Non-Transient Non-Community · PWSID NV0001148

Diamond Plastics

Serves 38 peopleGroundwaterOwner: PrivateReno, Nevada
Nothing open right now.

On record since 2016: 49 violations. 25 over the limit · 24 missed or late tests. Most recent began 2025-07-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

25Over the limit
0Treatment lapse
24Missed or late test
0Notice or report

More violations on record than 92% of active water systems in Nevada. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152016 · Over the limit: 22017 · Over the limit: 82017 · Over the limit: 82017 · Over the limit: 82017 · Missed or late test: 12018 · Over the limit: 82018 · Over the limit: 82018 · Over the limit: 82018 · Missed or late test: 212018 · Missed or late test: 212018 · Missed or late test: 212018 · Missed or late test: 212018 · Missed or late test: 212018 · Missed or late test: 212018 · Missed or late test: 212019 · Over the limit: 42019 · Over the limit: 420202023 · Missed or late test: 22025 · Over the limit: 32025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
51% over the limit · 2549% missed or late test · 24

Across Nevada, 77% of violations are missed or late tests and 9% are water over a limit.

How far over the limit

at the limit2×5×10×100×+ArsenicAntimony, Total2025-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2025-04-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2025-01-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2019-04-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2019-04-01 · Antimony, Total: measured 0.007000 MG/L vs limit 0.006000 MG/L (1.2×)2019-01-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2019-01-01 · Antimony, Total: measured 0.008000 MG/L vs limit 0.006000 MG/L (1.3×)2018-10-01 · Antimony, Total: measured 0.007000 MG/L vs limit 0.006000 MG/L (1.2×)2018-10-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2018-07-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2018-07-01 · Antimony, Total: measured 0.008000 MG/L vs limit 0.006000 MG/L (1.3×)2018-04-01 · Antimony, Total: measured 0.009000 MG/L vs limit 0.006000 MG/L (1.5×)2018-04-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2018-01-01 · Antimony, Total: measured 0.0100 MG/L vs limit 0.006000 MG/L (1.7×)2018-01-01 · Arsenic: measured 0.0250 MG/L vs limit 0.0100 MG/L (2.5×)2017-10-01 · Antimony, Total: measured 0.0110 MG/L vs limit 0.006000 MG/L (1.8×)2017-10-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2017-07-01 · Antimony, Total: measured 0.0110 MG/L vs limit 0.006000 MG/L (1.8×)2017-07-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2017-04-01 · Arsenic: measured 0.0280 MG/L vs limit 0.0100 MG/L (2.8×)2017-04-01 · Antimony, Total: measured 0.0100 MG/L vs limit 0.006000 MG/L (1.7×)2017-01-01 · Antimony, Total: measured 0.008700 MG/L vs limit 0.006000 MG/L (1.4×)2017-01-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2016-10-01 · Antimony, Total: measured 0.006300 MG/L vs limit 0.006000 MG/L (1.1×)2016-10-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 6 results on file · action level 15 ppb

8 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-07-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2025-01-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  4. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  5. 2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  6. 2019-04-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LBack in compliance
  7. 2019-04-01Antimony, TotalMCL, Averagemeasured 0.007000 MG/L · limit 0.006000 MG/LBack in compliance
  8. 2019-01-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  9. 2019-01-01Antimony, TotalMCL, Averagemeasured 0.008000 MG/L · limit 0.006000 MG/LBack in compliance
  10. 2018-10-01Antimony, TotalMCL, Averagemeasured 0.007000 MG/L · limit 0.006000 MG/LBack in compliance
  11. 2018-10-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2018-07-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  13. 2018-07-01Antimony, TotalMCL, Averagemeasured 0.008000 MG/L · limit 0.006000 MG/LBack in compliance
  14. 2018-04-01Antimony, TotalMCL, Averagemeasured 0.009000 MG/L · limit 0.006000 MG/LBack in compliance
  15. 2018-04-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2018-01-01StyreneMonitoring, RegularBack in compliance
  17. 2018-01-01EthylbenzeneMonitoring, RegularBack in compliance
  18. 2018-01-01TolueneMonitoring, RegularBack in compliance
  19. 2018-01-01BenzeneMonitoring, RegularBack in compliance
  20. 2018-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  21. 2018-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  22. 2018-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  23. 2018-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  24. 2018-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  25. 2018-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
Show the other 24 entries
  1. 2018-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  2. 2018-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  3. 2018-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  4. 2018-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  5. 2018-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  6. 2018-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  7. 2018-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  8. 2018-01-01DichloromethaneMonitoring, RegularBack in compliance
  9. 2018-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  10. 2018-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  11. 2018-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  12. 2018-01-01Antimony, TotalMCL, Averagemeasured 0.0100 MG/L · limit 0.006000 MG/LBack in compliance
  13. 2018-01-01ArsenicMCL, Averagemeasured 0.0250 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2017-10-01Antimony, TotalMCL, Averagemeasured 0.0110 MG/L · limit 0.006000 MG/LBack in compliance
  15. 2017-10-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2017-07-01Antimony, TotalMCL, Averagemeasured 0.0110 MG/L · limit 0.006000 MG/LBack in compliance
  17. 2017-07-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LBack in compliance
  18. 2017-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  19. 2017-04-01ArsenicMCL, Averagemeasured 0.0280 MG/L · limit 0.0100 MG/LBack in compliance
  20. 2017-04-01Antimony, TotalMCL, Averagemeasured 0.0100 MG/L · limit 0.006000 MG/LBack in compliance
  21. 2017-01-01Antimony, TotalMCL, Averagemeasured 0.008700 MG/L · limit 0.006000 MG/LBack in compliance
  22. 2017-01-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LBack in compliance
  23. 2016-10-01Antimony, TotalMCL, Averagemeasured 0.006300 MG/L · limit 0.006000 MG/LBack in compliance
  24. 2016-10-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance

System details

Population served38
Service connections1
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerPrivate
StatusActive
CityReno
EPA ZIP on file89431

Areas served

  • Humboldt County

Reading this record

Diamond Plastics is a non-transient non-community that draws from groundwater and serves about 38 people in Reno, Nevada. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.