2013–2017
Bromoform
1.5 µg/L
No EPA limit set
 3/6 SYR4 2012–2019
Combined Uranium
2 µg/L 6.7%
of the EPA limit 30 µg/L
 3/3 SYR4 2012–2017
Barium
17 µg/L 0.9%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
 2/2 SYR4 2014–2017
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Selenium
4 µg/L 8%
of the EPA limit 50 µg/L
 2/2 SYR4 2014–2017
TTHM
0.8900 µg/L 1.1%
of the EPA limit 80 µg/L
 2/5 SYR4 2012–2019
Combined Radium (-226 And -228)
0.6000 pCi/L 12%
of the EPA limit 5 pCi/L
 1/4 SYR4 2012–2015
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 1/6 SYR4 2017–2018
Nitrite
80 µg/L 8%
of the EPA limit 1000 µg/L
 1/4 SYR4 2013–2017
Tetrachloroethylene
0.6000 µg/L 12%
of the EPA limit 5 µg/L
 1/13 SYR4 2012–2019
66 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
POPE, TINA
Phone
775-972-3975
Email
halfassranch420@gmail.com

Frequently asked questions about Silver Knolls Mutual Water Company

Is Silver Knolls Mutual Water Company tap water safe to drink?

EPA monitoring detected 16 contaminants in Silver Knolls Mutual Water Company'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 Silver Knolls Mutual Water Company's water?

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

How many people does Silver Knolls Mutual Water Company serve?

Silver Knolls Mutual Water Company reports serving 120 people in Nevada, per its EPA record.

Has Silver Knolls Mutual Water Company had any water quality violations?

The EPA has 648 violations on file for Silver Knolls Mutual Water Company, of which 154 are health-based (a contaminant limit or required treatment was breached) and 17 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.