keyword

national pollution discharge elimination system

Monthly search volume and cost-per-click data for "national pollution discharge elimination system" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=national+pollution+discharge+elimination+system&country=us" +--------------+------------------+ | volume | 590 | | cpc | $5.77 | | competition | 0 | | country | US | | updated | 2026-06-23 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
npdes	6,600	$6.79	16/20
npdes permit	3,600	$4.14	9/20
npdes permit #	3,600	$11.59	8/20
national pollutant discharge elimination system permit	3,600	$11.59	7/20
national pollutant discharge elimination system npdes	590	$11.8	11/20
npdes system	590	$11.8	9/20
national pollutant discharge elimination system	590	$5.77	7/20
what does npdes stand for	320	$0	8/20
npdes program	50	$0	9/20
what is the purpose of the npdes	20	$0	9/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=national+pollution+discharge+elimination+system&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt