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Tap water quality report

Ridge Water Association

EPA monitoring tested this supplier for 61 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

61
contaminants tested
7
detected
615
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Spokane

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.

3
health-based violations
11
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-10-01 → 2000-10-31
MCL Health-based Archived 2000-10-01 → 2000-10-31
MCL Health-based Archived 2000-10-01 → 2000-10-31
Other Monitoring Resolved 2024-07-01
MR Monitoring Resolved 2022-01-01 → 2022-12-31
Other Monitoring Resolved 2021-07-01
MON Monitoring Resolved 2019-09-01 → 2019-09-30
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2016-01-01 → 2016-12-31
Other Monitoring Resolved 2015-07-01

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
Nitrate
2840 µg/L 28%
of the EPA limit 10000 µg/L
 10/12 SYR4 2012–2019
Lead
0.0055 mg/L 37%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2023
Arsenic
7.2 µg/L 72%
of the EPA limit 10 µg/L
 1/1 SYR4 2019
Barium
61.2 µg/L 3.1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Copper
2.4 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/1 SYR4 2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Nitrate-Nitrite
1770 µg/L 18%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
54 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Devin Billington

Frequently asked questions about Ridge Water Association

Is Ridge Water Association tap water safe to drink?

EPA monitoring detected 7 contaminants in Ridge Water Association'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 Ridge Water Association's water?

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

How many people does Ridge Water Association serve?

Ridge Water Association reports serving 615 people in Washington, per its EPA record.

Has Ridge Water Association had any water quality violations?

The EPA has 11 violations on file for Ridge Water Association, of which 3 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.