Community Water System · PWSID CA4110012

Cuesta La Honda Guild Inc

Serves 915 peopleSurface WaterOwner: PrivateLa Honda, California
Nothing open right now.

On record since 2018: 38 violations. 4 over the limit · 34 missed or late tests. Most recent began 2021-10-01.

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

4Over the limit
0Treatment lapse
34Missed or late test
0Notice or report

More violations on record than 96% of active water systems in California. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152018 · Missed or late test: 12019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 332019 · Missed or late test: 3320202021 · Over the limit: 42021 · Over the limit: 42025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
11% over the limit · 489% missed or late test · 34

Across California, 52% of violations are missed or late tests and 29% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Total Haloacetic Acids (HAA5)2021-10-01 · Total Haloacetic Acids (HAA5): measured 0.0672 MG/L vs limit 0.0600 MG/L (1.1×)2021-07-01 · Total Haloacetic Acids (HAA5): measured 0.0696 MG/L vs limit 0.0600 MG/L (1.2×)2021-04-01 · Total Haloacetic Acids (HAA5): measured 0.0720 MG/L vs limit 0.0600 MG/L (1.2×)2021-01-01 · Total Haloacetic Acids (HAA5): measured 0.0670 MG/L vs limit 0.0600 MG/L (1.1×)
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 3 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2021-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0672 MG/L · limit 0.0600 MG/LBack in compliance
  2. 2021-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0696 MG/L · limit 0.0600 MG/LBack in compliance
  3. 2021-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0720 MG/L · limit 0.0600 MG/LBack in compliance
  4. 2021-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0670 MG/L · limit 0.0600 MG/LBack in compliance
  5. 2019-01-01Thiobencarb (Bolero)Monitoring, RegularBack in compliance
  6. 2019-01-01MolinateMonitoring, RegularBack in compliance
  7. 2019-01-01BentazonMonitoring, RegularBack in compliance
  8. 2019-01-01ChlordaneMonitoring, RegularBack in compliance
  9. 2019-01-01Ethylene DibromideMonitoring, RegularBack in compliance
  10. 2019-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
  11. 2019-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  12. 2019-01-01PentachlorophenolMonitoring, RegularBack in compliance
  13. 2019-01-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  14. 2019-01-01HexachlorobenzeneMonitoring, RegularBack in compliance
  15. 2019-01-012, 4, 5-TpMonitoring, RegularBack in compliance
  16. 2019-01-012, 4-DMonitoring, RegularBack in compliance
  17. 2019-01-01Heptachlor epoxideMonitoring, RegularBack in compliance
  18. 2019-01-01HeptachlorMonitoring, RegularBack in compliance
  19. 2019-01-012, 3, 7, 8-TcddMonitoring, RegularBack in compliance
  20. 2019-01-01LassoMonitoring, RegularBack in compliance
  21. 2019-01-01AtrazineMonitoring, RegularBack in compliance
  22. 2019-01-01CarbofuranMonitoring, RegularBack in compliance
  23. 2019-01-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  24. 2019-01-01DinosebMonitoring, RegularBack in compliance
  25. 2019-01-01PicloramMonitoring, RegularBack in compliance
Show the other 13 entries
  1. 2019-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  2. 2019-01-01SimazineMonitoring, RegularBack in compliance
  3. 2019-01-01OxamylMonitoring, RegularBack in compliance
  4. 2019-01-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  5. 2019-01-01GlyphosateMonitoring, RegularBack in compliance
  6. 2019-01-01EndothallMonitoring, RegularBack in compliance
  7. 2019-01-01DiquatMonitoring, RegularBack in compliance
  8. 2019-01-01DalaponMonitoring, RegularBack in compliance
  9. 2019-01-01ToxapheneMonitoring, RegularBack in compliance
  10. 2019-01-01MethoxychlorMonitoring, RegularBack in compliance
  11. 2019-01-01Bhc-GammaMonitoring, RegularBack in compliance
  12. 2019-01-01EndrinMonitoring, RegularBack in compliance
  13. 2018-02-01Revised Total Coliform RuleMONBack in compliance

System details

Population served915
Service connections299
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityLa Honda
EPA ZIP on file94020

Areas served

  • San Mateo County

Reading this record

Cuesta La Honda Guild Inc is a community water system that draws from surface water and serves about 915 people in La Honda, California. 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.