Tap WaterIndex

← Washington

Tap water quality report

Richardson Water Company

EPA monitoring tested this supplier for 73 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
7
detected
188
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Yakima

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
37
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2015-04-01 → 2015-04-30
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31
MR Monitoring Resolved 2014-01-01 → 2019-12-31

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 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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
Nitrate
1131 µg/L 11%
of the EPA limit 10000 µg/L
 8/34 SYR4 2012–2019
Arsenic
3.5 µg/L 35%
of the EPA limit 10 µg/L
 2/2 SYR4 2016
Fluoride
390 µg/L 9.8%
of the EPA limit 4000 µg/L
 2/2 SYR4 2016
Gross Alpha, Excl. Radon And U
2.4 pCi/L 16%
of the EPA limit 15 pCi/L
 2/2 SYR4 2015
Lead
2.5 µg/L 17%
of the EPA limit 15 µg/L
 2/2 SYR4 2016
Nitrate-Nitrite
650 µg/L 6.5%
of the EPA limit 10000 µg/L
 2/8 SYR4 2016–2019
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, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Bennett Osborne

Frequently asked questions about Richardson Water Company

Is Richardson Water Company tap water safe to drink?

EPA monitoring detected 7 contaminants in Richardson 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 Richardson Water Company's water?

EPA monitoring detected Lead, Nitrate, Arsenic, Fluoride, 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 Richardson Water Company serve?

Richardson Water Company reports serving 188 people in Washington, per its EPA record.

Has Richardson Water Company had any water quality violations?

The EPA has 37 violations on file for Richardson Water Company, 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.